Abstract:
There are provided a tape cartridge which can be changed into a compact shape for storage or transport, or makes a printing tape and a laminating tape replaceable, and at the same time facilitating the handling of them, a tape cartridge capable of holding an unrolled portion extending over a relative long distance in a proper attitude, a tape cutting device including the tape cartridge, and a tape printing apparatus including any of the above tape cartridges or having a structure making itself free from spoiling the print quality. A casing of a tape cartridge accommodating at least one roll of tape such that the at least one roll of tape can be unrolled therefrom comprises a hinge mechanism arranged at a longitudinally intermediate portion thereof, for allowing the tape cartridge to be folded. A tape-holding member protrudes from a casing, for holding an end of an unrolled portion of a roll of tape rolled out from the casing for enabling the tape to be rolled out therefrom, thereby ensuring mounting of the roll of tape in the cartridge compartment with the unrolled portion rolled out from the casing. An unrolled portion of a roll of laminating tape is laminated onto an unrolled portion of a roll of a printing tape. A tape-supporting frame rotatably supporting at least one of these rolls of tapes is removably mounted in a casing for removably accommodating these rolls of tapes.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     This invention relates to a tape cartridge removably mounted in a tape printing apparatus, a tape cartridge containing a printing tape and a laminating tape to be laminated on the printing tape, and a tape printing apparatus having the tape cartridge mounted therein, as well as a tape printing apparatus (printer) which carries out printing by an ink jet printing method. 
     2. Prior Art 
     Conventionally, a tape cartridge incorporating a printing tape and a laminating tape to be laminated on a printing surface of the printing tape was proposed by Japanese Utility Model Publication (Kokoku) No. 7-2203. The tape cartridge has a cartridge casing integrally formed therewith for containing the printing tape, the laminating tape, and an ink ribbon. 
     This type of tape cartridge suffers from a problem that if the tape cartridge is constructed such that it can contain tapes with an extremely large width, it needs a cartridge casing which is large in width, which inevitably increases the size of the tape cartridge itself. A large tape cartridge is bulky, so that it is not only difficult or troublesome to carry the tape cartridge, but also it takes much space for storing the same. 
     In the above-mentioned tape cartridge, the printing tape and the laminating tape are contained in the cartridge casing, as described above, and after printing is effected on the printing tape, the laminating tape is laminated on the printed portion of the printing tape, and then the laminated portion of the two tapes is sent out of the tape cartridge. 
     When the printing tape and the laminating tape are used up, the tape cartridge including the cartridge casing is discarded. This not only goes against the saving of resources but also pollutes the environment. This problem can be solved to some extent by providing a roll of printing tape and a roll of laminating which are not contained in a cartridge casing, for replacement of tapes. However, another problem arises that if lamination of the printing tape with the laminating tape is started without aligning leading portions of the two tapes one upon the other with accuracy, displacement between the two tapes increases according to an angle formed therebetween in the course of the lamination. Therefore, it is required to provide a printing tape and a laminating tape in a state in which the leading portions thereof are affixed to each other accurately without any displacement. 
     However, to provide the printing tape and laminating tape maintained in the above state, it is required to carry or transport the two tapes for replacement and mount the same in a cartridge casing without loosening the rolls thereof. Therefore, the carrying or transport and mounting of the tapes is expected to be troublesome. 
     Another tape cartridge of the above-mentioned kind was proposed e.g. by Japanese Laid Open Publication (Kokai) No. 3-166977. In the tape cartridge, a printing tape and a laminating tape laminated on an adhesive double coated tape are contained in a cartridge casing. The leading portions of the printing tape and the laminating tape are fed out of the casing in advance in a state affixed to each other, and the tape cartridge is mounted in a cartridge compartment of an apparatus body in this state. When the tape cartridge is mounted in the cartridge compartment, the laminated leading portion of the two tapes is brought to a cutter arranged in the apparatus body. 
     However, in the conventional tape cartridge, if the leading portion to be fed out of the cartridge casing is formed to have a small length, when a free end of the leading portion is erroneously brought into contact with anything during transport or storage, the leading portion can be pushed back into the cartridge casing, making tape feed impossible. On the other hand, if the leading portion is formed to have a large length, when the tape cartridge is being mounted in the apparatus body, the leading portion can be caught in component parts or the like in the apparatus body. In this case, the mounting itself is difficult, and the tapes can be mounted in the apparatus body with the leading portion folded. 
     A general type of printer (ink jet printer) which effects printing on paper by an ink jet printing method has paper feed rollers arranged therein at respective upstream and downstream locations in a direction of feeding of paper with respect to a print head. In this type of printer, at the start of paper feed, the paper fed by the feed roller on the upstream side is caught by the feed roller on the downstream side and further fed by the same. Accordingly, the upstream feed roller is rotated in synchronism with drive of the print head, and at the same time, the downstream feed roller is rotated in a slipping manner, whereby the paper is tensioned for printing. 
     However, there exist no types of a so-called tape printer (tape printing apparatus) which carry out printing on a tape by the ink jet printing method. 
     If the conventional ink jet printer is applied to a tape printing apparatus, it is assumed that a printed portion of a tape will be rubbed by a peripheral surface of the downstream feed roller when the roller performs slipping rotation, so that it would be impossible to prevent degradation of printing without using a special kind of tape which is excellent in ink-absorbing property. 
     Further, in a tape printing apparatus in which a printed portion of a printing tape is laminated with a laminating tape, it is assumed that displacement of the laminating tape with respect to the printing tape will occur when the downstream feed roller performs slipping rotation. 
     SUMMARY OF THE INVENTION 
     It is a first object of the invention to provide a tape cartridge which can be changed into a compact shape when it is transported or stored, and a tape printing device including the same. 
     It is second object of the invention to provide a tape cartridge which is capable of holding an unrolled portion extending over a relatively long distance in a proper attitude, and a tape cutting device including the tape cartridge. 
     It is a third object of the invention to provide a tape cartridge which makes a printing tape and a laminating tape replaceable, and at the same time facilitating the handing of them, including replacement of them, and a tape printing apparatus including the same. 
     It is a fourth object of the invention to provide a tape printing apparatus having a structure making itself free from spoiling the print quality. 
     To attain the first object, according to a first aspect of the invention, there is provided a tape cartridge including a casing accommodating at least one roll of tape such that the at least one roll of tape can be unrolled therefrom, 
     wherein the casing comprises a hinge mechanism arranged at a longitudinally intermediate portion thereof, for allowing the tape cartridge to be folded. 
     According to this tap cartridge, it is possible to fold a tape cartridge having a large length extending in one direction, into a compact shape which is suitable for storage and transport. 
     Preferably, the at least one roll of tape comprises a first roll of tape and a second roll of tape, the first roll of tape and the second roll of tape being unrolled, and sent out from the casing in a state positioned one upon another, the tape cartridge including a first tape-accommodating block for accommodating the first roll of tape, a second tape-accommodating block for accommodating the second roll of tape, and a connecting block for connecting the first tape-accommodating block and the second tape-accommodating block, wherein the hinge mechanism is incorporated in the connecting block, for permitting the first tape-accommodating and the second tape-accommodating block to be folded to each other. 
     According to this preferred embodiment, the first tape-accommodating block and the second tape-accommodating block are constructed to be capable of being folded via the hinge mechanism incorporated in the connecting block. Therefore, when the first tape-accommodating block and the second tape-accommodating block are folded, the length along the longitudinal axis along which the first tape-accommodating block and the second tape-accommodating block extend is made short. 
     Preferably, when the first tape-accommodating block and the second tape-accommodating block are unfolded, space is formed as an recessed portion between the first tape-accommodating block and the second tape-accommodating block, and the first tape-accommodating block and the second tape-accommodating block can be folded in a direction of reducing the space. 
     According to this preferred embodiment, when the first tape-folding block and the second tape-folding block are folded to each other, the whole shape of the tape cartridge can be changed into a rather smooth shape. 
     More preferably, the first tape-accommodating block and the second tape-accommodating block has portions formed to have respective shapes complementary to each other, for being brought into contact with each other when the first tape-accommodating block and the second tape-accommodating block are folded. 
     According to this preferred embodiment, when the first tape-folding block and the second tape-folding block are folded to each other, the space is filled thereby making compact the whole shape of the tape. 
     Preferably, the first roll of tape has an unrolled portion unrolled from the first tape-accommodating portion and extending over the connecting block toward the second tape-accommodating portion, and the hinge mechanism has an axis of pivotal motion of the first tape-accommodating block and the second tape-accommodating block, the axis of pivotal motion being located outward of the unrolled portion with respect to a direction of folding of the unrolled portion occurring when the first tape-accommodating block and the second tape-accommodating block are folded. 
     According to this preferred embodiment, as the first tape-accommodating block and the second tape-accommodating block are folded, the leading end of the unrolled portion of the first roll of tape is moved toward the second tape-accommodating block, which prevents the leading end from being disengaged e.g. from a guide provided on the second tape-accommodating block, for holding the leading end. 
     Preferably, aid connecting block has a first connecting portion located on a first tape-accommodating block side and having a first pair of side portions, and a second connecting portion located on a second tape-accommodating block side and having a second pair of side portions, the first connecting portion and the connecting portion are connected to each other via the hinge mechanism, and the hinge mechanism comprises a pair of pins protruding inwardly from one pair of the first pair of side portions and the second pair of side portions, and a pair of pin-receiving recess respectively formed in another pair of the first pair of side portions and the second pair of side portions, and engaged with the pair of pins for permitting pivotal motion of the pair of the pins. 
     According to this preferred embodiment, the pins of the hinge mechanism are not required to extend over the width of the connecting block. Therefore, the hinge mechanism can be simplified in construction and the assembling of the same can be facilitated. 
     Preferably, the connecting block has a first connecting portion located on a first tape-accommodating block side and having a first end, and a second connecting portion located on a second tape-accommodating block side and having a second end, the first connecting portion and the connecting portion are connected to each other at the first end and the second end via the hinge mechanism such that the fist connecting portion and the second connecting portion can be folded to each other, and one of the first end and the second end has a locating recess, and another of the first end and the second having has a locating projection for being fitted in the locating recess when the first tape-accommodating block and the second tape-connecting block are unfolded. 
     According to this preferred embodiment, when the first tape-accommodating block and the second tape-accommodating block are unfolded, i.e. in a state extended for use, the locating projection of the connecting block is fitted in the locating recess of the same, whereby the first tape-accommodating block and the second tape-accommodating block are accurately positioned when in use. This makes it possible to laminate the unrolled portion of the first roll of tape and the unrolled portion of the second roll of tape to each other. 
     Preferably, the first roll of tape is a roll of printing tape having a printing surface for being printed, and the second roll of tape is a roll of laminating tape whose unrolled portion is laminated to the printing surface of an unrolled portion of the roll of printing tape. 
     According to this preferred embodiment, when the tape cartridge is in a folded state, the first roll of tape and the second roll of tape can be made close to each other, and when it is in use (in a unfolded or extended state), the first roll of tape and the second roll of tape can be arranged remote from each other in a manner corresponding to the configuration of the printing apparatus. 
     To attain the first object, according to a second aspect of the invention, there is provided a tape printing apparatus comprising a tape cartridge removably mounted therein, the tape cartridge including a casing accommodating at least one roll of tape such that the at least one roll of tape can be unrolled therefrom, 
     wherein the casing comprises a hinge mechanism arranged at a longitudinally intermediate portion thereof, for allowing the tape cartridge to be folded. 
     According to this tape printing apparatus, the tape printing apparatus is capable of having the tape cartridge properly mounted therein by unfolding the tape cartridge, and having the same removed therefrom, allowing the same to be folded into a compact shape for storage. 
     To attain the second object, according to a third aspect of the invention, there is provided a tape cartridge for being mounted in a cartridge compartment of an apparatus using a roll of tape, comprising: 
     a casing for accommodating the roll of tape; and 
     a tape-holding member protruding from the casing, for holding an end of an unrolled portion of the roll of tape rolled out from the casing for permitting the roll of tape to be rolled out from the casing, thereby ensuring that the roll of tape is mounted in the cartridge compartment in a state in which the roll of tape accommodated within the casing has the unrolled portion rolled out from the casing. 
     According to this tape cartridge, the tape-holding member protruding from the casing holds the end of the unrolled portion of the roll of tape rolled out from the casing. Therefore, it is possible to hold the unrolled portion in a proper attitude and at the same time prevent the unrolled portion from being retracted into the casing, during transport and storage of the tape cartridge and further when the tape cartridge is mounted in the cartridge compartment. 
     Preferably, the tape-holding member has a pressing portion for pressing the end of the unrolled portion, and a receiving portion for receiving the end of the unrolled portion pressed by the pressing portion. 
     According to this preferred embodiment, the leading end of the unrolled portion of the tape can be immovably held without causing any inconvenience of unrolling of the tape, and can be prevented from being drawn back into the casing. 
     Preferably the tape-holding member is mounted in the casing in a state urged in a direction of projecting out of the casing, such that the tape holding-member can be protruded from the casing and retracted therein. 
     According to this preferred embodiment, the tape-holding member protruding from the casing is given resistance to a shock. 
     To attain the second object, according to a fourth aspect of the invention, there is provided a tape cutting device comprising: 
     a cartridge compartment; 
     a tape cartridge for being mounted in the cartridge compartment, 
     the tape cartridge having: 
     a casing for accommodating a roll of tape; and 
     a tape-holding member protruding from the casing, for holding an end of an unrolled portion of the roll of tape rolled out from the casing for permitting the roll of tape to be rolled out from the casing, thereby ensuring that the roll of tape is mounted in the cartridge compartment in a state in which the roll of tape accommodated within the casing has the unrolled portion rolled out from the casing, 
     the tape-holding member having a pressing portion for pressing the end of the unrolled portion, and a receiving portion for receiving the end of the unrolled portion pressed by the pressing portion, the tape-holding member being mounted in the casing in a state urged in a direction of projecting out of the casing, such that the tape holding-member can be protruded from the casing and retracted therein; and 
     a cutting device facing the cartridge compartment, for cutting off the unrolled portion, the cutting device operating along a cutting line, 
     wherein at least one of the pressing portion and the receiving portion has an outer end from which the unrolled portion extends out of the tape cartridge, and 
     wherein the cutting line is parallel with and positioned close to the outer end of the at least one of the pressing portion and the receiving portion of the tape-holding member of the tape cartridge mounted in the cartridge compartment. 
     According to this tape cutting device, the leading end of the unrolled portion of the roll held by the tape-holding member can be brought close to the cutting line of the cutting device. Therefore, the tape-holding member can be made use of as means for holding the tape when the tape is cut. This makes it possible to accurately cut the tape along the cutting line. 
     Preferably, the cutting device has a fixed blade, a movable blade performing a cutting operation on the fixed blade, a tape retainer for pressing the leading portion of the unrolled portion via the tape-holding member on the fixed blade, in a state of the tape cartridge being mounted in the cartridge compartment. 
     According to this preferred embodiment, when the movable blade is operated against the fixed blade, the leading end of the unrolled portion can be immovably pressed on the fixed blade by the tape retainer via the tape-holding member. This makes it possible to cut off the tape with higher accuracy. 
     Preferably, the movable blade is a rotary cutter blade, and at the same time the cutting device further includes reciprocation means for causing the movable blade to reciprocated along the cutting line, and the tape retainer is caused to reciprocate ahead of the rotary cutter blade by the reciprocation means in a state pressing on the tape-holding member. 
     According to this preferred embodiment, by the use of the rotary cutter blade as the movable blade, even a wide tape can be accurately cut along the cutting line. Further, a cutting portion of the tape can be sequentially held by the tape retainer. This makes the cutting operation free from the problem of balance of pressure to be applied to the cutting portion, compared with a case where the whole width of the tape is retained by the tape retainer. 
     Preferably, the tape cutting device further includes a printing mechanism for printing on the unrolled portion of the roll of tape. 
     According to this preferred embodiment, the unrolled portion of the roll of tape is stably held by the tape-holding member. This makes it possible to perform printing with a constant print quality. 
     To attain the third object, according to a fifth aspect of the invention, there is provided a tape cartridge comprising: 
     a roll of printing tape; 
     a roll of laminating tape for having an unrolled portion thereof laminated onto an unrolled portion of the printing tape; 
     a casing for removably accommodating the roll of printing tape and the roll of laminating tape; and 
     a tape-supporting frame rotatably supporting at least one of the roll of printing tape and the roll of laminating tape, the tape-supporting frame being removably mounted in the casing. 
     According to this tape cartridge, the roll of printing tape and the roll of laminating tape are removably accommodated within the casing. Therefore, when the tapes are used up, or damaged, they can be replaced by new ones. Further, at least one of the roll of printing tape and the roll of laminating tape is supported by the tape-supporting frame within the casing, these tapes can be removed together with tape-supporting frame. In doing this, since the at least one of the roll of printing tape and the roll of laminating tape is rotatably supported by the tape-supporting frame, the tape(s) supported is/are prevented from becoming loosened and it is easy to handle them, e.g. when they are mounted in the tape cartridge. 
     Preferably, the tape-supporting frame is in the form of a case. 
     According to this preferred embodiment, when the roll of printing tape and the roll of laminating tape are transported or stored, they can be protected by the tape-supporting frame. 
     Preferably, the tape-supporting frame has a tape type-discriminating portion for enabling a type of at least one of the roll of printing tape and the roll of laminating tape to be detected therefrom. 
     According to this preferred embodiment, it is not required to provide the tape type-discriminating portion on the tape itself (e.g. on the tape core), and the construction for tape type detection can be simplified. Further, the provision of the tape type-discriminating portion prevents the erroneous replacement of tapes. 
     Preferably, one of the casing and the tape-supporting frame is formed with a protruding portion for preventing erroneous mounting of the tape-supporting frame on the casing, and another of the casing and the tape-supporting frame is formed with a recess for having the protruding portion fitted therein. 
     According to this construction, the erroneous replacement of tapes can be prevented mechanically by the tape-supporting frame. 
     More preferably, the tape-supporting frame accommodates the roll of printing tape alone, and has a mounting portion for having the roll of laminating tape removably mounted thereon when the tape-supporting frame is not mounted on the casing. 
     According to this preferred embodiment, a roll of laminate tape available for replacement or removed from the tape cartridge can be mounted on the mounting portion of the tape-supporting frame, whereby the laminating tape can be prevented from rolling, thereby facilitating the handling of the same. 
     To attain the third object, according to a six aspect of the invention, there is provided a tape cartridge, comprising: 
     a roll of printing tape; and 
     a casing for removably accommodating the roll of printing tape, 
     the casing having: 
     a contacting member for contacting a peripheral surface of the roll of printing tape, and rolling on the peripheral surface as the roll of tape is unrolled, 
     a support member for supporting the contacting member such that the contacting member can be moved in a direction of radius of the roll of printing tape, and 
     an urging member for urging the contacting member toward the roll of printing tape via the support member. 
     According to this tape cartridge, the roll of printing tape can be pressed on by the contacting member, which prevents the printing tape from rotating by vibration, becoming loose within the casing, and being drawn back into the casing. 
     Preferably, the contacting member is a roller supported by the support member in a freely rotatable manner. 
     According to this preferred embodiment, the contacting member rolls on the printing tape rolled out as the printing proceeds. This makes it possible to prevent the printing surface of the printing tape from being damaged by the contacting member. 
     To attain the third object, according to a seventh aspect of the invention, there is provided a tape cartridge comprising: 
     a roll of printing tape; 
     a roll of laminating tape for having an unrolled portion thereof laminated onto an unrolled portion of the printing tape; and 
     a casing for replaceably accommodating the roll of printing tape and the roll of laminating tape, 
     the roll of printing tape and the roll of laminating tape having unrolled portions respectively having leading end portions, non-adhesive portions following the leading end portions and prevented from being affixed to each other, and lamination-starting portions following the non-adhesive portions, the roll of printing tape and the roll of laminating tape being supplied for replacement, with the leading end portions being provisionally laminated, and at same time, placed into a state initialized for use only when the roll of printing tape and the roll of laminating tape are mounted in the casing, and then the lamination-stating portions being affixed to be laminated, by pulling the leading portions over a predetermined length, 
     wherein the case has an outer surface, and a guide formed on the outer surface in a straight line for guiding the unrolled portions of the roll of printing tape and the roll of laminating tape being rolled out. 
     According to this tape cartridge, the unrolled portions of the printing tape and the laminating tape for replacement have respective leading end portions for being provisionally affixed, non-adhesive portions, and lamination-starting portions, in a sequence from respective leading edges in the mentioned order. By pulling the provisionally laminated leading end portions in a straight line to cause lamination of the lamination-starting portions, it is possible to accurately position these tapes one upon the other and laminate them. By pulling the tapes in a manner guided by the guide provided on the casing, the tapes can be pulled in a straight line, and so even if this operation is entrusted to the user, these tapes can be accurately laminated. 
     To attain the third object, according to an eighth aspect of the invention, there is provided a tape cartridge comprising: 
     a roll of printing tape; 
     a roll of laminating tape for having an unrolled portion thereof laminated onto an unrolled portion of the printing tape; and 
     a casing for accommodating the roll of printing tape and the roll of laminating tape, 
     the laminating tape having: 
     a body of tape; 
     a tape core on which the body of tape is wound around to form a roll, the roll of the body of tape having opposite ends; and 
     a pair of flanges arranged on the tape core for holding the opposite ends of the roll of the body of tape in a sandwiching manner. 
     Some laminating tapes can be unevenly coated with an adhesive due to manufacturing process. In such a case, the shape of the roll of laminating tape can be axially changed from a cylindrical shape to an oblique cone shape. According to the preferred embodiment, the roll of laminating tape is sandwiched by the pair of flanges, which prevents axial deformation of the shape of the roll of laminating from the cylindrical shape to the oblique cone shape. 
     To attain the third object, according to a ninth aspect of the invention, there is provided a tape printing apparatus including a tape cartridge for being removably mounted therein, the tape cartridge comprising: 
     a roll of printing tape; 
     a roll of laminating tape for having an unrolled portion thereof laminated onto an unrolled portion of the printing tape; 
     a casing for removably accommodating the roll of printing tape and the roll of laminating tape; and 
     a tape-supporting frame rotatably supporting at least one of the roll of printing tape and the roll of laminating tape, the tape-supporting frame being removably mounted in the casing. 
     To attain the third object, according to a tenth aspect of the invention, there is provided a tape printing apparatus including a tape cartridge for being removably mounted therein, the tape cartridge comprising: 
     a roll of printing tape; and 
     a casing for removably accommodating the roll of printing tape, 
     the casing having: 
     a contacting member for contacting a peripheral surface of the roll of printing tape, and rolling on the peripheral surface as the roll of tape is unrolled, 
     a support member for supporting the contacting member such that the contacting member can be moved in a direction of radius of the roll of printing tape, and 
     an urging member for urging the contacting member toward the roll of printing tape via the support member. 
     To attain the third object, according to an eleventh aspect of the invention, there is provided a tape printing apparatus including a tape cartridge for being removably mounted therein, the tape cartridge comprising: 
     a roll of printing tape; 
     a roll of laminating tape for having an unrolled portion thereof laminated onto an unrolled portion of the printing tape; and 
     a casing for replaceably accommodating the roll of printing tape and the roll of laminating tape, 
     the roll of printing tape and the roll of laminating tape having unrolled portions respectively having leading end portions, non-adhesive portions following the leading end portions and prevented from being affixed to each other, and lamination-starting portions following the non-adhesive portions, the roll of printing tape and the roll of laminating tape being supplied for replacement, with the leading end portions being provisionally laminated, and at same time, placed into a state initialized for use only when the roll of printing tape and the roll of laminating tape are mounted in the casing, and then the lamination-stating portions being affixed to be laminated, by pulling the leading portions over a predetermined length, 
     wherein the case has an outer surface, and a guide formed on the outer surface in a straight line for guiding the unrolled portions of the roll of printing tape and the roll of laminating tape being rolled out. 
     To attain the third object, according to a twelfth aspect of the invention, there is provided a tape printing apparatus including a tape cartridge for being removably mounted therein, the tape cartridge comprising: 
     a roll of printing tape; 
     a roll of laminating tape for having an unrolled portion thereof laminated onto an unrolled portion of the printing tape; and 
     a casing for accommodating the roll of printing tape and the roll of laminating tape, 
     the laminating tape having: 
     a body of tape; 
     a tape core on which the body of tape is wound around to form a roll, the roll of the body of tape having opposite ends; and 
     a pair of flanges arranged on the tape core for holding the opposite ends of the roll of the body of tape in a sandwiching manner. 
     According to these tape printing apparatuses of the eighth to twelfth aspects of the invention, since the roll of printing tape and the roll of laminating tape accommodated within the tape cartridge are replaceable, the resource saving and the environmental safety can be achieved by the tape cartridge, and at the same time, running cost can be reduced. 
     To attain the fourth object, according to a fourteenth aspect of the invention, there is provided a tape printing apparatus comprising: 
     a printing block for carrying out printing on a printing tape by an ink jet printing method; 
     a feed roller arranged at a location downstream of the printing block in a direction of feeding of the printing tape, for feeding the printing tape in synchronism with printing operation of the printing block; and 
     a tensioning device arranged at a location upstream of the printing block in the direction of feeding of the printing tape, for applying tension to the printing tape. 
     According to this tape printing apparatus, the feed roller feeds the printing tape in synchronism with printing operation of the printing block, and at the same time the tensioning applies tension to the printing tape being fed. That is, the printing tape being advanced in a strained state is printed in a desired manner. The feed roller which feeds the printing tape in synchronism with printing operation of the printing block is arranged at a location upstream of the printing block. Therefore, the feed roller does not undergo slipping rotation, and hence the peripheral surface of the feed roller does not rub on the printing surface. 
     To attain the fourth object, according to a fourteenth aspect of the invention, there is provided a tape printing apparatus for simultaneously advancing a printing tape and a laminating tape, for continuously laminating the laminating tape onto a printed portion of the printing tape, the tape printing apparatus comprising: 
     a printing block for printing on the printing tape by an ink jet printing method; 
     a laminating roller arranged at a location downstream of the printing block in a direction of feeding of the printing tape, for advancing the printing tape and the laminating tape while applying pressure onto the printing tape and the laminating tape placed one upon another, the laminating roller advancing the printing tape and the laminating tape in synchronism with printing operation of the printing block; and 
     a tensioning device arranged at a location upstream of the printing block with the direction of feeding of the printing tape, for applying tension to the printing tape. 
     According to this tape printing apparatus, the laminating roller advances the printing tape and the laminating tape while applying pressure onto the printing tape and the laminating tape, in synchronism with printing operation of the printing block. At the same time, the tensioning device applies tension to the printing tape being fed, so that the printing block carries out printing on the printing tape being advanced in a strained state. The laminating roller, which advances the printing tape and the laminating tape in synchronism with printing operation of the printing block, is arranged at a location downstream of the printing block in a direction of feeding of the tape. Therefore, the laminating roller does not undergo slipping rotation, and hence the peripheral surface of the laminating roller does not rub on the printing surface. 
     Preferably, the tape printing apparatus includes a tape cartridge for accommodating the printing tape and the laminating tape, and an apparatus body for having the tape cartridge removably mounted therein, the laminating roller having a driving roller and a pressure roller arranged in a manner sandwiching the printing tape and the laminating tape placed one upon another, the pressure roller being incorporated in the tape cartridge. 
     According to this preferred embodiment, the pressure roller of the laminating roller is incorporated in the tape cartridge. Therefore, the axial length of the pressure roller can be made adjusted to the width of the laminating tape. That is, if the pressure roller is arranged on the body of the apparatus, it is required to adapt the pressure roller to a laminating tape having the maximum width out of various tapes having different widths, so that it becomes difficult to uniformly apply pressure on a narrow laminating tape. In this respect, according to this preferred embodiment, the pressure roller having a width adjusted to the width of the laminating roller is incorporated in the laminating roller, so that the apparatus is free from the above inconvenience. 
     Preferably, the printing tape has a printing surface and a non-printing surface, and the tensioning device has a printing surface-braking member for being brought into contact with the printing surface of the printing tape, and a non-printing surface-braking member for being brought into contact with the non-printing surface of the printing tape, the printing surface-braking member and the non-printing surface-braking member being arranged in a manner sandwiching the printing tape, the printing surface-braking member having a free roller which is freely rotatable and in rolling contact with the printing surface of the printing tape. 
     According to this preferred embodiment, out of the printing surface-braking member and the non-printing surface-braking member arranged in a manner sandwiching the printing tape, the non-printing surface-braking member performs substantial braking of the printing tape, whereas the printing surface-braking member is in rolling contact with the printing surface of the printing tape. This prevents the printing tape being advanced from being rubbed by the printing surface-braking member, and hence from being damaged by the same. Therefore, the defective printing caused by damage of the printing surface can be effectively prevented. 
     More preferably, the printing surface-braking member has an urging member for urging the free roller toward the non-printing surface-braking member. 
     According to this preferred embodiment, the uniform braking force can be applied to the printing tape. 
     Further preferably, the free roller and the urging member are incorporated in the tape cartridge, the tape printing apparatus including an apparatus body for having the tape cartridge removably mounted therein, wherein the free roller and the urging member being incorporated in the tape cartridge. 
     According to this preferred embodiment, the axial length of the free roller can be adjusted to the width of the printing tape, and the braking force can be applied to the printing tape in a manner adapted to the width of the printing tape. This makes it possible to always apply a constant and suitable braking force to any of printing tapes having different widths. 
     Still more preferably, the tape cartridge has a tape-receiving portion for receiving the printing tape urged by the urging member via the free roller when the tape cartridge is not mounted in the apparatus body. 
     According to this preferred embodiment, when the tape cartridge is removed from the apparatus body, the free roller holds the printing tape against the tape-receiving portion, thereby preventing roll out of the printing tape. This prevents the printing tape from rotating by vibration, becoming loose within the casing, and being drawn back into the casing. 
    
    
     The above and other objects, features, and advantages of the invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. 
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a perspective view of an appearance of a tape printing apparatus according to an embodiment of the invention; 
     FIG. 2 is a cross-sectional view of the FIG. 1 tape printing apparatus; 
     FIG. 3 is a perspective view of a body of the tape printing apparatus in a state in which an apparatus casing is removed; 
     FIG. 4 is another perspective view of the body of the tape printing apparatus in a state in which the apparatus casing is removed; 
     FIG. 5 is a front view of a cutting device of the tape printing apparatus and component parts associated with the cutting device; 
     FIG. 6 is an enlarged side view of the cutting device and component parts associated therewith; 
     FIG. 7 is an enlarged side view which is useful in explaining operation of the cutting device and the component parts associated therewith; 
     FIG. 8 is a sectional view of a tape cartridge according to the embodiment; 
     FIG. 9 is a sectional view of the FIG. 8 tape cartridge in a state in which main and auxiliary casing lids thereof are opened; 
     FIG. 10 is a sectional view of the tape cartridge in a folded state; 
     FIG. 11 is a perspective view of the tape cartridge, as viewed from above, in a state in which the main and auxiliary casing lids are removed; 
     FIG. 12 is a perspective view showing a set of roll of printing tape and an uncovered roll of laminating tape, which is supplied to a user; 
     FIG. 13 is a perspective view of the tape cartridge, as viewed diagonally from above, in a state in which the main casing lid and the tape cartridge are removed; 
     FIG. 14 is a perspective view of the main casing lid as viewed from an inner side thereof; 
     FIG. 15 is an exploded perspective view of the tape cartridge disassembled at a hinge mechanism thereof; 
     FIG. 16 is a perspective view of the tape cartridge, as viewed from above, which is useful in explaining the hinge mechanism and component parts associated therewith; 
     FIG. 17 is a perspective view of the tape cartridge, as viewed from below, which is useful in explaining the hinge mechanism and component parts associated therewith; 
     FIG. 18 is a perspective view of the folded tape cartridge, as viewed from below, which is useful in explaining the hinge mechanism and component parts associated therewith; 
     FIG. 19 is a side view of an ejection mechanism; 
     FIG. 20 is a plan view of the ejection mechanism; 
     FIGS. 21A and 21B are side views which are useful in explaining operation of the ejection mechanism; 
     FIG. 22 is a plan view of the ejection mechanism, which is useful in explaining a lock mechanism thereof; 
     FIG. 23A is a side sectional view of the ejection mechanism; 
     FIG. 23B is a side sectional view of the ejection mechanism and the tape cartridge mounted thereon; 
     FIG. 24 is a plan view showing an ejection plate and a mounting guide plate of the ejection mechanism; 
     FIG. 25 is a view which is useful in explaining an operation of the ejection mechanism; 
     FIG. 26 is a view which is useful in explaining another operation of the ejection mechanism; 
     FIG. 27 is a view which is useful in explaining another operation of the ejection mechanism; 
     FIG. 28 is a view which is useful in explaining another operation of the ejection mechanism; 
     FIG. 29 is a plan view showing a state in which the tape cartridge has been inserted to an innermost position on the ejection plate via the mounting guide plate; 
     FIGS. 30A and 30B are side views which are useful in explaining a replacement-detecting switch and operation thereof; and 
     FIG. 31 is a block diagram of a control system for use in tensioning feed of the printing tape. 
    
    
     DETAILED DESCRIPTION 
     The invention will now be described in detail with reference to the drawings showing a tape printing apparatus according to an embodiment thereof. The tape printing apparatus is an ink jet type that carries out color printing of desired characters and the like entered via a keyboard thereof on a printing tape by an ink jet printing method and cutting off the printed portion of the printing tape to thereby form a label. Further, this tape printing apparatus carries not only a printing tape but also a laminating tape thereon, whereby it is also possible to laminate the laminating tape to the printed portion of the printing tape and cut off the printing tape laminated with the laminating tape to thereby form a laminated label. The printing tape and the laminating tape are provided in a state contained in a tape cartridge. 
     FIG. 1 shows the tape printing apparatus in perspective, and FIG. 2 shows the same in cross section. As shown in the figures, the tape printing apparatus  1  is comprised of an apparatus body  2 , a keyboard  3  mounted on a front portion of the apparatus body  2 , a tape cartridge  4  containing a roll of printing tape T 1  and a roll of laminating tape T 2 , and an ink cartridge  5  containing four colors of ink. The tape cartridge  4  and the ink cartridge  5  are removably mounted in the apparatus body  2 . 
     On the top of the keyboard  3  are arranged various kinds of keys  3   a  which form means of inputting data into the tape printing apparatus  1 . In this embodiment, the keyboard  3  is attached to the apparatus body  2  such that the keyboard  3  can be selectively brought to an upright position or to a horizontal position. When the apparatus  1  is used for printing, the keyboard  3  is brought to the horizontal position, whereas when the same is carried by the user, the keyboard  3  is brought to the upright or folded position. 
     The apparatus body  2  has an apparatus casing  6  upper part of which is formed by a lid  7  which can be opened and closed for inserting and removing (i.e. mounting and unmounting) the tape cartridge  4  and the ink cartridge  5 . In a right-side front portion of the lid  7  is formed a small window  9  which corresponds in position to a liquid crystal display block  8  incorporated in the apparatus body  2  when the lid  7  is closed. In a side wall of the apparatus casing  6  is formed a tape exit  10  in the form of a slit through which the laminated printing tape T 1  is sent out of the apparatus. 
     Inside the apparatus casing  6 , there are arranged a tape feeder  11  for feeding the printing tape T 1  and the laminating tape T 2  and at the same time attaching the laminating tape T 2  to the printing tape T 1 , a printing device  12  for applying color printing on the printing tape T 1  by an ink jet printing method, a cutting device  13  for cutting off a portion of the printing tape T 1  laminated with the laminating tape T 2 , and a circuit board  14  for controlling operations of these devices and carrying out information processing. Further, the apparatus casing  6  also contains an ejection mechanism  15  for securing the tape cartridge  4  in a position where the above devices can gain access thereto and releasing the same for removal (see FIG.  2 ). 
     The tape feeder  11 , the printing device  12  and the cutting device  13  are controlled by a control circuit incorporated in the circuit board  14  such that they operate in a manner interlocked with each other. More specifically, after the lid  7  is opened, the tape cartridge  4  is set in the position where the devices can gain access thereto, by the use of the ejection mechanism  15 . Then, after the lid  7  is closed, desired characters and the like are entered via the keyboard  3 , and a print command is issued. When the tape feeder  11  is driven in response to the print command, the printing tape T 1  is unwound from the tape cartridge  4  and printing based on key entries made via the keyboard  3  is effected on the printing tape T 1  by the printing device  12 . The printing device  12  is arranged such that it faces an intermediate portion of the tape cartridge  4  from above, for accessing the unwound portion of the printing tape T 1 . 
     During the printing operation, the printing tape T 1  is fed forward, and at the same time the laminating tape T 2  is unwound from the tape cartridge  4  to be continuously affixed to the printed portion of the printing tape T 1 . The printed portion of the printing tape T 1  laminated with the laminating tape T 2  is sent out by the tape feeder  11  via the tape exit  10 . When a trailing edge of the printed portion with a trailing marginal area allowed therefor reaches the cutting position, the tape feeder  11  is stopped to allow the cutting device  13  to cut off the laminated printing tape T. Thus, a laminated label with desired characters and the like printed thereon is formed. 
     The tape cartridge  4  is of a type containing a printing tape T 1  and a laminating tape T 2  in a cartridge casing  16 , in which a main holding block  4   a  for holding the printing tape T 1  and an auxiliary holding block  4   b  for holding the laminating tape T 2  are connected by a connecting block  4   c  at an intermediate location. When the tape cartridge  4  is not mounted in the apparatus body  2 , it can be made compact by folding the auxiliary holding block  4   b  to the main holding block  4   a  as described in detail hereinafter. It should be noted that in addition to the above tape cartridge  4  containing the printing tape T 1  and the laminating tape T 2 , a tape cartridge, not shown, of a type which is identical to the tape cartridge  4  in appearance, internal construction, and foldability, but different in that it contains the printing tape T 1  alone can be provided for the tape printing apparatus  1  according to the embodiment. 
     As shown in FIGS. 2,  3 , and  4 , the printing device  12  includes a carriage guide shaft  31  having opposite lateral (left and right) ends (one and end face is shown in FIG. 2) thereof supported on a frame  17 , a carriage guide bar  32  arranged in parallel with the carriage guide shaft  31 , a carriage  33  slidably attached to the carriage guide shaft  31  and the carriage guide bar  32 , a timing belt  34  which is driven in a forward or reverse direction to move the carriage  33  in the direction of the width of the printing tape T 1  in a reciprocating manner, and a carriage motor  35  for driving the timing belt  34  in a forward or reverse direction. On the carriage  33  are integrally mounted a print head  36  at a lower portion thereof, and a cartridge holder  37  at an upper portion of the same, for holding the ink cartridge  5  therein. That is, the carriage  33 , the print head  36 , and the cartridge holder  37  form a print head unit  38 . 
     It should be noted that differently from the above description of the whole tape printing apparatus made with reference to FIG. 1, the following description of the tape cartridge  4  and its component parts is made based on the assumption that a direction along a longer side of the tape cartridge in its unfolded state is referred to as a front-rear direction, with the auxiliary holding block-side end as a front side and the main holding block-side end as a rear side. Similarly, it is assumed that a direction orthogonal to the above-defined front-rear direction is referred to as a right-left direction, and hence the arrangement of right and left components should be construed based on the right-left direction thus defined. 
     The print head  36  is mounted on the carriage  33  in a manner facing downward, and the ink cartridge  5  is also held in the cartridge holder  37  in a manner facing downward. When the ink cartridge  5  is mounted in the cartridge holder  37 , ink reservoirs  5   a  containing the inks of different colors, respectively, communicate with the print head  36 , whereby ink is allowed to flow from the four ink reservoirs  5   a  to the print head  36 . The ink reservoirs  5   a  are filled with yellow ink, cyan ink, magenta ink and black ink, respectively. Further, arranged on the carriage  33  is a photo interruptor  39 , described in detail hereinafter, for sensing a type of the tape cartridge  4 . 
     The tape feeder  11  has a printing tape-side tensioning mechanism la and a laminating tape-side tape feed mechanism  11   b  arranged on opposite sides of the printing device  12  in the direction of feeding of the printing tape T 1 . The tape feed mechanism  11   b  includes laminating roller means  41  comprised of a feed driven roller  42  and a feed drive roller  43  arranged at respective upper and lower positions in a manner rotatably supported on the frame  17 , a feed motor  44  for rotating the feed drive roller  43 , and a gear train  45  for transmitting torque from the feed motor  44  to the feed drive roller  43 . The feed drive roller  43  is arranged in the apparatus body  2 , while the feed driven roller  42  is arranged in the tape cartridge  4  (which will be described in detail hereinafter). 
     When the tape cartridge  5  is mounted in the body  2 , the feed driven roller  42  presses the printing tape T 1  and the laminating tape T 2  in a manner sandwiching the same between the feed drive roller  43  and the feed driven roller  42  itself. The printing tape T 1  and the laminating tape T 2  are advanced in this state as the feed motor  44  rotates. More specifically, the printing tape T 1  and the laminating tape T 2  are fed forward with the printed portion of the former being laminated with the latter. It should be noted that the feed of the printing tape T 1  and the reciprocation of the print head  36  correspond to the relationship between the main scanning direction and the sub scanning direction in printing technology. Therefore, the feed motor  44  and the carriage motor  35  operate in a manner interlocked with each other. 
     The tensioning mechanism  11   a  is comprised of a printing surface-side braking member  51  including a free roller  52 , and a non-printing surface-side braking member  53 . The two members  51  and  53  are arranged at respective upper and lower positions. The non-printing surface-side braking member  53  formed by a stationary roller brakes movement of the printing tape T 1  which is being fed forward, in a manner sandwiching the same between the stationary roller and the free roller  52 . The non-printing surface-side braking member  53  is arranged in the apparatus body  2 , while the printing surface-side braking member  51  is arranged in the tape cartridge  4  (which will be described in detail hereinafter). It should be noted that the non-printing surface-side braking member  53  is not necessarily required to be formed by a stationary roller, but it may be formed by any element having a surface which is arcuate in cross section, for contact with the printing tape T 1 . 
     When the tape cartridge  4  is mounted in the apparatus body  2 , the printing surface-side braking member (free roller  52 )  51  presses the printing tape T 1  against the non-printing surface-side braking member  53  in a sandwiching manner. When the tape feed mechanism  11   b  is driven to advance the printing tape T 1  in this state, the free roller  52  is brought into rolling contact with the top surface (printing surface) of the tape T 1 , while the non-printing surface-side braking member  53  is brought into sliding contact with the underside surface (non-printing surface) of the same. As a result, the printing tape T 1  is tensioned, and the print head  36  is brought into contact therewith for printing operation. 
     As described above, the printing tape T 1  is advanced together with the laminating tape T 2  by the laminating roller means  41  arranged at a location forward (downstream in the direction of feeding of the printing tape T 1 ) of the print head  36  while being tensioned by the tensioning mechanism  11   a  arranged at a location rearward (upstream in the direction of feeding of the printing tape T 1 ) of the same. This construction makes it possible to prevent slipping rotation of the laminating roller means  41  over the tapes T 1  and T 2  and resultant failure of adhesion of the laminating tape T 2 . Further, when a tape cartridge of the type containing no laminating tape T 2  is mounted in the apparatus  1 , it is possible to prevent the printed portion of the tape T 1  from being scratched. 
     As far as the tensioning mechanism  11   a  is concerned, since the free roller  52  is brought into rotating contact with the top surface (printing surface) of the printing tape T 1 , the printing surface cannot be scratched at all even when the forward movement of the tape T 1  is braked, which prevents degradation of printing due to damage to the printing surface. It should be noted that the laminating roller means (feed drive roller  43 )  41  and the tensioning mechanism (non-printing surface-side braking member  53 )  11   a  are arranged on an identical horizontal plane such that the printing tape T 1  can be fed horizontally between them. 
     As shown in FIGS. 2 and 5, the cutting device  13  is mounted on an underside surface of a forward end portion of an ejection plate  161 , referred to hereinafter. The cutting device is comprised of a cutter frame  61 , and a self-propelled cutter  62  arranged on the cutter frame  61  such that it can reciprocate along a cutting line  63  (see FIGS. 6 and 7) on the cutter frame  61 . Further, the cutter  62  is comprised of a circular cutter blade (rotary cutter blade)  64  which rotates for cutting operation, a stationary blade  65  arranged in a manner opposed to the cutter blade  64  which is a movable blade, a cutter motor  66  for driving the cutter blade  64  for rotation as well as for serving as a drive source for the cutter  62  to drive itself, a tape retainer  67  for pressing the laminated printing tape T against the stationary blade  65  for the cutting operation of the cutter blade  64 , and a common base  68  for supporting the component parts  64 ,  65 ,  66 , and  67 . 
     As described in detail hereinafter, the tape cartridge  4  has a tape-holding member  121  projecting downward from a bottom of the auxiliary holding block  4   b  in a state urged downward. The laminated tape T is guided by the tape-holding member  121  to be brought to the cutting device  13 . A front end of the tape-holding member  121  and the cutting line  63  are arranged in parallel and close to each other, to allow the laminated printing tape T to be cut orthogonally to a direction of extension of the tape T at a location immediately forward of the tape-holding member  121 . 
     As shown in FIGS. 6 and 7, the tape retainer  67  is pivotally mounted on the common base  68  in a state pivotally urged in one direction. As the cutter  62  travels (reciprocates), the tape retainer  67  is brought into engagement with the tape-holding member  121  and presses the same from below in sliding contact therewith. The tape-holding member  121  pressed by the tape retainer  67  presses the laminated printing tape T it holds against the underside surface of the stationary blade  65  to secure the same in a sandwiched manner between the stationary blade  65  and the tape-holding member  121  itself. In this case, the tape retainer  67  is brought to the laminated tape T prior to the cutter blade  64 , so that the cutter blade  64  can cut off the laminated printing tape (printed portion) T secured in a sandwiched manner between the stationary blade  65  and the tape-holding member  121 , while traveling. 
     After completion of printing operation, when the tape feed mechanism  11   b  sends the printing tape T 1  by a predetermined number of steps (feed increments) corresponding to a predetermined distance, it is stopped, and at the same time, cutting operation is started. The cutting operation may be instructed manually through operation of a key of the keyboard  3 . In the cutting operation, the cutter motor  66  operates such that the cutter  62  travels or moves along the cutting line  63 . This movement enables the tape retainer  67  to retain or hold the laminated printing tape T continuously and at the same time the cutter blade  64  to cut off the same. When the cutting operation is completed, the laminated printing tape cut off by the cutter blade  64  is sent out of the apparatus by its own weight via the tape exit  10 . On the other hand, the cutter  62  moves back along the cutting line  63  to its home or stand by position. 
     According to the embodiment, since the laminated printing tape T is cut off by the cutter blade  64  while being retained or held by the tape retainer  67 , it is possible to cut the tape T in a stable state and accurately at the right angle as well as to give a smooth finish cut to the cut end of the same. 
     Now, detailed description will be made of the printing tape T 1  and the laminating tape T 2  accessed by the above-mentioned devices, the tape cartridge  4  for holding these tapes T 1  and T 2 , and further the ejection mechanism  15  for properly mounting the tape cartridge  4  in the apparatus body  2 . 
     The printing tape (printing tape body) T 1  is comprised of a substrate tape, an adhesive layer coated on the back of the substrate tape, and a peel-off paper tape affixed to the adhesive layer. The substrate tape is formed of a material that readily absorbs ink, such as paper, paper having a coating, or a film having a coating. The adhesive layer is provided for affixing a printed portion of the printing tape to an object material, such as a file or the like, as a label, while the peel-off paper tape is provided for preventing dust or the like from adhering to the adhesive layer. The laminating tape (laminating tape body) T 2  is comprised of a substrate tape and an adhesive layer coated on the back of the substrate tape. The substrate tape is formed of a transparent film having a thickness of approximately 16 to 18 μm. 
     The printing tape T 1  and the laminating tape T 2  to be laminated onto the printing tape T 1  are configured to have an approximately identical width and affixed to each other in a state in which the sides of the two tapes T 1  and T 2  placed one upon the other are aligned. More specifically, the laminating tape T 2  has a width slightly smaller (by approximately 0.3 mm) than the printing tape T 1  such that slight lateral displacement of the laminating tape T 2  can be accommodated when it is affixed to the printing tape T 1 . That is, the laminating tape T 2  has a smaller width than the printing tape T 1  by 0.15 mm from both edges of lateral sides of the printing tape T 1  so as to accommodate errors in manufacturing the tapes to thereby prevent the laminating tape T 2  from extending beyond the printing tape T 1  in the direction of the width thereof. 
     Further, a whole length of the printing tape T 1  mounted on the tape cartridge  4  is made slightly shorter than that of the laminating tape T 2  such that the printing tape T 1  is used up before using up the laminating tape T 2 , which prevents the printing operation from being carried out on the printing tape T 1  when there is not sufficient laminating tape to completely cover the printing tape. It is preferable to inform the user that the remaining length of the printing tape T 1  is small immediately before the printing tape T 1  is used up. For example, a through hole is formed (or a black filled portion may be formed) in the rear end of the printing tape T 1  to enable an optical sensor or the like to trigger an alarm. 
     Tape cartridges are provided that contain various (approximately eight to ten) kinds of printing tape T 1  and laminating tape T 2  with various tape widths of from 4.5 mm to 96 mm. More specifically, the tape cartridges  4  are classified into three types “S”, “M”, and “L” which are different in width, and out of the eight to ten kinds of printing tape T 1  and laminating tape T 2 , several kinds with smaller widths are contained in the “S” type of tape cartridge, several kinds with medium widths in the “M” type, and several kinds with larger widths in the “L” type. It should be noted that there are provided still other printing tapes T 1  different in material or having background colors other than white. Therefore, it is possible to use at least several tens of kinds of printing tape T 1  and laminating tape T 2  including ones to be adopted in the future. 
     Next, the tape cartridge  4  will be described by taking the above “M” type of tape cartridge having the medium size as an example. In the tape cartridge  4 , as shown in FIGS. 8,  9  and  10 , the main holding block  4   a  holding the printing tape T 1  and the auxiliary holding block  4   b  holding the laminating tape T 2  are connected by the connecting block  4   c  at an intermediate location. Above the connecting block  4   c , there is formed an upper space  18  having a generally concave shape in cross section, in which the print head unit  38  of the printing device is positioned. 
     A cartridge casing  16  housing these blocks is formed by a casing body  71 , a main casing lid  72  on the main holding block side, and an auxiliary casing lid  73  on the auxiliary holding block side. The cartridge casing  16  is configured such that the user can open the main casing lid  72  and the auxiliary casing lid  73  to replace the printing tape T 1  and the laminating tape T 2  with new ones, respectively. The printing tape T 1  and the laminating tape T 2  are provided as a set in a state in which the printing tape T 1  in the form of a roll is rotatably contained in a sub casing  74 , and the laminating tape T 2  also in the form of a roll is uncovered, with leading portions Ta of the respective tapes T 1  and T 2  provisionally affixed to each other (see FIG.  12 ), such that the user can mount them in the cartridge casing  16 . 
     Further, the cartridge casing  16  is constructed such that the auxiliary holding block  4   b  can be folded to the main holding block  4   a  via a hinge mechanism  75  arranged in the connecting block  4   c  (see FIGS.  10  and  18 ). Thus, the tape cartridge  4  can be stored or transported in a folded state, except when it is mounted in the apparatus body  2  (which will be described in detail hereinafter). 
     The printing tape T 1  in the form of a roll is stored in the main holding block  4   a  in a state contained in the sub casing  74 , while the laminating tape T 2  in the form of a roll is stored directly in the auxiliary holding block  4   b . The roll of printing tape T 1  is comprised of a tape core T 1   b  and a printing tape body T 1   a  wound into a roll around the tape core T 1   b . The printing tape T 1  is rotatably supported in the sub casing  74  by the tape core T 1   b.    
     The sub casing  74  is a bottomless case having a complementary shape to the inner shape of the main holding block  4   a . As shown in FIGS. 11 and 12, the sub casing  74  has left-side and right-side intermediate portions thereof each formed with a tape support member  81 . The pair of left and right tape support members  81  and  81  are arranged at opposite locations for rotatably supporting the printing tape T 1 . Each of the tape support members  81  is formed to have a small thickness such that it is resilient and has a shaft projection  82  formed at a vertically intermediate portion thereof in a manner projecting inward. The printing tape T 1  is fitted between the tape support members  81  and  81 , with the shaft projections  82  and  82  fitted in opposite ends of the tape core T 1   b . Thus, the printing tape T 1  is supported in the sub casing  74  in a state held between the tape support members  81  and  81 . 
     On opposite sides of a upper rear portion of the sub casing  74 , there are formed a pair of left and right mounting pieces  83  and  83  each having an arcuate projection  84  projecting inward. The uncovered roll of laminating tape T 2  is mounted between the pair of mounting pieces  83  and  83  in a manner engaged with the arcuate projections  84  and  84  (as described in detail hereinafter). Further, as best shown in FIGS. 8,  9 , and  10 , on a upper front portion of the sub casing  74 , there is mounted a sensing element  85  for sensing the type of a printing tape T 1  and that of a laminating tape T 2 . The sensing element  85  is in the form of a rectangular plate and printed with a plurality of vertical lines similar to a bar code. During the reciprocating motion of the print head unit  38  described above, the photo interruptor  39  arranged thereon is brought to the sensing element  85  and reads the plurality of vertical lines to discriminate the type of the printing tape T 1  and that of the laminating tape T 2 . 
     At a lower front portion of the sub casing  74 , there is formed a feed opening  86  for sending the printing tape T 1  out of the sub casing  74 . Further, a setting member  87  projects forward from a lower edge of the feed opening  86 . The feed opening  86  has an approximately identical width to that of the printing tape T 1  and guides the tape T 1  to be fed from the main holding block  4   a . The setting member  87  is formed with a pair of left and right locating holes  88  and  88  in which a pair of locating pins  93  and  93  of the casing body  71 , referred to hereinafter, are fitted, respectively. Further, between the pair of locating holes  88  and  88 , there are formed improper mounting-inhibiting holes  89  in each of which an improper mounting-inhibiting pin  94  of the casing body  71  is fitted (see FIGS.  11  and  12 ). The number and diameter of the improper mounting-inhibiting holes  89  vary with the type (mainly width) of the printing tape T 1 , and the number and diameter of the improper mounting-inhibiting pins  94  also vary accordingly. 
     Although the cartridge casings  16  are largely classified into the three sizes “S”, “M”, and “L” as described above, in most cases, there is provided a cartridge casing of a particular size corresponding to the widths of a printing tape T 1  and a laminating tape T 2  to be used. Therefore, if the improper mounting-inhibiting pins  94  of the cartridge casing  16  does not match the improper mounting-inhibiting holes  89  of the sub casing  74 , it is impossible to mount the sub casing  74  in the cartridge casing  16 , which prevents the user from erroneously mounting a printing tape T 1  with an improper width in the cartridge casing  16 . 
     As shown in FIG. 13, the main holding block  4   a  of the body casing  71  is formed with a seating portion  91  on which the sub casing  74  is seated when it is mounted in the cartridge casing  16 . The seating portion  91  has three seating nails  92  erected thereon at three different locations, respectively. Two of the seating nails  92  are arranged at respective rear left and right corners of the seating portion  91 , for engaging respectively with a pair of left and right shallow recesses  90  and  90  formed in respective lower rear portions of opposite outer side walls of the sub casing  74  (see FIG.  12 ). The other of the seating nails  92  is erected at a center of a front portion of the seating portion  91 , for engaging with the setting member  87  of the sub casing  74  from inside (see FIG.  11 ). The three seating nails  92  prevent the sub casing  74  from being lifted from the seating portion  91 . The locating pins  93  and the improper mounting-inhibiting pins  94  are erected at a location on the seating portion  91  corresponding to the setting member  87  of the sub casing  74  when the sub casing  74  is seated thereon. 
     Arranged on a central portion of the seating portion  91  are a contact roller  96  for rotating contact with the printing tape T 1  rotatably supported in the sub casing  74 , a roller arm  97  supporting the contact roller  96  in a rotatable manner, and an urging spring  98  for urging the contact roller  96  toward the printing tape T 1  via the roller arm  97 . The roller arm  97  is pivotally attached to a pair of left and right rib pieces  99  and  99  erected on the seating portion  91 . The urging spring  98  is interposed between the roller arm  97  and a bottom plate of the seating portion  91 , for urging the roller arm  97  upward. A path of pivotal motion of the contact roller  96  caused by the roller arm  97  is on a line radially passing through an axis of the roll of printing tape T 1 , such that the contact roller  96  can constantly radially press on the roll of printing tape T 1 , which is being radially reduced by consumption of the printing tape T 1 . 
     This construction makes it possible not only to prevent the roll of printing tape T 1  from loosening within the sub casing  74  but also to prevent the leading portion Ta of the printing tape T 1  sent out of the cartridge casing  16  from being drawn back into the same. It should be noted that if the roll of printing tape T 1  loosens, the printing surface of the tape T 1  can be brought into sliding contact with an inner wall of the sub casing  74  and become damaged. Further, if the leading portion Ta of the printing tape T 1  is drawn back into the cartridge casing  16 , the printing tape T 1  can be separated from the laminating tape T 2  at the leading portion Ta thereof. 
     FIG. 14 shows the main casing lid  72  appearing in FIG. 8, as viewed from an inner side thereof. The main casing lid  72  has a front portion to which the printing surface-side braking member  51  and a guide roller  101  are attached. The guide roller  101  is rotatably supported by a pair of left and right first rib pieces  102  and  102  projecting inward from an inner wall of the main casing lid  72 . The guide roller  101  rotates in contact with the printing tape T 1  during feeding of the same, to thereby guide the tape T 1  so as to keep the same from sliding contact with the an inner wall of the sub casing  74  and an inner wall of the main casing lid  72  (see FIG.  8 ), thereby preventing the printing surface of the tape T 1  from being damaged. 
     The printing surface-side braking member  51  is comprised of the free roller  52 , a roller holder for rotatably supporting the free roller  52 , and a brake spring  105  (see FIG. 8) for urging the free roller  52  downward. The roller holder  104  has opposite ends thereof engaged with respective slots formed in a pair of left and right second rib pieces  106  and  106  projecting inward from the inner wall of the main casing lid  72 . The roller holder  104  can move vertically along the slots. The brake spring  105  is interposed between the inner wall of the main casing lid  72  and the roller holder  104 , for urging the free roller  52  toward the non-printing surface-side braking member  53  arranged in the apparatus body  2  (see FIG.  2 ). 
     The body casing  71  is formed with an access opening  107  through which the non-printing surface-side braking member  53  faces the free roller  52  (see FIG.  11 ). When the tape cartridge  4  is mounted in the apparatus body  2 , the non-printing surface-side braking member  53  of the apparatus body is fitted through the access opening  107  and brought into contact with the free roller  52  in a state sandwiching the printing tape T 1  between the free roller  52  and the non-printing surface-side braking member  53  itself. On the other hand, when the tape cartridge  4  is removed from the apparatus body  2 , the free roller  52  and the roller holder  104  are projected downward to the maximum extent by the urging force of the brake spring  105 , to press the printing tape T 1  against an edge of the access opening  107 . This also makes it possible to prevent the leading portion Ta of the printing tape T 1  from being drawn back into the cartridge casing  4 . Reference numeral  108  in FIGS. 8 and 11 designates a sensing window through which the sensing element  85  is inserted, and reference numeral  109  a pair of left and right stopper pieces for engagement with the pair of tape support members  81  and  81 . The stopper pieces  109  are each formed with a slit for engagement with an upper end of a corresponding one of the tape support members  81 , for preventing the tape support member  81  from being warped outward excessively. 
     As shown in FIGS. 8 and 11, the laminating tape T 2  is formed of a tape core T 2   b , a laminating tape body T 2   a  in the form of a roll wound around the core T 2   b , and a pair of flange portions T 2   c  and T 2   c  arranged on opposite ends of the tape core T 2   b  in a manner axially sandwiching the laminating tape body T 2   a  wound around the tape core T 2   b . Some laminating tapes (laminating tape bodies T 2   a ) T 2  are unevenly coated with an adhesive due to manufacturing process. In such a case, the shape of the roll of laminating tape (laminating tape body T 2   a ) T 2  can be axially changed or deformed from a cylindrical shape to an oblique cone shape due to an ambient temperature or the like. According to the present embodiment, since the laminating tape body T 2   a  is sandwiched by the pair of flange portions T 2   c  and T 2   c , the above-mentioned deformation can be prevented. 
     Each of the flange portions T 2   c  has a side face thereof formed therein with a plurality of arcuate slits T 2   d  arranged at predetermined circumferential intervals about the tape core T 2   b . When an uncovered roll of laminating tape T 2  is fitted between the pair of mounting pieces  83  and  83 , the arcuate projection  84  of each of the mounting pieces  83  is brought into engagement with any one of the arcuate slits T 2   d , whereby the laminating tape T 2  is removably attached to the sub casing  4  (see FIG.  12 ). 
     The roll of laminating tape T 2  configured as above is rotatably supported by a pair of left and right tape support members  111  and  111  each formed in the auxiliary holding block  4   b  in a erected manner. Similarly to the tape support members  81  for holding the printing tape T 1 , each of the tape support members  111  is formed to have a small thickness such that it is resilient and has a shaft projection  112  formed at a vertically intermediate location thereof in a manner projecting inward. The roll of laminating tape T 2  is fitted between the tape support members  111  and  111 , with the shaft projections  112  and  112  fitted in the respective opposite ends of the tape core T 2   b . Thus, the roll of laminating tape T 2  is supported in the auxiliary holding block  4   b  in a state held between the tape support members  111  and  111 . Further, similarly to the main casing lid  72 , the auxiliary casing lid  73  has a pair of left and right stopper pieces  113  and  113  projecting downward from an inner top wall thereof for preventing the pair of tape support members  111  and  111  from being warped outward excessively (see FIG.  9 ). 
     The feed driven roller  42  is arranged in the auxiliary holding block  4   b  at a location close to the connecting block of the body casing  71 . Further, at a location upstream of the feed driven roller  42 , there are erected a pair of left and right guide walls  115  and  115  for guiding the laminating tape T 2  such that the tape T 2  is rolled out properly (see FIG.  11 ). The feed driven roller  42  which also serves as a tape-laminating roller has a shaft  42   a  thereof with which a pair of left and right tape-laminating arms  116  and  116  are engaged for urging the shaft  42   a  downward. Each of the tape-laminating arms  116  arranged at a location outward of a corresponding one of the tape support members  111  in a manner extending toward a front portion of the body casing  71  is pivotally attached to the body casing  71  at an intermediate location closer to the feed driven roller  42 . Between a front end of each of the tape-laminating arms  116  and a corresponding one of spring-retaining portions  117  erected in opposite front corners of the body casing  71 , there is interposed a tape-laminating spring  118 . The feed driven roller  42  is urged downward by the tape-laminating springs  118  via the tape-laminating arms  116  to be brought into contact with the feed drive roller  43  for sandwiching the printing tape T 1  and the laminating tape T 2  between the feed drive roller  43  and the feed driven roller  42  itself (see FIG.  2 ). 
     Further, as shown in FIG. 9, the auxiliary holding block  4   b  has a guide opening  119  open to the connecting block  4   c  of the body casing  71 , for guiding the printing tape T 1  therethrough. The guide opening  119  is formed on a path extending from the feed opening  86 . Similarly to the feed opening  86 , the guide opening  119  has a width which is approximately equal to that of the printing tape T 1 . The printing tape T 1  is fed from the main holding block  4   a  into the auxiliary holding block  4   b  while being guided by the two openings  86  and  119  open to respective opposite ends of the connecting block  4   c.    
     On a bottom of the auxiliary holding block  4   b  of the body casing  71 , there is mounted a tape-holding member  121  at a location forward of the feed driven roller  42  in a manner projecting downward from the bottom of the auxiliary holding block  4   b . As shown in FIGS. 6 and 7, the tape-holding member  121  is comprised of a tape catch  122  which forms a main part thereof, a tape-retaining plate  123  arranged along the tape catch  122 , an internal spring  124  urging the tape catch  122  downward. The bottom of the auxiliary holding block  4   b  of the body casing  71  is formed with a mounting recess  125  in which a base portion  122   a  of the tape catch  122  is mounted in a state urged downward by the internal spring  124 , such that it can slide vertically and cannot fall off. 
     The tape catch  122  is a unitary member formed of the base portion  122   a , a downward-projecting portion  122   b  extending downward from the base portion  122   a , and a horizontal portion  122   c  extending forward from the downward-projecting portion  122   b . In a boundary between the downward-projecting portion  122   b  and the horizontal portion  122   c , there is formed a slit  126  having a width which is slightly wider than that of the laminated printing tape T. The leading portion Ta of the laminated printing tape T is guided onto the horizontal portion  122   c  through the slit  126  and retained on an upper surface of the horizontal portion  122   c . The tape-retaining plate  123  which is generally mirrored L-shaped in cross section extends downward along the rear surface of the downward-projecting portion  122   b , passes through the slit  126 , and extends along the upper surface of the horizontal portion  122   c . That is, a forward end portion of the leading portion Ta of the laminated printing tape T is retained in a manner sandwiched between the horizontal portion  122   c  of the tape catch  122  and the tape-retaining plate  123 . 
     The tape cartridge  4  is supplied to the user in a folded state, as described hereinafter. However, regardless of whether the tape cartridge  4  is in a folded state or in an unfolded state, the leading portion Ta of the laminated printing tape T is retained by the tape-holding member  121  with its forward end slightly projected from an end of the tape catch  122 , which prevents the leading portion Ta of the laminated printing tape T from falling off the tape-holding member  121 . Further, since the leading portion Ta is held in a proper position by the tape-holding member  121 , it is prevented from getting caught in members arranged in the apparatus body  2  when the tape cartridge  4  is inserted into the apparatus body  2 . 
     As shown in FIG. 6, when the tape cartridge is mounted in the apparatus body  2 , the tape-holding member  121  is brought to a position close to the cutting line  63  of the cutter  62  and in parallel with the same. Then, when the cutter  62  starts cutting operation as described hereinbefore, the tape retainer  67  of the cutter  62  presses on the tape-holding member  121  upward. This pressure causes the tape-holding member  121  to move upward against the urging force of the internal spring  124 . As a result, the tape-holding member  121  holding the leading portion Ta in a state sandwiched between the tape catch  122  and the tape-retaining plate  123  is sandwiched between the stationary blade  65  and the tape retainer  67 . 
     The printing tape T 1  and the laminating tape T 2  each wound in the form of a roll are rolled out by the feed driven roller  42  and the feed drive roller  43  (the laminating roller means  41 ) as described above. In this process, the printing tape T 1  is guided to the laminating roller means  41  by the feed opening  86  formed in the sub casing  74  and the guide opening  119  formed in the body casing  71 , while the laminating tape T 2  is guided to the same by the pair of left and right guide walls  115  and  115 . 
     Next, the folding structure of the tape cartridge  4  will be described. As shown in FIG. 15, the tape cartridge  4  is divided at the connecting block  4   c  into the main holding block  4   a  and the auxiliary holding block  4   b . The two blocks  4   a  and  4   b  can be folded against each other via the hinge mechanism  75  formed by a main holding block-side connecting block  131   a  and an auxiliary holding block-side connecting block  131   b . When the tape cartridge  4  is unfolded as shown in FIG. 8, the upper space  18  having a generally concave shape in cross section is formed above the connecting block  4   c  and receives the print head unit  38  therein such that it faces the connecting block  4   c . On the other hand, when the tape cartridge  4  is folded as shown in FIG. 10, the auxiliary holding block  4   b  occupies the upper space  18 , whereby the tape cartridge  4  forms a generally rectangular shape. That is, an outer front surface of the main holding block  4   a  and an outer rear surface of the auxiliary holding block  4   b  which define the upper space  18  therebetween are formed to have shapes generally complementary to each other. 
     As shown in FIG. 15, the main holding block-side connecting block  131   a  and the auxiliary holding block-side connecting block  131   b  are connected in a manner such that a rear end portion of the connecting block  131   b  is sandwiched between a pair of left and right connecting pieces  132  and  132  projecting from a front end portion of the connecting block  131   a . The hinge mechanism  75  is formed by a pair of pin projections  133  and  133  projecting inward from respective inner surfaces of the pair of connecting pieces  132  and  132  and a pair of left and right pin-receiving holes  134  and  134  formed in respective left-side and right-side outer surfaces of the rear end portion of the auxiliary holding block-side connecting block  131   b  in association with the respective holes  134  and  134 . The auxiliary holding block  4   b  is folded against the main holding block  4   a  about the pair of pin projections  133  and  133 . It should be noted that in assembling the tape cartridge  4 , the auxiliary holding block  4   b  can easily be attached to the main holding block  4   a  simply by bending the pair of connecting pieces  132  and  132  slightly outward and then fitting the rear end portion of the auxiliary holding block  4   b  between the connecting pieces  132  and  132 . 
     As described hereinbefore, formed at the boundary between the auxiliary holding block  4   b  and the auxiliary holding block-side connecting block  131   b  is the guide opening  119  for sending the laminated printing tape T out of the casing, and the leading portion Ta of the laminated printing tape T sent out through the guide opening  119  extends to the tape-holding member  121  arranged at a location downstream of the guide opening  119 . The pin projections (folding pivot)  133  are arranged below the printing tape (leading portion Ta) T 1 , so that when the tape cartridge  4  is folded, the forward end of the leading portion Ta is bent and slides such that it projects forward from the tape-holding member  121  (see FIGS.  8  and  10 ). Therefore, the forward end of the leading portion Ta is prevented from falling off the tape-holding member  121 . 
     Projecting inward from the vicinity of each of the pin projections  133  of the connecting pieces  132  are an opening-limiting projection  135  and a click projection  136 . Further, a pair of left and right spring nails  137  each extend forward from the front end of the main holding block-side connecting block  131   a  to the vicinity of a corresponding one of the click projections  136 . The auxiliary holding block-side connecting block  131   b  has a pair of left and right engaging blocks  138  formed on the rear end thereof, for proper engagement with the opening-limiting projections  135 , the click projections  136 , and the spring nails  137 . More specifically, when the main holding block  4   a  and the auxiliary holding block  4   b  are in their unfolded state as shown in FIG. 16, the engaging blocks  138  are brought into abutment with the respective opening-limiting projections  135  from below, and the spring nails  137  are brought into abutment with the respective engaging blocks  138  from below, whereby the auxiliary holding block  4   b  is inhibited from being folded toward the main holding block  4   a . Thus, the two holding blocks  4   a  and  4   b  are held in their unfolded positions. 
     From this state, when the auxiliary holding block  4   b  is folded toward the main holding block  4   a , each of the engaging blocks  138  bends a corresponding one of the spring nails  137  and overcomes the same (see FIGS.  17  and  18 ). Further, each of the engaging blocks  138  has an outer side face thereof formed with a projecting portion  138   a  having a resilient property, and the projecting portions  138   a  each press itself against a corresponding one of the click projections  136  and overcomes the same. Then, when the auxiliary holding block  4   b  is completely folded against the main holding block  4   a , the rear end face of the former is brought into abutment with the front end face of the latter, and the projecting portions  138   a  are inhibited from moving by the respective click projections  136  after having overcome the same, whereby the two holding blocks  4   a  and  4   b  are held in their folded state. 
     Further, as shown in FIGS. 15,  17 , and  18 , the main holding block-side connecting block  131   a  has a positioning protrusion  140  protruding from a center of the front end thereof, while the auxiliary holding block-side connecting block  131   b  has a locating recess  141  formed at a center of the rear end thereof, in which the positioning protrusion  140  is fitted. When the tape cartridge  4  is unfolded, the positioning protrusion  140  is fitted in the locating recess  141  for proper mutual positioning of the main holding block  4   a  and the auxiliary holding block  4   b  in a left-right or lateral direction, whereby the printing tape T 1  and the laminating tape T 2  are also properly positioned in the direction of width. Thus, the printing tape T 1  is accurately laminated with the laminating tape T 2  without any displacement. 
     At opposite locations adjacent to the positioning protrusion  140  are formed a pair of ink collecting windows  142  (see FIG.  17 ). Each of the ink collecting windows  142  is square-shaped and arranged at a position from which a corresponding one of the lateral sides of the printing tape T 1  being fed is exposed to the outside. Further, in the apparatus body  2  under each ink collecting window  142 , there is arranged a waste ink absorber, not shown, for absorbing uselessly discharged ink. According to the tape printing apparatus  1 , it is possible to print a background color in addition to characters, such as letters and the like. When the background color is printed, a printing operation (ejection of ink) is started from (and completed at) a position outward of the lateral edge of the printing tape T 1 , and hence ink for outside the lateral edge of the printing tape T 1  is ejected toward each ink collecting window  108  and passes therethrough to be absorbed by the waste ink absorber. 
     As described above, the tape cartridge  4  has a foldable structure, so that it can be transported or stored in the folded state. Therefore, even if the tape cartridge  4  is large in size, it cannot take much space when transported or stored. Further, the tape cartridge  4  constructed as above cannot be easily damaged even when it receives some external force while being transported. It should be noted that reference numerals  144  and  144  appearing in FIG. 17 designate a pair of left and right guide grooves formed in an underside surface of the body casing  71 , reference numerals  145  and  145  a pair of left and right nail-receiving recesses, and reference numeral  147  a slot, and further, numeral  146  in FIG. 8 designates a nail-receiving recess (each described in detail hereinafter). 
     As described hereinbefore, in replacing the printing tape T 1  and the laminating tape T 2  with respective new ones, it is possible to mount a roll of printing tape T 1  in the tape cartridge  4  in a state contained in a sub casing  74  and a roll of laminating tape T 2  in an uncovered state. In this case, since it is required to supply the tapes T 1  and T 2  to the user as a set in a state in which the forward end of the leading portion Ta of the printing tape T 1  is laminated with the laminating tape T 2 , the uncovered roll of laminating tape T 2  is attached to the sub casing  74  containing the printing tape T 1 , as shown in FIG. 12, and then the tapes T 1  and T 2  in this state are placed in a package and provided. In mounting the tapes T 1  and T 2  in the tape cartridge  4 , the user detaches the laminating tape T 2  from the sub casing  74 , and then places the sub casing  74  containing the printing tape T 1  in the main holding block  4   a , and the laminating tape T 2  in the auxiliary holding block  4   b . Further, the laminated leading portion Ta of the two tapes T 1  and T 2  is inserted into the tape-holding member (slit  126 )  121  of the body casing  71  via the guide opening  119  of the same, and then the main casing lid  72  and the auxiliary casing lid  73  are closed (see FIG.  9 ). 
     For accurate lamination or alignment between the printing tape T 1  and the laminating tape T 2 , each leading portion Ta has a portion (formed of a film, which is different from the material of the printing tape T 1 , in this embodiment) which cannot be laminated with the laminating tape T 2 . More specifically, the leading portion Ta includes a provisional lamination portion S 1 , a lamination-inhibiting portion S 2 , and a main lamination- starting portion S 3 , which are arranged in the mentioned order from the leading edge of the leading portion Ta. The tape cartridge  4  is supplied in a state in which only the provisional lamination portions S 1  are laminated. Therefore, after mounting the printing tape T 1  and the laminating tape T 2  in the tape cartridge  4 , the user pinches the provisional lamination portions S 1 , draws the leading portions Ta straight (at a right angle with respect to the axes of the rolls of tapes T 1  and T 2  until the main lamination-starting portions S 3  pass over the feed driven roller  42 , thereby carrying out lamination of the main lamination-starting portion S 3 . The replacement of printing tapes T 1  and laminating tapes T 2  is thus completed. 
     In the present embodiment, as shown in FIG. 17, the auxiliary holding block  4   b  has a lamination guide groove  149  formed at a front lower edge thereof to have a width approximately equal to that of the laminated printing tape T. The lamination guide groove  149  is formed by chamfering a portion of the front lower edge such that the portion has an arcuate cross section. The user draws the leading portion Ta forward along the lamination guide groove  149  while guiding the same by opposite ends of the guide groove  149 , for lamination of the main lamination-starting portion S 3 . Thus, the printing tape T 1  is accurately laminated with the laminating tape T 2  at the main lamination-starting portion S 3  without any lateral or angular displacement. 
     The tape cartridge  4  constructed as above is set to a predetermined printing position in the apparatus body  2  by the ejection mechanism  15 . When the tape cartridge  4  is set to the printing position, the feed driven roller  42  of the auxiliary holding block  4   b  catches the printing tape T 1  and the laminating tape T 2  to roll on the feed drive roller  43 , while the printing surface-side braking member  51  of the main holding block  4   a  catches the printing tape T 1  to roll on the non-printing surface-side braking member  53 . The tape-holding member  121  faces the cutting device  13  in a state retaining the laminated printing tape T, and the print head unit  38  is brought to a position immediately above the connecting block  4   c  for reciprocating motion (see FIG.  2 ). 
     As shown in FIGS. 2,  3 , and  4 , the ejection mechanism  15  is arranged in a cartridge compartment  20  defined in the apparatus body  2 . The ejection mechanism  15  includes an ejection plate  161  for holding the mounted tape cartridge  4 , a mounting guide plate  162  attached to a rear end of the ejection plate  161 , and an ejection plate-moving device  163  for moving the ejection plate  161  and the mounting guide plate  162 . The ejection plate  161  is moved by the ejection plate-moving device  163  in a manner tiltable with respect to the cartridge compartment  20  between the horizontal printing position where the devices can access the tape cartridge  4  in the apparatus body  2  and a tilted position where the ejection plate is in a tilted state with its rear end lifted upward. The mounting guide plate  162  can pivotally move with respect to the ejection plate  161  in a manner interlocked with the same between a receiving position at which the mounting guide plate  162  receives the tape cartridge  4  in a state tilted such that the mounting guide plate  162  extends outward from the apparatus casing  6  and a non-receiving position at which it is erected within the apparatus casing  6 . When the ejection plate  161  moves to the tilted position, and the mounting guide plate  162  to the receiving position, top surfaces of the two plates  61  and  62  become flush with each other. 
     When the ejection plate-moving device  163  is operated in a state in which the lid  7  of the apparatus body  2  is opened, the ejection plate  161  is moved to the tilted position with its rear end lifted upward, and at the same time, the mounting guide plate  162  falls or pivots outward to the receiving position for receiving the tape cartridge  4 . In this state, the tape cartridge  4  is slidingly guided along the mounting guide plate  162  and set on the ejection plate  161 . Then, when the ejection plate-moving device  163  is operated in reverse, the ejection plate  161  returns to the printing position, while the mounting guide plate  162  returns to the state erected at the non-receiving position, whereby the tape cartridge  4  is completely mounted in the apparatus body  2 . Then, the lid  7  is closed to place the tape printing apparatus  1  in a printing wait state. 
     As shown in FIGS. 4,  19 , and  20 , the ejection plate-moving device  163  includes one of side plates  165 , referred to hereinafter, of the ejection plate  161 , an ejection lever  167  having a lower end thereof pivotally attached to a holder frame  166  extending from the frame  17 , and a cam mechanism  168  interposed between the side plate  165  and the ejection lever  167 . The ejection lever  167  is comprised of a lever body  169  and an ejection knob  170  attached to an upper end of the lever body  169 . The lever body  169  has an upper portion thereof formed with a lock-receiving hole  172  for engagement with and disengagement from a lock mechanism  171 , referred to hereinafter, and an intermediate portion thereof formed with a cam projection  173  projecting toward the side plate  165 . The ejection lever  167  can be operated for pivotal motion performed between a forward-tilted position and a rearward-tilted position in a state guided by the holder frame  166 . 
     The side plate  165  is formed with a cam slot  175  for engagement with the cam projection  173 . The cam slot  175  has a generally S shape formed by a horizontal position-holding portion  175   a  for holding the ejection plate  161  in a horizontal position, an tilted position-holding portion  175   b  for holding the ejection plate  161  in the tilted position, and a plate-tilting portion  175   c  extending between the horizontal position-holding portion  175   a  and the tilted position-holding portion  175   b , for tilting the ejection plate  161 . That is, the cam mechanism  168  includes the cam projection  173  and the cam slot  175 . 
     As shown in FIG. 21A, when the ejection lever  167  is in the rearward-tilted position, the cam projection  173  is engaged with the horizontal position-holding portion  175   a  of the cam slot  175 , and the ejection plate is in the printing position. From this state, when the ejection lever  167  is pivoted to the forward-tilted position, the cam projection  173  is moved from the horizontal position-holding portion  175   a  through the plate-tilting portion  175   c  to the tilted position-holding portion  175   b , whereby the ejection plate  161  is tilted from the printing position to the tilted position (see FIG.  21 B). In this state, the cam projection  173  is engaged with the tilted position-holding portion  175   b , and the ejection plate  161  is held in the tilted position with its rear end lifted upward. More specifically, when the user pushes the ejection lever forward, the ejection plate  161  is lifted with its rear end upward, whereby it is possible to mount the tape cartridge  4 . From this state, when the ejection lever  167  is pulled rearward, the rear end of the ejection plate  161  is lowered, whereby the tape cartridge  4  is placed in the cartridge compartment  20 , and mounting of another tape cartridge  4  is inhibited. 
     In this tape printing apparatus  1 , the print head unit  38  moves from its home position to perform reciprocating motion immediately above the connecting block  4   c  of the mounted tape cartridge  4  for printing operation. When the print head unit  38  is at its home position, it is laterally displaced from the tape cartridge  4 , whereas at most positions other than the home position, the print head unit  38  is positioned immediately above the connecting block  4   c . Therefore, if the ejection lever  167  is operated accidentally when the print head unit  38  is at a position other than the home position, to tilt the tape cartridge  4 , there may occur interference between the tape cartridge  4  and the print head unit  38 . To solve this problem, according to the present embodiment, there is provided the lock mechanism  171 . When the print head unit  38  is moved to a position other than the home position, the lock mechanism  171  is brought into engagement with the lock-receiving hole  172  of the ejection lever  167  to thereby inhibit the pivotal operation of the ejection lever  167 . 
     As shown in FIGS. 4,  19 , and  20 , the lock mechanism  171  has a linkage including a first lock arm  178  and a second lock arm  179  each pivotally attached to a lock frame  177  adjacent to a holder frame  174 . The first lock arm  178  has a longitudinally intermediate portion thereof pivotally attached to the rock frame  177 , one end portion thereof formed therein with a lock nail  178   a  for engagement with or disengagement from the lock-receiving hole  172 , and another end portion thereof formed with a slide portion  178   b  with which the second lock arm  179  is slidably engaged. Similarly to the first lock arm  178 , the second lock arm  179  has a longitudinally intermediate portion thereof pivotally attached to the rock frame  177 . One end portion of the second lock arm  179  has a slide pin  179   a  extending therefrom for engagement with the slide portion  178   b , and another end portion of the same is formed with an engaging piece portion  179   b  for engagement with or disengagement from a protrusion  38   a  of the print head unit  38  which performs reciprocating motion. Further, the lock mechanism  171  has a spring, not shown, for pivotally urging the first lock arm  178  in a direction for engagement of the lock nail  178   a  with the lock-receiving hole  172 . 
     As shown in FIG. 22, when the print head unit  38  is at its home position, the engaging piece portion  179   b  of the second lock arm  179  is held in contact with the protrusion  38   a  of the print head unit  38 , whereby the second lock arm  179  and the first lock arm  178  are pivotally moved to respective unlocking positions against urging force of the spring. In this state, the lock nail  178   a  is disengaged from the lock-receiving hole  172 , and hence the pivotal operation of the ejection lever  167  is permitted. In short, when the print head unit  38  is at its home position, the ejection plate  161  is allowed to tilt. 
     On the other hand, as shown in FIG. 20, when the print head unit  38  is moved from its home position, the engaging piece portion  179   b  of the second lock arm  179  is kept from contact with the protrusion  38   a , whereby the second lock arm  179  and the first lock arm  178  are pivotally moved to respective locking positions by the urging force of the spring. In this state, the lock nail  178   a  is engaged with the lock-receiving hole  172 , and hence the pivotal operation of the ejection lever  167  is inhibited. In short, when the print head unit  38  is at a position other than its home position, the ejection plate  161  is inhibited from tilting. 
     By the construction described above, only when the print head unit  38  is at its home position, the ejection plate-moving device  163  is allowed to be operated, so that it is possible to prevent wrong operation of the ejection lever  167  when the print head unit  38  is at a position other than its home position. Thus, the construction makes it possible to prevent interference between the tape cartridge  4  and the print head unit  38 . 
     Next, the ejection plate  161  and the mounting guide plate  162  will be described in detail. As shown in FIGS. 3,  23 , and  24 , the ejection plate  161  is comprised of a main holding block-receiving plate  181  for receiving the main holding block  4   a  thereon, a connecting block-receiving plate  182  for receiving the connecting block  4   c  thereon, an auxiliary holding block-receiving plate  183  for receiving the auxiliary holding block  4   b  thereon, and the pair of left and right side plates  165  and  165  each connecting the three plates  181 ,  182  and  183 . The non-printing surface-side braking member  53  is fitted in a clearance between the main holding block-receiving plate  181  and the connecting block-receiving plate  182 , while the feed drive roller  43  is fitted in a clearance between the connecting block-receiving plate  182  and the auxiliary holding block-receiving plate  183 . Further, arranged under the auxiliary holding block-receiving plate  183  are a tilt shaft  184  extending in the left-right direction for serving as an axis of tilting motion of the ejection plate  161  and the cutting device  13  described hereinbefore. The connecting block-receiving plate  182  is formed with ink collecting openings  185  continuous with the respective ink collecting windows  142 . 
     The mounting guide plate  162  is pivotally attached to a rear end of the main holding block-receiving plate  181 . The plate  162  has a generally square shape which is slightly smaller in width than the main holding block-receiving plate  181 . The mounting guide plate  162  has a pair of left and right shaft-receiving portions  187  and  187  projecting outward from a lower end portion thereof. A pair of left and right trigger pieces  188  and  188  are formed between the pair of shaft-receiving portions  187  and  187  and also projecting outward from the lower end portion of the mounting guide plate  162 . On the other hand, the rear end portion of the main holding block-receiving plate  181  is formed with a pair of left and right shaft pin-retaining portions  189  and  189  corresponding to the respective shaft-receiving portions  187  and  187  and extending obliquely downward. The pair of shaft-receiving portions  187  and  187  are pivotally supported by the pair of shaft pin-retaining portions  189  and  189  in a manner sandwiched between the same. 
     Each of the trigger pieces  188  has an end portion formed with a trigger hook  188   a . The trigger hook  188   a  abuts against a hook catch  190  formed on the apparatus casing  6  and pivotally moves such that the mounting guide plate  162  falls or extends outward immediately before the ejection plate  161  tilting with its rear end upward is brought to the tilted position. On the other hand, when the ejection plate  161  is moved from the tilted position to the printing position, a rear surface of the mounting guide plate  162  is caught by an upper edge portion  191  continuous with an upper end of the hook catch  190  and pivotally moved such that the mounting guide plate  162  is received inward (see FIG.  25 ). Thus, a guide plate-pivoting mechanism comprised of the trigger hooks  188   a , the hook catches  190 , the mounting guide plate  162 , and the upper edge portion  191  of the apparatus casing  6  is arranged between the ejection plate  161  and the apparatus casing  6 . 
     From the state shown in FIG. 25 in which the lid (not shown in the figure) is opened, when the ejection lever  167  is pivoted forward, the ejection plate  161  is tilted from the printing position to the tilted position, and at the same time the mounting guide plate  162  is pivotally moved from the non-receiving to the receiving position (see FIG.  26 ). In this state, the ejection plate  161  and the mounting guide plate  162  each inclined with its rear end lifted upward are arranged in a line, so that the upper surface of the former and that of the latter are flush with each other. The tape cartridge  4  is placed on the upper surface of the mounting guide plate  162  by utilizing the inclination (see FIG. 26) and then pushed along the mounting guide plate  162  and the ejection plate  161 , whereby it is inserted to a predetermined innermost position of the cartridge compartment  20  (see FIG.  27 ). 
     After the tape cartridge  4  is inserted to the innermost position of the cartridge compartment  20 , the ejection lever  167  is pivoted rearward, whereby the ejection plate  161  is moved from the tilted position to the printing position as shown in FIGS. 28 and 25. As the ejection plate  161  is moved from the tilted position to the printing position, the mounting guide plate  162  is pivotally moved from the receiving position to the non-receiving position. At the non-receiving position, the mounting guide plate  162  is held in the erected state within the apparatus casing  6  such that it can be accommodated under the lid  7  when the lid  7  is closed. To replace the tape cartridge  4  with a new one, the tape cartridge  4  is drawn out along the ejection plate  161  and the mounting guide plate  162 , and then the new one is inserted. 
     Since in mounting or removing the tape cartridge  4  in or from the cartridge compartment  20 , the mounting guide plate  162  pivotally attached to the ejection plate  161  is tilted such that the two plates  161  and  162  become flush with each other, as described above, so as to lengthen a mounting guide path for guiding the tape cartridge  4 , it is possible to insert or draw the tape cartridge  4  smoothly from the side of the apparatus body  2  by sliding the same in accordance with an inclination of the ejection plate  161 . Therefore, even a tape cartridge  4  with a relatively large length can be mounted or removed without any troublesome operation. 
     As described hereinbefore, the tape cartridges  4  are classified into the three types “S”, “M”, and “L” which are different in width from each other. Each of the three types of tape cartridges  4  is mounted after having its lateral center aligned with those of the ejection plate  161  (main holding block-receiving plate  181 , to be more precisely) and the mounting guide plate  162 . For this alignment, as shown in FIGS. 24 and 29, the main holding block-receiving plate (ejection plate  161 )  181  and the mounting guide plate  162  are each formed thereon with a pair of inner guide ridges  201  and  201  for guiding the “S” or “M” type of tape cartridge  4  as well as a pair of outer guide ridges  202  and  202  for guiding the “L” type of tape cartridge  4 . 
     The pair of inner guide ridges  201  and  201  are arranged in parallel with each other such that the distance between inner edges thereof corresponds to the width of the cartridge casing  16  of the tape cartridge  4  of the “S” type, and the distance between longitudinal centers thereof to that between longitudinal centers of a pair of guide grooves  144  and  144  formed in the tape cartridge  4  of the “M” type (see FIG.  17 ). Similarly, the pair of outer guide ridges  202  and  202  are arranged in parallel with each other such that the distance between inner edges thereof corresponds to the width of the cartridge casing  16  of the tape cartridge  4  of the “M” type, and the distance between longitudinal centers thereof to that between longitudinal centers of a pair of guide grooves  144  and  144  formed in the tape cartridge  4  of the “L” type. 
     That is, the “S” type of tape cartridge  4  having no guide grooves formed therein is mounted (slid) with opposite left and right edges thereof being guided between the inner edges of the pair of inner guide ridges  201  and  201 . The “M” type of tape cartridge  4  is slid and mounted in a state in which the pair of guide grooves  144  and  144  formed therein are engaged with the pair of inner guide ridges  201  and  201 , and at the same time, secondarily, the “M” type of tape cartridge  4  is mounted with opposite left and right edges thereof being guided between the inner edges of the pair of outer guide ridges  202  and  202 . Similarly, the “L” type of tape cartridge  4  is slid and mounted in a state in which the pair of guide grooves  144  and  144  formed therein are engaged with the pair of outer guide ridges  202  and  202 , and at the same time, secondarily, the “L” type of tape cartridge  4  may be mounted by being guided between inner surfaces of the side plates  165  and  165  of the ejection plate  161 . 
     Although the plurality of types of tape cartridges  4  are each mounted on the ejection plate  161  in a center-aligned manner as described above, they are center-aligned in design to the cartridge compartment  20  when mounted therein. Further, the feed drive roller  43 , the non-printing surface-side braking member  53 , and the like for accessing the mounted tape cartridge  4  are also arranged with their centers in alignment with the lateral center of the cartridge compartment  20 . Therefore, the feed driven roller  42  and the printing surface-side braking member  51  of the tape cartridge  4  which is formed in accordance with the tape width are held in contact with the feed drive roller  43  and the non-printing surface-side braking member  53 , respectively, in a center-aligned manner, which enables forces to act axially evenly between the respective corresponding ones of the component parts in contact with each other, thereby preventing unsymmetrical wear of the feed drive roller  43  and the non-printing surface-side braking member  53 . 
     Further, since the tape cartridge  4  is mounted in the cartridge compartment  20  by being guided by the pair of inner guide ridges  201  and  201  or the pair of outer guide ridges  202  and  202 , it is possible to carry out lateral positioning of the tape cartridge  4  in the cartridge compartment  20  with ease. It should be noted that the ejection plate  161  has a hook, not shown, formed on an underside surface of a rear portion thereof, for engaging with a component of the apparatus body  2  when the ejection plate  161  is moved to the printing position, to thereby prevent the ejection plate  161  from being lifted when it is in the printing position. 
     As described hereinbefore, the tape cartridge  4  set at the printing position is urged upward by the feed drive roller  43  and the non-printing surface-side braking member  53 . Accordingly, it is not only required to prevent the ejection plate  161  from being lifted, as describe above, but also to prevent the tape cartridge  4  from being lifted from the ejection plate  161 . Further, it is required to reliably insert the tape cartridge  4  placed on the mounting guide plate  162  and the main holding block-receiving plate  181  of the ejection plate  161  in a center-aligned manner to the innermost position on the ejection plate  161 , thereby positioning the same with accuracy. 
     To meet the requirement, as shown in FIGS. 4,  23 , and  24 , the main holding block-receiving plate  181  of the ejection plate  161  has a pair of left and right nails  203  and  203  raised on a front end portion thereof, while the auxiliary holding block-receiving plate  183  has a pair of left and right inner nails  204  and  204  and a pair of left and right outer nails  205  and  205  each protruding from a rear end thereof. Further, the main holding block-receiving plate  181  has a latch mechanism  206  arranged at a center of the front end portion thereof and a locating pin  207  erected in the vicinity of the latch mechanism  206 . 
     The pair of nails  203  are each raised on the main holding block-receiving plate  181  in a manner facing rearward, for engagement with a corresponding one of the pair of left and right nail-receiving recesses  145  and  145  formed in the body casing  71  of the tape cartridge  4  (see FIG.  17 ). The pair of left and right inner nails  204  and  204  and the pair of left and right outer nails  205  and  205  are each formed by cutting the rear end portion of the auxiliary holding block-receiving plate  183  into a projection. The pair of inner nails  204  and  204  correspond to the tape cartridge  4  of the “S” or “M” type, and the pair of inner nails  204  and  204  and the pair of left and right outer nails  205  and  205  to the “L” type. More specifically, the body casing  71  of each of the “S” type of tape cartridge  4  and the “M” type of tape cartridge  4  is formed with the pair of nail-receiving recesses  146  and  146  (behind the tape-holding member  121  in FIG.  8 ), for engagement with the pair of inner nails  204  and  204 . On the other hand, the body casing  71  of the “L” type of tape cartridge  4  is formed with four nail-receiving recesses  146  for engagement with the pair of inner nails  204  and  204  and the pair of outer nails  205  and  205 . 
     The tape cartridge  4  is thus retained on the ejection plate  161  at the two longitudinally (front-rear) different locations and the two different laterally (left-right) different locations, so that the tape cartridge  4  inserted to the innermost position on the ejection plate  161  can be immovably secured in the apparatus body  2 , without being lifted from the ejection plate  161 . It should be noted that the nail-receiving recesses  145  and the nail-receiving recesses  146  each have a sloped nail-receiving surface, not shown, and hence, when the tape cartridge  4  is slid toward the innermost position on the ejection plate  161 , it is brought into a loosely engaged state immediately before reaching the innermost position and then into a rigidly engaged state in the innermost position. 
     The latch mechanism  206  is arranged in an underside of the front end portion of the main holding block-receiving plate  181 . The latch mechanism includes a latch body  210  which can be projected and retracted from a square opening  209  formed in the front end portion of the main holding block-receiving plate  181 , a latch holder  211  for holding the latch body  210 , and a latch spring  212  for urging the latch body  210  in the direction of projection via the latch holder  211 . The locating pin  207  having a cylindrical shape is formed integrally with the main holding block-receiving plate  181  and erected at a location slightly rearward of the square opening  209 . The slot  147  is formed in the body casing  71  of the tape cartridge  4  for association with the locating pin  207  (see FIG.  17 ). As shown in the figure, the slot  147  has a latch braking portion  147   a , a latch-receiving groove  147   b , and a locating groove  147   c  which are arranged in the mentioned order from an extreme front end (innermost end) of the slot  147 . 
     When the tape cartridge  4  is slid toward the innermost position on the ejection plate  161 , the latch body  210  relatively climbs over the latch braking portion  147   a  to be brought into engagement with the latch-receiving groove  147   b , and at the same time, the locating pin  207  is fitted in the locating groove  147   c . As a result, the user determines by the touch that the tape cartridge  4  has been properly mounted in the innermost position on the ejection plate  161 . At this time, the tape cartridge  4  is automatically mounted on the ejection plate  161  in a center-aligned manner. 
     Next, a construction for sensing replacement of tape cartridges  4  and eliminating looseness of the printing tape T 1  of a new tape cartridge  4  will be described with reference to FIGS. 3,  30  and  31 . As described hereinbefore, the tape cartridge  4  is supplied to the user in a state having the leading portion Ta of the printing tape T 1  fed out of the cartridge casing  16 . Therefore, when the tape cartridge  4  is mounted in the apparatus body  2 , there is looseness in a portion of the printing tape T 1  opposed to the print head  36 . If a printing operation is started in this state, the print head (print head unit  38 )  36  can be caught in the printing tape T 1 . To overcome this problem, according to the present embodiment, when a tape cartridge  4  is replaced with a new one (or when an identical tape cartridge  4  is remounted), the replacement or the remounting is detected, and the printing tape T 1  is slightly fed for tensioning of the same (this operation will be hereinafter referred to as “tensioning feed”). More specifically, when the tape cartridge  4  is mounted, the printing tape T 1  and the laminating tape T 2  are fed an inch or so, and an unnecessary leading portion thereof is cut off. 
     As shown in FIG. 31, a control system for carrying out the tensioning feed includes a CPU 221 , a ROM  222 , a switch circuit  223 , a carriage motor driver  224 , a feed motor driver  225  and a cutter motor driver  226 , a replacement-detecting switch  227  connected to the switch circuit  223 , the photo interrupter  39  connected to the CPU  221 , the carriage motor  35  connected to the carriage motor driver  224 , the feed motor  44  connected to the feed motor driver  225 , and the cutter motor  66  connected to the cutter motor driver  226 . 
     As described in more detail hereinbelow, when the replacement-detecting switch  227  detects the replacement of the tape cartridges  4 , the feed motor  44  is driven for tensioning feed of the printing tape T 1 . Then, the carriage motor  35  is driven prior to a printing operation, whereby the print head unit  38  performs reciprocating motion (provisional motion) over the tape cartridge  4  in a transverse direction to the direction of feeding of the printing tape T 1 . During this reciprocating motion, the photo interrupter  39  installed on the print head unit  38  senses a tape type of the printing tape T 1 , and at the same time, the print head unit  38  operates the replacement-detecting switch  227  mechanically to erase a replacement record of the tape cartridge  4 . More specifically, the operation for replacement of the tape cartridge  4  is utilized for storing the replacement record, and then, after the tensioning feed of the printing tape T 1 , the operation by the print head unit  38  for the type detection is utilized to erase the replacement record. 
     As shown in FIGS. 3 and 30, the replacement-detecting switch  227  is arranged on the frame  17  at a location adjacent to a lateral side of the ejection plate (connecting block-receiving plate  182 )  161  in a manner projecting upward from a switch opening  232  formed in an extended plate portion  231  of the connecting block-receiving plate  182 . The replacement-detecting switch  227  is comprised of a switch body  233  attached to the frame  17 , a switch-operating member  234  for switching the switch body  233  between an ON state and an OFF state, a column member  235  erected on the frame  17 , for supporting the switch-operating member  234  such that the switch-operating member  234  can be selectively brought to a vertical position or a horizontal position, and an extension spring  236  for urging the switch-operating member  234  toward the vertical position. 
     The switch-operating member  234  is attached to the column member  235  via a support shaft  237  in a manner pivotally movable between the vertical position and the horizontal position. The switch-operating member  234  switches on the switch body  233  by its end portion when brought to the horizontal position. The extension spring  236  extends between an intermediate portion of the switch-operating member  234  and the frame  17 . When the switch-operating member  234  is brought to the vertical position, the extension spring  236  urges the switch-operating member  234  in such a direction as to hold the same in the position. Further, the extension spring  236  crosses over the support shaft  237 , (i.e. crosses over a dead center position thereof) during pivotal movement of the switch-operating member  234  toward the horizontal position, to urge the switch-operating member  234  moved to the horizontal position such that it is held in the position. That is, the switch-operating member  234  is urged by the extension spring  236  toward the vertical position or the horizontal position and held in a selected one of the two positions by the crossing of the extension spring  236  over the dead center position. 
     When the ejection plate-moving device  163  is operated in a state in which the switch-operating member  234  is placed in the horizontal position, so as to cause the ejection plate  161  to tilt with its rear end upward, a portion of an edge of the switch opening  232  pushes the switch-operating member  234  upward to move the same to the vertical position, whereby the switch body  233  is turned off. On the other hand, when the carriage motor is driven in a state in which the switch-operating member  234  is placed in the vertical position, to cause the print head unit  38  to perform reciprocating motion, the print head unit  38  pushes the switch-operating member  234  down to the vertical position, whereby the switch body  233  is turned on. 
     The OFF state of the switch body  233  means that the ejection plate-moving device  163  has been operated and that replacement of tape cartridges  4  has been detected. Further, the OFF state means that the replacement record has been stored based on the detection of the replacement of the tape cartridges  4 . On the other hand, the ON state of the switch body  233  means that the print head unit  38  has performed reciprocating motion after the tensioning feed of the printing tape T 1 , i.e. that completion of the tensioning feed has been detected. Further, the ON state means that the replacement record has been erased based on the detection of the completion of the tensioning feed. Therefore, in the ON state of the switch body  233 , even when the power of the tape printing apparatus  1  is turned on, no tensioning feed or detection of a cartridge type is carried out. 
     As described above, since the tensioning feed of the printing tape (laminated printing tape T) T 1  is carried out immediately after replacement of tape cartridges  4 , the print head  36  is protected from being caught in the printing tape T 1  during printing operation, which prevents the printing tape T 1  from jamming and the print head  36  from being damaged. Further, since the replacement record of the tape cartridge  4  is mechanically stored, it is not required to carry out tensioning feed during operation having no relation to the replacement of tape cartridges  4 , which makes it possible to avoid waste of the printing tape T 1  and the laminating tape T 2 . 
     It is further understood by those skilled in the art that the foregoing are preferred embodiments of the invention, and that various changes and modification may be made without departing from the spirit and scope thereof.