Abstract:
A disk cartridge incorporating a disk-shaped recording medium and having an opening portion for enabling a recording and/or reproducing operation by a recording and/or reproducing device having a disk cartridge main body, a disk holder detachably mountable to the disk cartridge main body, and a reverse insertion preventing structure for preventing the disk holder having a surface and a rear face from being inserted turning inside out into the disk cartridge main body when the disk holder is mounted to the disk cartridge main body.

Description:
CROSS REFERENCE TO RELATED APPLICATION 
   This is a continuation of U.S. application Ser. No. 09/233,205, filed Jan. 19, 1999, now U.S. Pat. No. 6,349,087, the subject matter of which is incorporated by reference herein, and relates to copending U.S. application Ser. No. 09/456,422, filed Dec. 8, 1999. 

   BACKGROUND OF THE INVENTION 
   The present invention relates to a disk cartridge incorporating a disk-shaped recording medium such as an optical disk, a magneto-optical disk or the like. 
   Conventionally, a disk such as an optical disk or the like is used in a disk-shaped recording medium. These disks are frequently used by being incorporated in a disk cartridge to prevent recording reproducing error from causing by adhesion of dust and dirt or the like to a record face. 
   In the meantime, according to a disk-shaped recording medium, when the record density remains the same, naturally, the larger the diameter, the larger the record capacity. Meanwhile, when a disk-shaped recording medium mentioned above is used as a recording medium of a portable recording/reproducing device, for example, a video camera or the like, a small-sized disk is excellent in portability. Therefore, disks having different sizes may be used for a disk of a portable device and a disk of a stationary device. In this case, a small-sized one is naturally used for a disk cartridge used in the portable disk. When the recording system remains the same and the size of disk differs, if the disk can be mounted to a recording/reproducing device, record/reproduction can be carried out by recording/reproducing means installed to the recording/reproducing device. Therefore, by taking only a disk from a small-sized disk cartridge and switching it to a disk cartridge having an outer configuration the same as that of a disk cartridge of a stationary device, the disk for potable use can be recorded/reproduced by a recording/reproducing apparatus for stationary use. 
   As a structure for taking out a disk from a disk cartridge, there is provided a method of arranging a portion capable of inserting and detaching a disk at a portion of a disk cartridge as disclosed in, for example, Japanese Unexamined Patent Publication No. JP-A-5-242626. 
     FIG. 20  shows a conventional structure of taking out a disk from a disk cartridge. A disk insertion and detachment port  12   c  is installed at a position other than a position arranged with a shutter  3   c  and a disk insertion and detachment port opening and closing member  8   c  is arranged there. Normally, according to the disk insertion and detachment port opening and closing member  8   c , a locking claw  9  is fitted to a locking hole  13  installed to a disk cartridge  1   c  and the disk insertion and detachment port  12   c  is closed. In taking out a disk  4 , the locking claw  9  is disengaged from the locking hole  13  and the disk insertion and detachment port opening and closing member  8   c  is rotated centering on a fulcrum, the disk insertion and detachment port  12   c  is opened and insertion and detachment of the disk  4  is carried out. In this case, the taken out disk  4  is handled by the hand and accordingly, the record face may be touched erroneously by the hand and may be contaminated thereby. 
   Further, the disk cartridge may be provided with information inherent to an incorporated disk. In that case, holes or notches are provided on the surface of the cartridge and information of the disk is transmitted to the device side by presence or absence of the holes or the notches. As information provided to a disk cartridge, there are, for example, information which can be switched by a user as in prevention of recording to prevent erroneous recording and information which has been determined from the start in respect of an incorporated disk as in differentiation of a disk for music from a disk for recording computer data. When the disk is moved between different cartridges, according to the conventional method, only the disk is moved and information provided to a disk cartridge mentioned above is not moved. 
   Further, in recent years, a disk both faces of which are used as signal faces as in DVD-ROM/RAM has been spreading. In the case of such a disk, a printed face is difficult to set on the disk and accordingly, a user is difficult to grasp later information concerning the disk, that is, what file name of data, software name, controller, date and so on are written therein. When a disk is moved between different cartridges, according to the conventional method, only the disk is moved, the disk is difficult to discern when it is taken out from the disk cartridge and a disk to be exchanged may be taken wrongly. 
   SUMMARY OF THE INVENTION 
   The present invention provides means for moving a disk without directly in touch with it when the disk is moved between disk cartridges. 
   That is, there is provided a moving method for moving a disk along with a disk holder as means for moving the disk without directly in touch with the disk and according to the method, a disk cartridge is constituted by a main body portion and a disk holder and when a disk is moved, the disk is held by the disk holder, the disk is moved along with the disk holder and accordingly, it is not necessary to directly touch the disk. 
   For this purpose, there is constructed a structure in which a disk holder is arranged to a disk cartridge and the disk holder can be detached from the disk cartridge main body. Further, the disk holder is provided with disk holding member, when the disk holder is mounted to the disk cartridge main body, the disk holding member releases holding of the disk, when the disk holder is detached from the disk cartridge main body, the disk holding member holds the disk and the disk is detached from the disk cartridge along with the disk holder. Further, when a disk is moved between different disk cartridges, the disk is moved along with the disk holder. 
   Further, there is constructed a structure in which disk holding member regulating portions are installed at inside of a disk cartridge and when a disk holder is attached to the disk cartridge, the disk holding member is brought into contact with the disk holding member regulating portions and are elastically deformed by which the disk holding member releases holding of the disk. 
   Further, there is provided a reverse insertion preventing means for preventing a disk holder from being inserted into a disk cartridge with a surface and a rear surface thereof upside down when the disk holder is attached to the disk cartridge. 
   As reverse insertion preventing means, the shape of a disk cartridge main body and the shape of the disk holder are formed in shapes which are not fitted to each other when the disk holder is inserted into the disk cartridge main body with the surface and the rear face upside down and as reverse insertion preventing means, shapes of the disk holding means may be made asymmetrical in respect of the left and right directions. 
   Further, according to the invention, when the disk is moved between different disk cartridges, disk information held by a disk cartridge can be moved along with the disk. 
   For that purpose, information in respect of the disk held by the disk cartridge is provided at a disk holder portion. When the disk is moved between the different disk cartridges, the disk is moved along with the disk holder. Then, the information in respect of the disk held by the disk cartridge is provided at the disk holder portion and when the disk is moved to a different disk cartridge, the disk information held by the disk holder portion can be read by a recording and/or reproducing device. 
   Further, an information holding portion of a recording medium is provided to a disk cartridge main body and the disk cartridge main body incorporates transmitting means for transmitting information held by a disk holder to the information holding portion of the disk cartridge main body in the case where positions of an information holding portion of the disk holder and the information holding portion of the disk cartridge main body differ from each other when the disk holder is attached to the disk cartridge main body. 
   Further, the information in respect of the disk of the disk holder can be detected at least from two directions. 
   Further, the information in respect of the disk of the disk holder is identified by presence or absence of notches at least over two faces of the disk cartridge. 
   Further, in the case of a disk cartridge where movement of a disk is not needed, an outer configuration shape thereof is made substantially equal to that of the above-described disk cartridge and the shape of the portion of holding the information in respect of the disk is made substantially equal thereto. Further, the disk cartridge is provided with a structure where only an opening portion equal to or smaller than the outer configuration of the disk is installed and the disk cannot be inserted into or detached from the disk cartridge by which a disk cartridge having a compatibility with the above-described disk cartridge is realized. 
   Further, according to the invention, a region for determining the disk information provided to the disk cartridge or a label region to which a user can arbitrarily write information can be moved when a disk is moved between different disk cartridges. 
   For that purpose, the region for determining disk information or the label region is provided to the disk holder. Or, there is constructed a constitution of providing a label region to which a user can arbitrarily write or erase necessary information and/or a region onto which a label can be pasted. That is, the information which the user can write and/or erase as necessary in respect of a disk is provided to a disk holder portion and even when the disk cartridge main body is changed, the information of the disk remains in the disk holder portion. 
   Further, the label region and/or the region on which a label is pasted is constituted to previously provide a recess portion of 0.2 mm or more such that it is not raised in contrast to a face where the region is provided even when a paper label or the like is pasted on the disk holder. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is a view showing an embodiment of the present invention and is a view showing a structure of a disk cartridge; 
       FIG. 2  is a view showing the embodiment of the invention and is a view showing a state in which a disk holder is detached from the disk cartridge; 
       FIG. 3  is a view showing the embodiment of the invention and is a view showing a behavior of mounting the disk holder to a disk cartridge having different shape and size; 
       FIG. 4  is a view showing the embodiment of the invention and is a view in which the disk holder has been mounted to the disk cartridge having different shape and size; 
       FIG. 5  is a view showing an embodiment of the invention and is a view showing the structure of a disk cartridge; 
       FIG. 6  is a view showing the embodiment of the invention and a view showing a state in which the disk holder is detached from the disk cartridge; 
       FIG. 7  is a view showing the embodiment of the invention and a view showing a behavior of mounting the disk holder to a disk cartridge having different shape and size; 
       FIG. 8  is a view showing the embodiment of the invention and is a view in which the disk holder has been mounted to the disk cartridge having different shape and size; 
       FIG. 9  is a view showing an embodiment of the invention and a view showing an outlook of a disk cartridge; 
       FIGS. 10A ,  10 B and  10 C are views showing the embodiment of the invention and views explaining disk information transmitting means installed to the disk cartridge; 
       FIGS. 11A and 11B  are views showing the embodiment of the invention and views showing a shape of a disk information holding portion installed to the disk holder; 
       FIGS. 12A and 12B  are views showing the embodiment of the invention and views explaining the operation of the disk information transmitting means installed to the disk cartridge; 
       FIGS. 13A and 13B  are views showing an embodiment of the invention and an upper view showing the structure of a disk cartridge and a view showing a label; 
       FIG. 14  is a view showing the embodiment of the invention and an upper view showing a state of detaching a disk holder from the disk cartridge; 
       FIGS. 15A ,  15 B,  15 C,  15 D,  15 E and  15 F are views showing embodiments of the invention and explanatory views of a disk cartridge and label regions of the disk cartridge; 
       FIG. 16  is a view showing an embodiment of the invention and an upper view showing a behavior of mounting a disk holder to a disk cartridge having different shape and size; 
       FIG. 17  is a view showing the embodiment of the invention and an upper view in which a disk holder is mounted to the disk cartridge having different shape and size; 
       FIGS. 18A and 18B  are views showing an embodiment of the invention and explanatory views in which a disk holder is mounted to a disk cartridge having different shape and size; 
       FIGS. 19A ,  19 B,  19 C,  19 D and  19 E are views showing an embodiment of the invention and explanatory views showing stepped differences of a label region of a disk holder; and 
       FIG. 20  is a view explaining a conventional disk cartridge which is a disk cartridge having a disk insertion and detachment port for exchanging a disk. 
   

   DESCRIPTION OF THE PREFERRED EMBODIMENTS 
   An explanation will be given of an embodiment of the invention in reference to FIG.  1  through  FIG. 4  as follows.  FIG. 1  is a view explaining of the structure of a disk cartridge according to an embodiment of the invention. A disk cartridge  301   a  is installed with an opening portion through which a recording and/or reproducing device makes access to a disk  4  for recording and/or reproducing. A shutter  3   a  covers the opening portion to prevent dust and dirt or the like from adhering to the disk  4  when the disk cartridge  301   a  is at outside of the recording and/or reproducing device and the shutter  3   a  is urged in the closing direction by a shutter spring  2   a . A disk holder  5  which can be detached from the disk cartridge  301   a  is arranged at a portion opposed to a position where the shutter  3   a  is arranged. In this case, a disk cartridge main body  1   a  is defined by a remaining constituent portion which is constituted when the disk holder  5  is detached from the disk cartridge  301   a . The disk holder  5  is attached thereto by engaging together locking claws  6  with locking holes  7  and when the disk holder  5  is detached therefrom, the locking is released by detaching the locking claws  6  from the locking holes  7 . The disk holder  5  is attached with holder arms  10   a  and  10   b  for holding the disk  4  and in a state in which the disk holder  5  is attached to the disk cartridge main body  1   a , the holder arms  10   a  and  10   b  are brought into contact with arm regulating members  11   a  and  11   b  and are elastically deformed in a direction of releasing the holding state of the disk  4 . Further, the shapes of the left holder arm  10   a  and the right holder arm  10   b  differ from each other and in this embodiment, according to the shape of the holder arm  10   a , an accurate angle portion at a front end of the holder arm  10   b  is removed. The arm regulating member  11   a  is formed to engage with the shape. By forming the shapes of the left and right holder arms  10   a  and  10   b  in this way, in attaching the disk holder  5 , insertion thereof with the surface and the rear face upside down can be prevented. That is, in the case of the embodiment, when the disk holder  5  is inserted with the surface and the rear face upside down, the front end of the holder arm  10   b  is brought into contact with the arm regulating member  11   a  and the disk holder  5  cannot be completely inserted. Although according to the embodiment, reverse insertion is prevented by constituting the left and right arm holders  10   a  and  10   b  and the left and right arm regulating members  11   a  and  11   b  are asymmetrical from each other, the constitution is not limited thereto but the reverse insertion may be prevented by a method in which, for example, a protrusion or recess is installed to only one of the left and right disk holders and a shape matching the protrusion or the recess is arranged in a disk cartridge. 
     FIG. 2  shows a view in which the disk holder  5  is detached from the disk cartridge  301   a  according to the embodiment. As shown by the drawing, the holder arms  10   a  and  10   b  installed to the disk holder  5  are formed to hold the disk  4 . Although when the disk holder  5  is attached to the disk cartridge main body  1   a , the holder arms  10   a  and  10   b  are elastically deformed by the arm regulating members  11   a  and  11   b  and are released from holding the disk  4 , when the disk holder  5  is detached therefrom, the holder arms  10   a  and  10   b  recover to original shapes and hold the disk  4 . Thereby, when the disk holder  5  is detached, the disk holder  5  can be detached along with the disk  4 . In this case, an operator does not directly touch the disk  4  and therefore, fat, oil or the like of the hand does not adhere thereto. 
   An explanation will be given of a method of moving the disk  4  held by the disk holder  5  to a disk cartridge having different shape and size in reference to  FIGS. 3 and 4 .  FIG. 3  is a view showing a disk cartridge main body  1   b  having shape and size different from those of the disk cartridge  301   a  in correspondence with the disk holder  5  of FIG.  1 . The disk cartridge main body  1   b  is a disk cartridge larger than the disk cartridge main body  1   a . The disk cartridge main body  1   b  is arranged with a shutter  3   b  and a shutter spring  2   b  similar to the disk cartridge main body  1   a . Further, arm regulating members  11   c  and  11   d  for elastically deforming the holder arms  10   a  and  10   b  are arranged at inside thereof. Different shapes are also constituted for left and right arm regulating members  11   c  and  11   d  for preventing reverse insertion and correspond to the shapes of the holder arms  10   a  and  10   b . A disk insertion and detachment port  12   b  for inserting and detaching the disk holder  5  is provided at a portion opposed to a position in which the shutter  3   b  is arranged and the disk insertion and detachment port  12   b  can be opened and closed by a disk insertion and detachment opening and closing member  8   b . The disk insertion and detachment port opening and closing member  8   b  is locked by engaging a locking claw  9  to a locking hole  13  and by disengaging the locking claw  9 , the locking is released and the port can be opened. 
   The disk  4  is moved by inserting the disk holder  5  holding the disk  4  into the disk insertion and detachment port  12   b  and closing the disk insertion and detachment port opening and closing member  8   b  and by the operation the movement of the disk  4  into the disk cartridge main body  1   b  is completed with no direct touch with the disk  4 .  FIG. 4  is a view showing a disk cartridge  301   b  in which the disk  4  has been attached to the disk cartridge main body  1   b . Similar to the disk cartridge main body  1   a , the holder arms  10   a  and  10   b  are elastically deformed in a direction of releasing the holding state of the disk  4  at time point at which the disk holder  5  is inserted into the disk cartridge main body  1   b.    
   By the above-described constitution, the disk can be moved between different cartridges with no direct touch with the disk. 
   Next, an explanation will be given of successive embodiments of the invention in reference to FIG.  5  through  FIG. 12. A  disk holder  105  is installed with sensing areas  14   a ,  14   b ,  14   c ,  14   d ,  15   a ,  15   b ,  15   c  and  15   d  for having a recording and/or reproducing device determine information of a disk. According to the embodiment, both faces of the disk  4  can be used as a premise and each of the sensing areas  14   a ,  14   b ,  14   c  and  14   d  and the sensing areas  15   a ,  15   b ,  15   c  and  15   d  holds information of one face thereof. Accordingly, the sensing areas  14   a ,  14   b ,  14   c  and  14   d  and the sensing areas  15   a ,  15   b ,  15   c  and  15   d  are installed at positions symmetrical with each other in respect of the surface and the rear face. Further, the sensing area of the embodiment is identified by 1 bit constituted by presence or absence of a notch at the disk holder  105  as shown by  FIGS. 11A and 11B . According to a disk cartridge  17   a , the sensing areas are prepared at 4 locations in respect of one face and accordingly, information of 4 bits can be held. As information which can be held by the sensing areas  14   a ,  14   b ,  14   c  and  14   d  and the sensing areas  15   a ,  15   b ,  15   c  and  15   d , there are, for example, a piece of information which can be switched by a user for prevention of recording to prevent erroneous recording and a piece of information which has already been determined from the start in respect of a disk to be incorporated as in differentiation of a disk for music use from a disk for recording computer data or differentiation of a disk in correspondence with one face from a disk in correspondence with both faces. By reading information of the sensing areas, information of the disk  4  in the disk cartridge  17   a  can previously be detected by a recording and/or reproducing device. 
     FIG. 6  is a view in which a disk holder  105  is detached from the disk cartridge  17   a . When the disk holder  105  is detached therefrom, holder arms  113   a  and  113   b  installed to the disk holder  105  hold the disk  4  and the disk  4  can also be taken out therefrom along therewith. In this case, a user does not directly touch the disk  4  and accordingly, fat, oil or the like of the hand does not adhere thereto. An explanation will be given of a behavior of attaching the disk holder  105  to other disk cartridge main body  101   b  in reference to FIG.  7  and FIG.  8 .  FIG. 7  is a view showing the shape of the disk cartridge main body  101   b  having shape and size different from those of a disk cartridge main body  101   a  of  FIG. 5  to which the disk holder  105  corresponds. A notch  107  penetrated to inside of the disk cartridge is installed at the vicinity of a disk insertion and detachment port  112   b .  FIG. 8  is a view showing a state in which the disk  4  has been attached to the disk cartridge main body  101   b . The sensing areas  14   a ,  14   b ,  14   c  and  14   d  installed to the disk holder  105  are exposed to outside of the disk cartridge via the notch  107  installed to the disk cartridge main body  101   b  and a recording and/or reproducing device can previously detect information of the disk  4  by reading information of the sensing areas  14   a ,  14   b ,  14   c  and  14   d . In this way, when a disk is moved between different disk cartridges, disk information held by the disk cartridge can also be moved. 
   An explanation will be given of another embodiment of the invention in reference to FIG.  9  through FIG.  12 .  FIG. 9  shows a large-sized disk cartridge  17   c  similar to the disk cartridge shown by  FIG. 7  in the previous embodiment. Originally, a disk having a diameter larger than that of the disk  4  shown by the previous embodiment is used in a disk cartridge having shape and size the same as those of the disk cartridge  17   c . Therefore, the disk information is also provided at a portion proximate to an end of the disk cartridge to prevent interference with a large diameter disk. Therefore, disk information detecting means of a recording and/or reproducing device for use of a large-sized disk cartridge is also installed at a position in correspondence with the disk information providing portion. Hence, also in a disk cartridge main body  101   c  capable of exchanging disks according to the invention, sensing areas  16   a ,  16   b ,  16   c  and  16   d  holding disk information are installed at position the same as those in an original large-sized disk cartridge. The disk information of the disk holder  105  is dealt with by installing transmitting means for detecting information of the sensing areas of the disk holder  105  and transmitting the information to the sensing areas of the disk cartridge main body  101   c . By the transmitting means, detecting means exclusive for the sensing areas of the disk holder  105  needs not to install at a recording and/or reproducing device. 
   An explanation will be given of an embodiment of disk information transmitting means in reference to  FIGS. 10A ,  10 B and  10 C and  FIGS. 11A and 11B . As shown by  FIGS. 11A and 11B , the disk holder  105  (shown in  FIG. 7 ) is provided with 4 locations of the sensing areas in respect of one face thereof where 4 bits of information can be held. In detecting the sensing areas, a recording and/or reproducing device makes access from a lower face of a disk, that is, from B direction of FIG.  11 A and disk information transmitting means of the disk cartridge main body  101   c  of  FIG. 10A  makes access from A direction. Accordingly, as shown by  FIG. 11A , the sensing areas  15   a ,  15   b ,  15   c  and  15   d  of the disk holder  105  are identified by presence or absence of notches over 2 faces such that they can be detected from 2 directions. The notch portions may be an erroneous recording preventing portion  20  and so on for switching information later by a user as shown by FIG.  11 B. In the meantime, the disk information transmitting means is constituted by sensor arms  111   a ,  111   b ,  111   c  and  111   d , sensor pins  18   a ,  18   b ,  18   c  and  18   d  and torsional springs  19   a ,  19   b ,  19   c  and  19   d  as shown in  FIGS. 10A ,  10 B,  10 C.  FIG. 10A  is a penetrating view of the disk information transmitting means and FIG.  10 B and  FIG. 10C  are perspective views showing positions of the sensor arms  111   a ,  111   b ,  111   c  and  111   d  and arm rotational centers  110   a ,  110   b ,  110   c  and hod. The sensor arms  111   a ,  111   b ,  111   c  and  111   d  are rotatable respectively around the arm rotational centers  110   a ,  110   b ,  110   c  and  110   d  and are urged in one direction by the torsional springs  19   a ,  19   b ,  19   c  and  19   d . In this case, front ends of the sensor arms  111   a ,  111   b ,  111   c  and  111   d  are disposed at positions of the sensing areas  16   a ,  16   b ,  16   c  and  16   d . Further, the sensor arms  111   a ,  111   b ,  111   c  and  111   d  are rotated around the arm rotational centers  110   a ,  110   b ,  110   c  and  110   d  when forces are exerted at position designated by arrow marks of FIG.  10 B and front ends of the sensor arms  111   a ,  111   b ,  111   c  and  111   d  are moved and accordingly, recess portions are caused at the sensing areas  16   a ,  16   b ,  16   c  and  16   d . The sensor pins  18   a ,  18   b ,  18   c  and  18   d  are arranged respectively in correspondence with positions of the sensing areas  14   a ,  14   b ,  14   c  and  14   d  of the disk holder  105  and transmit presence or absence of notches of the sensing areas  14   a ,  14   b ,  14   c  and  14   d  of the disk holder  105  (shown in  FIG.7 ) to the sensor arms  111   a ,  111   b ,  111   c  and  111   d.    
   A specific explanation will be given of the operation of the disk information transmitting means in reference to  FIGS. 12A and 12B .  FIGS. 12A and 12B  are views explaining a state of one bit of disk information. As shown by  FIG. 12A , when a notch is present in the sensing area  14   b  of the disk holder  105  (shown in FIG. 7 ), the sensor pin  18   b  enters the notch and the sensor arm  111   b  is not pushed. Therefore, the sensor arm  111   b  is urged to an initial position by the torsional spring  19   b  and the sensing area  16   b  is closed by a front end portion of the sensor arm  111   b . In the meantime, when there is no notch in the sensing area  14   b  of the disk holder  105  as shown by  FIG. 12B , the sensor pin  18   b  is pushed by a wall face of the disk holder  105  and pushes the sensor arm  111   b . Therefore, the sensor arm  111   b  is rotated around the arm rotational center  110   b , the front end portion of the sensor arm  111   b  is moved and accordingly, a recess portion is caused at the sensing area  16   b . Further, a recording and/or reproducing device detects the disk information by determining presence or absence of the recess portion of the sensing area  16   b  of the disk cartridge  17   c.    
   In this way, the disk information can be transmitted from the disk holder  105  to the disk cartridge main body  101   c  by the disk information transmitting means. 
   Further, when a disk cartridge which needs not to move a disk in a recording and/or reproducing device using the disk cartridge according to the invention, by substantially equalizing an outer configuration of a disk cartridge and by using a disk cartridge having no disk holder and prescribing only sensing areas to the same shapes, a disk cartridge having compatibility in which parts such as a disk holder and the like are reduced can be realized. 
   By the above-described constitution, when a disk is moved between cartridges having different shapes and sizes, disk information held by a cartridge can also be moved simultaneously. 
   Next, an explanation will be given of successive embodiments of the invention in reference to FIG.  13 A through FIG.  19 E. In this case, according to the embodiments, there is constructed a constitution in which a disk holder  205  is installed with a label region  30  to which information necessary for a disk can be written or a label  31  as shown by  FIG. 13B  can be formed and pasted on the label region  30  in view of achieving storage or convenience in use of the disk  4  by a user. Further, although  FIG. 13A  shows a case in which the label region  30  is disposed on an upper face thereof, the invention is not limited thereto but the label region  30  may be disposed on one face on the rear side of the disk holder  205  and naturally may be both faces thereof. 
     FIG. 14  is an upper view when the disk holder  205  is detached from the disk cartridge main body  201   a  according to the embodiment. 
   Successively, an explanation will be given of further embodiments in reference to  FIGS. 15A ,  15 B,  15 C,  15 D,  15 E and  15 F.  FIG. 15A  is a view viewing a disk cartridge  217   a  of  FIG. 13  in an arrow mark A direction and  FIG. 15B  is a view viewing the disk cartridge  217   a  of  FIG. 13  in an arrow mark B′ direction, respectively. 
   Although in the previous embodiment, a description has been given of a case in which the label region  30  is used on the upper face of the disk holder  205 , according to the embodiment, as shown by  FIG. 15A , there is shown a case in which a label region  32  is provided on the front face of the disk holder  205 . Also in this method, information of the disk can easily be determined by the user. 
   Further, an explanation will be given of further embodiments in reference to  FIG. 15C , FIG.  15 D and FIG.  15 E. 
     FIG. 15C  shows an upper view of a disk cartridge according to the invention,  FIG. 15D  shows a front view thereof and  FIG. 15E  shows a side view thereof, respectively. Further, in  FIG. 15C , a shutter and holder arms are omitted for simplification. In  FIGS. 15C ,  15 D and  15 E, numeral  4  designates the disk, numeral  205  designates the disk holder and notation  201   c  designates a disk cartridge main body which is different from the disk cartridge main body  201   a  shown by  FIG. 13  in a state in which the disk holder  205  is locked by the disk cartridge main body  201   c , respectively. According to the disk cartridge of the invention, in a state in which the disk holder  205  is locked by the disk cartridge main body  201   c , the upper face and the side faces of the disk holder  205  are covered by the disk cartridge main body  201   c  and accordingly, when the label region is provided, for example, on the upper face of the disk holder  205 , the label region is concealed. However, by providing the label region  32  on the front face of the disk holder  205  as in the invention, the user can easily confirm information of the disk. 
   Further, an explanation will be given of further embodiment in reference to FIG.  15 F.  FIG. 15F  shows a view viewing the disk cartridge  217   a  from an arrow mark B direction in FIG.  13 . According to the invention, there is provided a constitution in which a hole  201   b  in a window-like shape is opened on a side face of the disk cartridge  217   a  and a side face portion of a holder arm  213   b  can be seen. Further, a label region  33  is provided at the side face portion of the holder arm  213   b  and by arbitrarily writing information to the region by the user, information of the disk  4  can easily be determined. Further, there may be constructed a structure in which a transparent sheet member is pasted on the hole  201   b  in a window-like shape such that dust or dirt is prevented from invading from outside to inside of the disk cartridge and the label region  33  can be recognized. 
   As has been explained above in reference to FIG.  13 A through  FIG. 15E , when the label region  30 ,  32  and  33  are present in the disk holder  205 , the label regions are installed on the upper face and/or the front face and/or the side face of the holder arm  213  portion integrally constituted with the disk holder  205  and in that case, the constitution may be dealt with by forming a shape in which a hole is opened in a window-like shape at a portion of the disk cartridge main body such that the label region can be confirmed when the disk holder is attached to the disk cartridge main body  201   a  or  201   c  and a similar effect can be achieved. 
   When the label regions  30 ,  32  and  33  are used in this way, for example, file name, software name, controller, date, information by bar codes and so on of data written to a disk can freely be written or erased such that the user can easily use it. The user may describe necessary content to the label regions  30 ,  32  and  33  directly by a writing instrument such as a “felt-tip pen” or the like or may form the paper label  31  or the like separately as mentioned above and thereafter may paste it on the label region  30  and/or the label region  32  and/or the label region  33 . Thereby, the disk holder  205  can be used similar to a paper label generally pasting on a floppy disk or the like, the user can easily determine the disk and accordingly, easiness of use is significantly promoted. 
   Successively, an explanation will be given of an embodiment when the disk holder  205  is attached to other disk cartridge main body in reference to FIG.  16  and FIG.  17 .  FIG. 16  is a view showing the shape of a disk cartridge main body  201   f  having shape and size different from those of the disk cartridge main body  201   a  of FIG.  13 . The disk cartridge main body  201   f  is a disk cartridge larger than the disk cartridge main body  201   a . A shutter  203   f  similar to that of the disk cartridge main body  201   a  is arranged at the disk cartridge main body  201   f . A disk insertion and detachment port  212   f  for inserting and detaching the disk holder  205  is provided at a portion opposed to a position at which the shutter  203   f  is arranged and can be opened and closed by a disk insertion and detachment port opening and closing member  208   f . The disk insertion and detachment portion opening and closing member  208   f  is locked by a locking claw  209  and can be opened by releasing the locking by disengaging the locking claw  209 . The disk  4  is moved by inserting the disk holder  205  holding the disk  4  into the disk insertion and detachment port  212   f  and closing the disk insertion and detachment port opening and closing member  201   f  and by the operation, the movement of the disk  4  into the disk cartridge main body  201   f  is completed with no direct touch with the disk  4 . Further, a notch  207  penetrating the inside of the disk cartridge is installed at a vicinity of the disk insertion and detachment port  212   f . Further, the label region  30  is provided in the disk holder  205  and the user freely writes information concerning the disk or describes information necessary for the disk  4  to the label  31  and pastes it. 
     FIG. 17  is a view showing a state in which the disk  4  is attached to the disk cartridge main body  201   f . In this case, the label region  30  installed to the disk holder  205  is exposed to the outside of the disk cartridge via the notch  207  installed to the disk cartridge main body  201   f  and the user can easily confirm content of the disk  4  by information of the label region  30 . 
   Further, in the invention, so far as the disk cartridge main body  201   f  is provided with shape and/or material by which the label region on the disk holder  205  can be seen when the disk holder  205  is attached thereto, shape, size and position of the notched portion are not particularly prescribed. Further, there may be constructed any constitution whereby the label region can be confirmed by forming a shape in which a hole in a window-like shape substituting for the notched portion of the disk cartridge is provided at the disk cartridge main body  201   f  and pasting a transparent sheet on the hole in a window-like shape. 
   Successively, an explanation will be given of further embodiment in reference to  FIGS. 18A and 18B . 
     FIG. 18A  shows a view viewing  FIG. 17  from an arrow mark C direction after opening the disk insertion and detachment port opening and closing member  208   f . Further, the disk insertion and detachment port opening and closing member  208   f  is omitted for simplification. Also in this case, by providing the label region  32  on the front face of the disk holder  205 , by only opening the disk insertion and detachment port member  208   f  without taking out the disk  4  from the disk cartridge  201   f , the content of the disk  4  can easily be recognized by information described in the label region  32 . 
   Further,  FIG. 18B  shows a view viewing a disk cartridge  217   f  in  FIG. 17  from an arrow mark D direction. According to the invention, there is constructed a constitution in which a hole  201   g  in a window-like shape is opened at a side face of the disk cartridge  217   f  and the side face of a holder arm  213   b  can be seen. Further, the label region  33  is provided at the side face portion of the holder arm  213   b  and by arbitrarily writing information by the user by using the region, information of the disk  4  can easily be determined. Further, there may be constituted a structure in which a transparent sheet member is pasted on the hole  201   g  in a window-like shape such that dust or dirt can be prevented from invading from outside to inside of the disk cartridge and the label region  33  can be recognized. 
   Successively, an explanation will be given of further embodiment in reference to  FIGS. 19A ,  19 B,  19 C,  19 D and  19 E. 
   According to the invention, a recess portion is provided at a label region and/or a region capable of pasting a label. 
     FIG. 19A  is an upper view of a disk holder  215  and  FIG. 19B  is a sectional view taken from a line E—E of FIG.  19 A. According to the example of the invention, a label region and/or a region capable of pasting a label is provided on the upper face of the disk holder. 
   Although the constitution and the function of the disk holder  215  are substantially the same as those of the above-described disk holder  205 , a label region and/or a region  34  capable of pasting a label is formed in a shape recessed by 0.2 mm or more from a face  37  where the regions are provided. When the label  31  is, for example, a paper label, the thickness is about 0.1 through 0.2 mm and accordingly, even when the paper label is pasted on the label region and/or the region  34  capable of pasting a label, the label  31  is not raised in a projected shape in contrast to the face  37  having the label region. Hence, even when the disk holder  215  is locked to a disk cartridge main body, not illustrated, dimensions of outer configuration of the disk cartridge are not changed and accordingly, it can be mounted to a recording and/or reproducing device with no hazard. Further, although according to the embodiment, the label region and/or the region capable of pasting a label is constituted to provide on the upper face of the disk holder  215 , it may be provided on the lower face in accordance with necessity of the user or may be constituted to provide on both faces of upper and lower faces. 
   Further,  FIG. 19C  is a front view of a disk holder  225  and  FIG. 19D  is a sectional view taken from a line F—F of FIG.  19 C. According to the example of the invention, a label region and/or a region  36  capable of pasting a label is constituted to provide on the front face of the disk holder. Although the constitution and the function of the disk holder  225  are substantially the same as those of the above-described disk holder  205 , the label region and/or the region  36  capable of pasting a label is formed in a shape recessed by 0.2 mm or more from a face  38  where the regions are provided. When the label  31  is, for example, a paper label, the thickness is about 0.1 through 0.2 mm and accordingly, even when the paper label is pasted on the label region and/or the region  36  capable of pasting a label, the label  31  is not raised in a projected shape in contrast to the face  38  having the label region. Therefore, even when the disk holder  225  is locked by the disk cartridge main body, not illustrated, dimension of outer configuration of the disk cartridge is not changed and accordingly, the disk holder  225  can be mounted with no hazard to a recording and/or reproducing device. 
   Further,  FIG. 19E  is a side sectional view of an outline of a disk holder  235 . The constitution and the function of the disk holder  235  are substantially the same as those of the above-described disk holder  205  and accordingly, an explanation thereof will be omitted. In this case, label regions and/or the regions  34  and  36  capable of pasting labels are provided on upper faces and a front face of the disk holder  235 . Further, the label regions and/or the regions  34  and  36  capable of pasting labels are formed in shapes recessed by 0.2 mm or more in contrast to the faces  37  and  38  where the regions are installed. 
   An effect thereof is similar to those explained in reference to the above-described  FIGS. 19A ,  19 B,  19 C and  19 D and accordingly, an explanation thereof will be omitted. 
   Further, the recess portions of the regions may be provided at a holder arm portion integrally constituted with the disk holder portion, or may be constituted to provide on side faces of the disk holders or side faces of the holder arms by which a similar effect can be achieved. 
   Although as mentioned above, an explanation has been given of various embodiments, it is commonly constituted that a region representing information of a disk is provided at a disk holder and a disk is moved along with the disk holder and in any cases, there is achieved an effect capable of determining easily the disk by previously writing information of the disk directly to a label region arbitrarily by the user and/or pasting information at the region. 
   By providing a region representing information of a disk at a disk holder, when the disk is moved between disk cartridges, the disk information held by the disk holder can simultaneously be moved and even when the disk enters a disk cartridge, the content of the disk can easily be confirmed via the disk holder. 
   Further, the content of the disk can also be written to or erase from a label region arbitrarily by the user and accordingly, easiness of use can significantly be promoted.