Device for loading a tape-like substance

Abstract: In a device for loading a tape-like substance, in which the tape-like substance (4), such as tape, film or the like paid out of a supply reel (5) is conveyed with air to a take-up reel's side (6) through a duct as a tape path (9) having a peripheral path (9c) provided along the periphery of a guide drum (7), a movable guide (54) for leading the tape-like substance (4) together with the air to the beginning of the peripheral path (9c) is disposed so that it can be smoothly performed to load the tape-like substance (4).

Description: Field of the Invention This invention relates generally to a tape recording and/or reproducing apparatus, and more particularly is directed to a device thereof for loading a tape-like substance, in which the tape-like substance, such as tape, film or the like, is conveyed with air through a duct as a tape path. The device of this invention is best suited for an open reel tape recording and/or reproducing apparatus. Description of the Prior Art In relation to a tape recording and/or reproducing apparatus, various devices for loading a tape-like substance are already known, in which the tape-like substance is automatically conveyed with air (by suction) from a supply-reel's side to a take-up-reel's side through a predetermined tape path, for example, as disclosed in U.S.P. 3,127,120 and U.S.P. 3,334,831. The U.S.P. 4,620,678 discloses a head shield being pivotably movable toward a stationary head to bring a magnetic tape into pressed engagement with the head for a recording or playback mode of operation. However, such a device has been applied to a magnetic recording apparatus having stationary heads and a simple tape path, so that it is difficult to apply such a device to a magnetic recording and/or reproducing apparatus which has a rotary head and a complex tape path including a peripheral path along the periphery of the rotary head. Such a magnetic recording apparatus as to have a rotary durm and an automatic device for loading a tape-like substance by suction, has been disclosed in U.S.P. 3,940,791, U.S.P. 3,938,041 and so forth, but in such an apparatus, a tape is drawn out by suction within airtight casings as illustrated in the drawings of the documents, so that the apparatus is apt to be large. Moreover, it is difficult to apply such a device to a magnetic recording and/or reproducing apparatus having a large angle of contact of a tape with a rotary drum. Thus, such devices as mentioned above are not applied to a magnetic recording and/or reproducing apparatus having a complex tape path for winding the tape-like substance on the periphery of the rotary head at a large angle of contact. OBJECTS AND SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a device for loading a tape-like substance, in which a guide plate is provided in a tape path so as to have the leading end of the tape-like substance conveyed with air within the tape path from the inlet of thereof, and guided firmly to the begining of a peripheral tape path which is disposed along the periphery of a guide drum, so that the tape-like substance is smoothly loaded without any inadvertent trouble. Another object of the invention is to provided a device for loading a tape-like substance, as aforesaid, in which the guide plate is made movable and is removed from the tape path lest the guide plate should interfere with the movement of an entrance guide and an exit guide which are moved when recording on or reproducing from the tape-like substance after tape loading is performed, so that the travel of the tape-like substance is accurately regulated by the entrance and exit guides, because they are firmly moved to predetermined respective positions. Thus, recording on or reproducing from the tape-like substance can be performed with high accuracy, and the device can be applied to a magnetic recording and/or reproducing apparatus having such a complex tape path as to be wound on a rotary head, and a large angle of contact of the tape with the rotary head. A further object of the invention is to provide a device for loading a tape-like substance, in which an entrance guide and an exit guide are moved to three positions: third positions spaced apart sufficient distances from a tape path when the tape-like substance is loaded with air; first positions situated nearest to a guide drum when recording on or reproducing from the tape-like substance is performed; and second positions spaced apart small distances from the guide drum when the tape-like substance is in rewind or fast-forward mode, so that when loaded with air, the tape-like substance can move without any interference of the entrance and exit guides, and loading of the tape-like substance is safely and smoothly performed; when recording on or reproducing from the tape-like substance is performed, the tape-like substance can run accurately along a tape lead provided on the guide drum, and recording or reproducing is performed with high accuracy; and when in rewind or fast-forward mode, the tape-like substance is prevented from receiving damages due to contact with the flange of the entrance guide and so forth, and can run safely and smoothly at high speed. According to an aspect of the present invention, there is provided a device for loading a tape-like substance, in which a guide plate for leading the tape-like substance together with air to the begining of a peripheral path of a tape path which extends along a guide drum, is provided so as to be reciprocatory moved from an active position where the tape-like substance is guided together with the air within the tape path, to a inactive position turned aside from the active position, or vice versa. When the tape-like substance is loaded, the guide plate is located in the active position, and when recording on or reproducing from the tape-like substance is performed, the guide plate is located in the inactive position. Furthermore, there is provided another device for loading a tape-like substance, in which an entrance guide and an exit guide are respectively arranged near the begining and the end of a peripheral path provided midway in a tape path, and extending along a guide drum, so as to have the tape-like substance running helically along the guide drum by the help of a tape lead provided in the periphery of the guide drum after the tape-like substance is loaded, and can be moved by a drive mechanism to a first position situated nearest among all to the guide drum within the tape path, a second position spaced a little more apart from the guide drum than the first position within the tape path, and a third position outside the tape path and largely apart therefrom. BRIEF DESCRIPTION OF THE DRAWINGS Figures 1A and 1B are enlarged front views to show the action of a guide plate included in a device for loading a tape-like substance according to an embodiment of this invention; Figure 2 is a perspective view of the guide plate of Figures 1A and 1B; Figure 3 is a general, front view of the device including the guide plate of Figure 1; Figure 4 is perspective view of the device of Figure 3; Figure 5A to 5C are enlarged front views to show the actions of an entrance guide and an exit guide; Figure 6 is a development viewed in a direction of arrows VI-VI on Figure 5B; Figure 7 is a development viewed in a direction of arrows VII-VII on Figure 5B; and Figure 8 is a partial, enlarged development on Figure 7. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention applied to a device for loading a tape-like substance for an open-reel-type video tape recorder will be hereinafter described with reference to the accompanying drawings. As shown in Figures 3 and 4, a supply reel base 2 and a take-up reel base 3 are arranged to be spaced from each other in the upper right and left positions of the front face 1a of the body 1 of an upright video tape recorder (hereinafter described as VTR), and mounted on the supply reel base 2 and the take-up reel base 3 are a supply reel 5 on which a magnetic tape 4 as a tape-like substance is wound, and a take-up reel 6 for taking up the magnetic tape 4, respectively. Moreover, a rotary head drum 7 as a guide drum is arranged on the front face 1a of the VTR 5 body 1 nearly under the supply reel 5. A tape path 9 formed in the front face 1a of the VTR's body 1 nearly below the supply and take-up reels 5 and 6, has an inlet 9a which is opened near the lower part of the supply reel 5, an outlet 9b which is opened in such a position as to be spaced apart a predetermined distance from the lower part of the take-up reel 6, and a peripheral path 9c of laid U-shape which is provided along the periphery 7a of the rotary head drum 7. Moreover, a supply side path 9d from the inlet 9a to the begining 9f of the peripheral path 9c is of laid U-shape, and a take-up side path 9e from the end 9g of the peripheral path 9c to the outlet 9b gradually rises toward the outlet 9b, so that as a whole, the tape path 9 describes an unsharp curve crooked in zigzag. The tape path 9 is formed like a duct with a front panel 10 attached to the front face 1a of the VTR's body 1, and an openable front cover 11 swingable on hinges 12 which are secured to the VTR's body 1. Note that the front cover 11 is made of transparent synthetic resin, and locked by a locking means (not shown) when closed as indicated in chain-dotted lines in Figures 3 and 4. Moreover, the tape path 9 is lower at the side of the inlet 9a, and higher at the side of the outlet 9b, in order to make the magnetic tape 4 helically wind on the periphery 7a of the rotary head drum 7, so that there is a difference in height between the supply reel 5 and the take-up reel 6, that is, the former is lower than the latter. Arranged along the supply side path 9d of the tape path 9 are a guide post 14, a tension detector 15, a guide roller 16, a full-width erasing head 17, an entrance guide 18 and so forth, and arranged along the take-up side path 9e thereof are an exit guide 19, a tape guide 20, an impedance roller 21, an audio erasing head 22, an audio recording/reproducing head 23, an audio monitoring head 24, a capstan 25, a pinch roller 26, a guide roller 27 and so forth. A plurality of air outlets 29a to 29e are provided along the lower wall of the tape path 9 and connected to one or more blowers 30, 31 through respective air paths 32a to 32e. Moreover, the air inlet 33 of one 31 of the blowers communicates with a plurality of air inlets (not shown) which are provided in the periphery of the hub 6a of the take-up reel 6, so that the leading end 4a of the magnetic tape 4 is attracted by suction to the periphery of the hub 6a to be wound on the take-up reel 6. A sensor 35 arranged at the side of the outlet 9b of the tape path 9, comprises a light emitting element 36 and a photosensor 37 which are respectively disposed on opposite sides of the tape path 9, and light emitted by the light emitting element 36 crosses the tape path 9 and strikes the photosensor 37. Now, the loading operation of the magnetic tape 4 will be hereinafter described. As shown in Figure 3, as soon as the blowers 30 and 31 are put in action, air is blown off from the plurality of air outlets 29a to 29e to the tape path 9 in directions of arrows a to e, and at the same time, air sucked from the periphery of the hub 6a of the take-up reel 6 in a direction of arrow f, flows to the air inlet 33 of the blower 31. After the leading end 4a of the magnetic tape 4 wound on the supply reel 5 is made to be brought near the inlet 9a of the tape path 9, the supply reel 5 is mannally or automatically rotated in a direction of arrow g so as to make the magnetic tape 4 pay out of the supply reel 5. Thus, the magnetic tape 4 is conveyed with air blown off in the directions of arrows a to e from the air outlets, as indicated in solid lines in Figure 3, that is, the magnetic tape 4 is conveyed in a direction of arrow h from the inlet 9a to the outlet 9b through the tape path 9, in turn, through the supply side path 9d, the peripheral path 9c and the take-up side path 9e. When the leading end 4a of the magnetic tape 4 is to reach the outlet 9b of the tape path 9, the leading end 4a intercepts the ray of light 38 emitted by the light emitting element 36, so that the sensor 35 detects the leading end 4a because light does not strike on the photosensor 37. Then, a timer (not shown) is put in action and after a predetermined time, the blower 30 is automatically stopped. During the predetermined time to which the timer is set (strictly speaking, it is necessary to add the time required until the motor of the blower 30 stops, because the motor rotates by inertia even after the electric power is off, the leading end 4a of the magnetic tape 4 is paid out of the tape path 9 through the outlet 9b thereof by a predetermined length in a direction of arrow h′, and as soon as the blower 30 stops, the magnetic tape 4 is not conveyed further with air, because air is not blown off from the air outlets 29a to 29b to the tape path 9. Thus, when the supply reel 5 has been manually rotated in the direction of arrow g, we may stop rotating of the supply reel 5, and when the supply reel 5 has been automatically rotated, the supply reel 5 is automatically stopped. Then, the leading end 4a of the magnetic tape 4 is raised by hand in a direction of arrow i, and firmly wound on the hub 6a of the take-up reel 6 by suction of the blower 31 as indicated in chain-dotted lines in Figure 3. Thereafter, the blower 31 is also stopped. Note that it is not always necessary to wind the leading end 4a of the magnetic tape 4 on the hub 6a of the take-up reel 6 by suction as mentioned above, but the leading end 4a may be engaged the hub 6a by such engaging means as to make the leading end 4a insert into a slit which is provided in the hub 6a, or by other engaging means. Next, when a stand-by button is depressed, the rotary head drum 7 is, firstly, rotated in a direction of arrow j as shown in Figure 3, and then, the tension detector 15, the full-width erasing head 17, the entrance guide 18, the exit guide 19, the tape guide 20 and other movable members are moved from a backward position indicated in dotted lines to a forward position indicated in chain-dotted lines in Figure 3. Thus, the magnetic tape 4 is helically wound at a predetermined angle on the periphery 7a of the rotary head drum 7, and is extended from head or guide to head or guide. Next, when a play button is depressed, the capstan 25 is, firstly, rotated in a direction of arrow k as shown in Figure 3, and then, the magnetic tape 4 is pressed against the capstan 25 by the pinch roller 26, and at the same time, the supply reel 5 and take-up reel 6 are rotated in directions of arrows g and l, respectively. The magnetic tape 4 on a tension runs at constant speed in the direction of arrow h within the tape path 9, and desired recording or reproducing is performed. Memberwhile, if the magnetic tape 4 is inadvertently cut, or completely wound on the take-up reel 6 or the supply reel 5 during recording or reproducing, or fast-forward mode or rewind mode, and thereby, the light 38 emitted by the light emitting element 36 again strikes the photosensor 37, a tape-running stop circuit (not shown), for example, is put in action on a judgement that there is no magnetic tape 4 within the tape path 9, so that the rotary head drum 7 and a system for moving the magnetic tape 4 are automatically stopped. Now, a drive mechanism for driving the entrance guide 18, the exit guide 19 and a guide plate 54 which are provided near the begining 9f and end 9g of the peripheral path 9c of the tape path 9, will be hereinafter described with reference to Figures 1A to 2. The entrance guide 18 and the exit guide 19 are mounted on respective sliders 40a and 40b through respective supporting blocks 18a and 19a, and on the slider 40b, the tape guide 20 is also mounted. The sliders 40a and 40b are reciprocatory in directions of arrows m or m′, and n or n′ along a pair of guide rails 41a and 41b, respectively. The guide rails 41a and 41b are fixed to the front face 1a of the VTR's body 1, and between the guide rails 41a and 41b, a stop 42 for the sliders 40a and 40b projects from the front face 1a. Moreover, a pair of arms 44a and 44b swung on respective fulcrum pins 43a and 43b which project from the front face 1a of the VTR's body 1, are connected to the respective sliders 40a and 40b through rods 46a and 46b surrounded by springs 45a and 45b, and links 47a and 47b connected to the rods 46a and 46b. A driving shaft 49 is rotatably supported by the VTR's body 1 and driven by a geared motor 48. A plate 50 formed integrally with the driving shaft 49 is connected to one 44a of the arms by a link 51, and further, the arm 44a is connected to the other arm 44b by a link 52. In Figure 1A, the guide plate 54 lies near the begining 9f of the peripheral path 9c, and that within a reciprocation path of the supporting block 18a which extends in a direction of arrows m and m′. The guide plate 54 shown in Figure 2 has a U-shaped section comprising a main guide plate 54a as the web-portion thereof and auxiliary guide plates 54b as the flange-portions thereof, and further, an arm 54c projecting from the guide plate 54 is swung in a direction of arrows p and p′ on a fulcrum pin 55 which projects from the VTR′s body 1. Moreover, the guide plate 54 is connected to the arm 44a by a link 56, and the full-width erasing head 17 is secured to an end position of the arm 54c in opposed relation with that of the guide plate 54 with resepect to the fulcrum pin 55, so as to be swingable in the direction of arrows p and p′. Thus, when the magnetic tape 4 is loaded as shown in Figure 1A, the plate 50 is rotated in a direction of arrow o′ by the geared motor 48, so that the entrance and exit guides 18 and 19 and the tape guide 20 are moved in the direction of arrows m′ and n′ to be located at the outside of the tape path 9, and never interfere with conveyance of the magnetic tape 4 in the direction of arrow h within the tape path 9. Moreover, at the time when the magnetic tape 9 is loaded, the guide plate 54 moved in the direction of arrow p, is located in an active position within the tape path 9, and on the contrary, the full-width erasing head 17 is located at the outside of the tape path 9. Thus, the guide plate 54 comprising the main and auxiliary guide plates 54a and 54b, firmly guides the leading end 4a of the magnetic tape 4 conveyed within the tape path 9, to the begining 9f of the peripheral path 9c with air blown off in the direction of arrow c from the air outlet 29e, so that the leading end 4a is smoothly led from the supply side path 9d to the peripheral path 9c. Next, when the stand-by button is depressed as shown in Figure 1B after the magnetic tape 4 is completely loaded, the plate 50 is rotated in a direction of arrow O by the geared motor 48, so that one 44a of the arms is swung in a direction of arrow g through the link 51, and further, the other arm 44b is swung in a direction of arrow r through the link 52. As the result, the sliders 40a and 40b are moved in the directions of arrows m and n by the arms 44a and 44b through the rods 46a and 46b and links 47a and 47b, respectively, so that the entrance and exit guides 18 and 19 and the tape guide 20 are located in forward positions near the periphery 7a of the rotary head drum 7, and at that time, the sliders 40a and 40b are pressed against the stop 42 due to the forces of the springs 45a and 45b, respectively, and locked because the center lines of the links 47a and 47b deviate a little from those of the rods 46a and 46b. Meanwhile, as the guide plate 54 is moved in the direction of arrow p′ by the arm 44a rotated in the direction of arrow q through the link 56, prior to the movement of the slider 40a in the direction of arrow m, the supporting block 18a of the entrance guide 18 moved in the direction of arrow m by the slider 40a, does not inadvertently abut against the guide plate 54. In other words, the guide plate 54 is swung in the direction of arrow p′ without meeting any obstruction by the entrance guide 18 and supporting block 18a which are moved in the direction of arrow m, and located at the outside of the tape path 9, and at the same time, the full-width erasing head 17 is located in the tape path 9. Thus, the magnetic tape 4 is helically wound on the periphery 7a of the rotary head drum 7 with high accuracy at a predetermined angle of contact, and the full-width erasing head 17 comes in contact with the magnetic tape 4, so that recording on, or reproducing from the magnetic tape 4 is performed under the state that the tape running path is accurately regulated with respect to the rotary head drum 7. Now, a drive mechanism of the entrance and exit guides 18 and 19 will be hereinafter described in detail with reference to Figure 5A to 8. As shown in Figure 5A, two sensors 60 and 61 are secured to the front face 1a of the VTR's body 1 in position of point symmetry with respect to the driving shaft 49, and each of them has a light emitting element and a photosensor (not shown). When the light emitted by the light emitting element strikes the photosensor, signal (O) is made, and when the light emitted by the light emitting element can not strike the photosensor due to the obstruction by a shutter, signal (1) is made. In addition, three shutters 62, 63 and 64 are provided on the outer periphery of the plate 50. When the magnetic tape 4 is to be loaded as shown in Figure 5A, the plate 50 is rotated in the direction of arrow o′ by the geared motor 48, and the entrance and exit guides 18 and 19, and the tape guide 20 are moved in the directions of arrows m′ and n′ from near the begining 9f and end 9g of the peripheral path 9c, and the entrance and exit guides 18 and 19 are located in third positions P₃ largely outside the tape path 9 as indicated in two dots-and-dash lines in Figures 6 to 8, and as shown in Figure 5A, it is detected by the sensor 60 making signal (0), and the sensor 61 meeting the obstruction by the shutter 62 and making signal (1), that the entrance and exit guides 18 and 19 are in the third positions P₃, so that the geared motor 48 is stopped. Thus, when the magnetic tape 4 is loaded with air, the entrance and exit guides 18 and 19, and the tape guide 20 do not interfere with conveyance of the magnetic tape 4 to the direction of arrow h at all, so that the magnetic tape 4 is safely and smoothly loaded in the tape path 9. Next, when the stand-by button is depressed after the magnetic tape 4 is completely loaded, the plate 50 is rotated in the direction of arrow o by the geared motor 48 as shown in Figure 5B; the arm 44a is swung in the direction of arrow q by the plate 50 through the link 51; the arm 44b is swung in the direction of arrow r by the arm 44a through the link 52; and the sliders 40a and 40b are moved in the directions of arrows m and n by the arms 44a and 44b through the rods 46a and 46b, and the links 47a and 47b, respectively, so that the entrance and exit guides 18 and 19 are located in first positions P₁ very adjacent to the periphery 7a of the rotary head drum 7 as indicated in solid lines in Figures 6 to 8, and also the tape guide 20 is located near the periphery 7a of the rotary head drum 7. Moreover, it is detected, as shown in Figure 5B, by the sensor 61 making signal (0), and the sensor 60 meeting the obstruction by the shutter 62 and making signal (1), that the entrance and exit guides are in the first positions P₁, so that the geared motor 48 is stopped. Note that at that time, the sliders 40a and 40b are pressed against the stopper 42 due to the forces of the springs 45a and 45b, respectively and locked because the center lines of the links 47a and 47b deviate a little those of the rods 46a and 46b. Thus, as shown in Figures 6 to 8, the magnetic tape 4 is helically wound with high accuracy on the periphery 7a of the rotary head drum 7 at a predetermined angle of contact along a tape lead 65. Note that the rotary head drum 7 comprises an upper rotary drum 7b and a lower stationary drum 7c, and the tape lead 65 is formed in the periphery of the lower stationary drum 7c. When the play button is thereafter depressed, the magnetic tape 4 led with high accuracy by the tape lead 65 runs at constant speed along the periphery 7a of the rotary head drum 7, so that recording on or reproducing from the magnetic tape 4 is accurately performed. Next, when the rewind button or fast-forward button is depressed, the plate 50 is rotated a little in the direction of arrow o′ by the geared motor 48 as shown in Figure 5C; the arm 44a is swung a little in a direction of arrow q′ by the plate 50 through the link 51; the arm 44b is swung a little in a direction of arrow r′ by the arm 44a through the link 52; and the sliders 40a and 40b are moved a little in the directions of arrows m′ and n′ by the arms 44a and 44b through the rods 46a and 46b, and the link 47a and 47b, respectively, so that the entrance and exit guides 18 and 19 are located in second positions P₂ within the tape path 9 so as to be spaced a little more apart from the periphery 7a of the rotary head drum 7 than the first positions P₁ as indicated in chain-dotted lines in Figures 6 to 8, and also the tape guide 20 is located within the tape path 9. At that time, the status of the entrance and exit guides 18 and 19 located in the second positions P₂, is detected by the sensors 60 and 61 which meet the respective obstructions by the shutters 63 and 64 to make signals (1), so that the geared motor 48 is stopped. In the embodiment, as shown in Figure 8, the distance l₁ between the first position P₁ and the third position P₃ is about 44 mm, and the distance l₂ between the first position P₁ and the second position P₂ is about 10 mm. In addition, when the entrance guide 18 is moved to the third position P₃, the upper edge 4b of the magnetic tape 4 which becomes free from the entrance guide 18, rises to a position indicated in dotted lines in Figure 8, and displacement H of the upper edge 46 caused thereby as shown in Figure 8 is 20 to 30 mm. Thus, angle α₁ made by the upper flange 18b of the entrance guide 18 in the first position P₁ with the upper edge 4b of the magnetic tape 4 is larger enough than angle α₂ made by the upper flange 18b of the entrance guide 18 in the second position P₂ with the upper edge 4b of the magnetic tape 4, so that the magnetic tape 4 which runs at high speed, does not run on the upper flange 18b of the entrance guide 18, and does not suffer any damage. According to the above device for loading the tape-like substance, the guide plate 54 guides the magnetic tape 4 together with the air to the begining 9f of the peripheral path 9c, so that the leading end 4a of the magnetic tape 4 conveyed from the inlet 9a of the tape path 9 is firmly led to the peripheral path 9c. Moreover, the guide plate 54 does not interfere with the movement of the entrance guide 18 at the time when recording on or reproducing from the magnetic tape 4 is performed, because the mobile guide plate 54 is moved to the outside of the tape path 9 beforehand. According to the another device of the invention, the entrance and exit guides 18 and 19 are located in the three positions: the third positions P₃ outside the tape path 9 when the magnetic tape 4 is loaded; the first positions P₁ situated nearest among all to the guide drum 7 when recording on, or reproducing from the magnetic tape 4 is performed; and the second positions P₂ spaced a little apart from the guide drum 7 when the magnetic tape 4 is in rewind mode or fast-forward mode.

Claims: A device for loading a tape-like substance (4) comprising: a supply reel (5); a take-up reel (6); a guide drum (7) having rotary heads; a tape path (9) from an inlet (9a) provided at the supply-reel's side to an outlet (9b) provided at the take-up reel's side via a peripheral path (9c) extending along the periphery of the guide drum (7); a plurality of air outlets (29) provided along the tape path (9); and at least one blower (30, 31) for blowing off air from the plurality of air outlets (29) into the tape path (9), wherein the tape-like substance (4) paid out of the supply reel (5) is conveyed with the air blown off from the plurality of air outlets (29), from the inlet (9a) of the tape path (9) to the outlet (9b) thereof through the peripheral path (9c) extending along the periphery of the guide drum (7), the device being characterized by: a guide plate (54) for leading said tape-like substance (4) together with the air to the beginning of said peripheral path (9c) of the tape path; a first drive mechanism for moving said guide plate (54) from an active position to an inactive position, or vice versa, said guide plate (54) in said active position leading said tape-like substance (4) together with the air to the beginning (9f) of said peripheral path (9c) of the tape path (9) when said tape-like substance (4) is loaded, and said guide plate (54) in said inactive position not interfering with movement of said tape-like substance (4) when said tape-like substance (4) is put in action. A device according to claim 1, characterized in that a pair of tape guides (18, 19) for regulating a state of said tape-like substance (4) wound on said guide drum (7), and a second drive mechanism for moving said pair of tape guides (18, 19) are provided, said second drive mechanism moving said pair of tape guides (18, 19) to unregulatory positions where said tape-like substance (4) is unwound from said guide drum (7) when said tape-like substance (4) is loaded, and to regulatory positions where said tape-like substance (4) is wound on said guide drum (7) at a predetermined angle of contact when said tape-like substance (4) is put in action, and further, said two drive mechanisms for moving said pair of tape guides (18, 19) and said guide plate (54) being interlocked with each other. A device according to claim 2, characterized in that said unregulatory positions of the tape guides (18, 19) which are moved by said second drive mechanism, comprise first unregulatory positions spaced apart from said guide drum (7) so as to make said tape-like substance (4) load easily at the time of tape loading, and second unregulatory positions situated between said first unregulatory positions and said regulatory positions, and capable of partially unwinding said tape-like substance (4) wound on said guide drum (7). A device according to any one of claims 1 to 3, characterized in that said guide plate (54) is disposed between said peripheral path (9c) and one (29c) of said air outlets (29) positioned nearest to said peripheral path (9c). A device according to any one of claims 1 to 4, characterized in that said guide plate (54) has a lower plate (54c) capable of connecting with the lower wall (1a) of said tape path (9), and a side plate (54b) which makes a right angle with said lower plate (54c). A device according to any one of claims 1 to 5, characterized in that said guide plate (54) is formed integrally with a stationary head (17), past which said tape-like substance (4) is advanced. A device according to any one of claims 3 to 6, characterized in that said pair of tape guides (18,19) is provided for regulating the angle of contact of said tape-like substance (4) wound on said rotary drum (7), and in that said first unregulatory positions (P3) are located largely outside the tape path (9), that said regulatory positions (P1) are located very adjacent to said rotary drum (7), and that the distance of said second unregulatory positions (P2) situated between said regulatory positions and said first unregulatory positions (P3) to said regulatory positions (P1) is smaller than the distance to said first unregulatory positions (P3).

Inventors: CHINO HISAYOSHI, HANATANI SHINJI, SUGIYAMA YOSHIAKI, CHINO, HISAYOSHI, HANATANI, SHINJI, SUGIYAMA, YOSHIAKI
Applicants: SONY CORP, SONY CORPORATION
Application year: 1988
Main classification: G11B15
IPC codes: G11B15