JPH07312057A - Tape cartridge - Google Patents

Abstract

(57) [Abstract] [Purpose] In a tape cartridge in which the tape can be pulled out to the outside of the cartridge,
When wrapping around 4b, air between the tape layers is removed to improve the tape winding shape, damage to the tape is prevented, dust etc. adhering to the tape surface is removed, and error rate and dropout are increased. Suppress. [Structure] A pair of reels 4a, 4 rotatably supported
The tape 5 is wound between b and the reel 4 of the tape 5
The tape 5 is wound while the stretchable belt 9 is brought into contact with the portions 5a and 5b wound between a and 4b, respectively, and air between layers of the tape 5 is extruded. As the belt 9, a stretchable fiber knitted material such as polyester or polyurethane is used as an example.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape cartridge, and more particularly to a tape cartridge for accommodating a magnetic tape capable of recording and reproducing information such as CPU data, music and video.

[0002]

2. Description of the Related Art In recent years, thin tapes have been used in parallel 2-reel type tape cartridges such as video tapes in order to enable long-time recording. However, when a thin tape having a thickness of 15 μm or less is fast-forwarded and rewound at high speed, an air layer is formed between the layers of the tape wound on the reel. Therefore, there is a problem that the tape slides in the width direction, the tape rubs against the housing of the tape cartridge, and the edge of the tape is damaged. Further, when the tape protrudes from the reel in the width direction, the edge of the tape rubs against the housing when the tape is drawn, and the drawing load becomes very large.

Further, if dust generated due to scraping of the tape edge or dust in the air adheres to the recording surface of the tape, signal recording / reproduction failure occurs. In particular, the higher the recording density, the greater the effect of dust adhesion, and when the tape is repeatedly run, the error rate will significantly deteriorate,
There is a problem that dropouts increase.

As a tape cartridge for performing high-density recording / reproduction using such a thin tape, for example, Japanese Patent Publication No. 52-14976 (or US Pat.
92,255) (hereinafter referred to as Conventional Example 1) and those described in JP-A-3-207072 (or US Pat. No. 5,081,555) (hereinafter referred to as Conventional Example). 2) is known.

(Conventional Example 1) First, a tape cartridge of Conventional Example 1 will be described with reference to FIG. In the conventional example 1, the reel is free without engaging with the drive mechanism,
The present invention relates to a tape cartridge of a type that runs a tape by driving a belt. As shown in FIG. 13, the cartridge 101 includes a metal base plate 102 such as an aluminum plate and a thin box-shaped synthetic resin upper cover 103. The upper cover 103 is fixed to the base plate 102 by screws or the like. It is fixed. A pair of left and right reels 104 are rotatably supported on the base plate 102, and a magnetic tape 105 is wound between the reels 104. The tape 105 is a pair of left and right tape guides 10 provided on the base plate 102.
It is guided by 6 and hangs along the inside of the front wall 103b. A belt drive roller 107 is rotatably supported on the center of the front side of the base plate 102. A pair of left and right belt guide rollers 108 are rotatably supported at the left and right ends on the rear side of the base plate 102. An elastic belt 109 is provided between the belt driving roller 107 and both belt guide rollers 108.
However, it is wound in a substantially T shape with a strong tension of 1.6 N or more. Part of the belt 109 is both reels 104
A pair of tape winding parts 1 of the tape 105 wound around
It is pressed against the outer periphery of 05a.

When the tape cartridge 101 is mounted on a recording / reproducing device (not shown), a door 111 rotatably supported between a base plate 102 and an upper cover 103 is shown in FIG.
Rotate in the direction indicated by arrow A to the position indicated by the dashed line.
Therefore, the notch 110 formed at one end on the front surface side of the base plate 102 and the upper cover 103 is opened. Then, the magnetic head 112 provided in the recording / reproducing apparatus is inserted into the notch 110 and comes into contact with the recording surface of the tape 105. At the same time, the drive roller 1 provided in the recording / reproducing apparatus
13 is inserted into the opening 114 provided in the upper cover 103, and the belt winding surface 107 of the belt driving roller 107 is
It is pressure-bonded to the outer peripheral portion of the large-diameter roller portion 107b integrally formed on the upper part of a. Then, by the rotation of the drive roller 113, the belt drive roller 107 is rotationally driven, for example, in a direction indicated by an arrow B in the drawing. Therefore, the belt 109 is driven in the direction indicated by the arrow c. The tape winding unit 10 wound around both reels 104 by driving the belt 109.
5a is driven to rotate in the direction indicated by the arrow D in the drawing, and the tape 1
05 is 25 to 120 inches / in a direction indicated by an arrow e in the drawing.
It is driven at a relatively fast speed of 2 seconds. At that time, recording / reproducing is performed on the recording surface of the tape 105 by the magnetic head 112.

(Conventional Example 2) Next, a tape cartridge of Conventional Example 2 will be described with reference to FIG. 14 or FIG. Conventional Example 2 mainly relates to a compact cassette for music, and its purpose is to remove dust adhering to the recording surface of a magnetic tape. As shown in FIG. 14 or FIG. 15, a pair of left and right reels 204 are rotatably supported on the base member 202.
A magnetic tape 205 is wound between them. Tape 20
5 is guided by a pair of left and right tape guides 206 provided on the base member 202, and is laid along the inside of the opening 202a. In addition, a ring-shaped or substantially V-shaped flexible strip 207 is provided on the rear center of the base member 202. Flexible strip 2
The outer peripheral surface of 07 contacts the recording surfaces of the portions 205a and 205b of the tape 205 wound around the two reels 204a and 204b, respectively. The flexible strip 207 is
For example, it is made of an elastic material such as PTFE (polytetrafluoroethylene). On the surface of the flexible strip 207 that contacts the recording surface of the tape 205, a cleaning layer made of, for example, non-woven fabric or paper is formed.

Generally, in the tape cartridges 101 and 201 of the conventional example 1 and the conventional example 2, the recording surfaces of the tapes 105 and 205 are held by the belt 109 or the flexible strip 207 while the tape is running. Is configured. Therefore, while removing air, the tape 105, 2
It is contemplated that 05 may be wound on reels 104, 204a, 204b. In that case, even if the tape is fast forwarded at a relatively high speed, the tapes 105 and 205 do not slip out in the width direction and can be wound in a stable state. Further, dust and the like adhering to the tape are scraped off by the belt 109, the flexible strip 207, etc., so that an error rate, dropout, etc. are suppressed.

[0009]

By the way, in order to achieve high density recording, it is necessary to record and reproduce a signal of a relatively high frequency with high density. Therefore, in general,
A rotary head method is used in which a tape is pulled out from a trig and wound around a rotating head drum to record / reproduce. However, in the tape cartridge of Conventional Example 1, since the tape is driven by the belt, the friction coefficient between the tape and the belt is high, and the load due to the tension of the belt is large. Therefore, when the tape cartridge 101 of Conventional Example 1 is used, a large pull-out torque is required to pull out the tape 105 from the cartridge housing, and recording is performed by a general rotary head system such as a video tape recorder or a computer data storage. It has a problem that it cannot be used for a reproducing apparatus. In addition, especially in the case of thin tapes that dislike the occurrence of an air layer between tapes when wound on a reel, if you try to forcibly pull out the tape against the load,
There is a problem that the tape is stretched or the tape is cut.

Further, the tape cartridge 20 of the conventional example 2
In No. 1, the flexible strip 207 is formed of a resin material such as PTFE, but these materials have elasticity but not elasticity. That is, the entire circumference of the ring-shaped flexible strip 207 does not extend and is constant. Therefore, when the diameter of the tape portion wound on the reels 204a and 204b changes, the flexible strip 207 also deforms accordingly, but does not undergo a large deformation such as elongation. As the tape 205 travels, the diameter of the tape portion 205a wound on one reel 204a gradually increases, and the diameter of the tape portion 205b of the other reel 204b gradually decreases. It is considered to move between the two reels 204a and 204b.

By the way, since the tape 205 travels at a constant speed, the tape portion 2 wound around the reel 204b.
In the range where the diameter of 05b is small, its curvature changes rapidly. Therefore, the movement and deformation of the flexible strip 207 cannot follow the change in the diameter of the tape portions 205a and 205b wound on the reels 204a and 204b, and the flexible strip 207 is wound on the reels 204a and 204b. In some cases, the tape portions 205a and 205b cannot be contacted. Therefore, in that case, the air between the layers of the wound tape portions 205a and 205b cannot be removed, and the tape 205 slips out in the width direction and cannot be wound in a stable state. Had. Further, there is a problem that dust and the like adhering to the recording surface of the tape 205 cannot be scraped off and an error rate and dropout cannot be suppressed.

On the other hand, still life is one of the performances required for a magnetic tape which is repeatedly recorded and reproduced.
Still Life is a tape that is loaded on a rotating head to output a still image on a video deck.
This is the durability of the tape when it is reproduced while the running is stopped. Still life is important especially when performing video editing work in a broadcasting station, and it is necessary to endure it for a long time. Further, in a home video tape recorder, a music recording / reproducing apparatus, and the like, a method of stopping the tape running in a loaded state is often used for smooth access. Therefore, still life is very important even if it is placed in household appliances.

In order to improve the still life, in order to improve the slippage between the magnetic layer of the tape and the magnetic head, it has been customary to add or apply a lubricant such as fatty acid to the magnetic layer. The greater the amount of lubricant, the better the sliding of the coating film on the magnetic head. However, the coating film strength is greatly affected by the amount of the lubricant, and if the amount of the lubricant is increased too much, the coating film strength is decreased, and a predetermined still life cannot be secured. It is also possible to apply a lubricant after the formation of the magnetic layer of the tape is completed so as not to reduce the strength of the coating film. However, the lubricant must be applied by dissolving it in an organic solvent or the like. In this case, the magnetic layer is eroded by the organic solvent, the strength of the coating film is lowered, and a predetermined still life cannot be achieved.

Further, since the position of the reel base of the recording / reproducing apparatus varies, the reel of the parallel two-reel type cartridge is not fixed to the cartridge so that the reel is easily engaged with the reel base. It has a lot of play. For this reason, the reel moves at a very large acceleration due to vibration during transportation, shock caused by accidental drop, etc.
There is a problem that the tape is pulled suddenly (especially on a reel on which a lot of tape is wound) and the tape is damaged. This phenomenon is remarkable especially in thin tapes. There is also a problem in that the tape becomes loose due to vibration during transportation and causes a loading failure when loading.

The present invention has been made in order to solve the above-mentioned conventional problems, and winds the tape around the reel while removing air between the tape layers, and smoothly pulls the tape out of the cartridge. The purpose is to provide a possible tape cartridge. Also,
The present invention removes air between the tape layers and suppresses the increase of the error rate between the tape layers in order to prevent the occurrence of dropout during information recording / reproduction and to suppress the increase in the error rate even after the tape is repeatedly fast forwarded and rewound many times. The purpose is to improve the reliability of the performance of removing dust adhering to the recording surface.

[0016]

To achieve the above object, a tape cartridge of the present invention is wound between a pair of reels rotatably supported on a base member and the pair of reels. A tape that can be drawn out from the front side of the base member, a tape guide member that is provided on the base member and that defines a traveling path of the tape, and a portion of the tape that is wound around the pair of reels. A belt that is in constant contact with the outer peripheral surface and that deforms according to changes in the outer diameter of the portion wound on each of the pair of reels and that has smoothness, elasticity, and elasticity, and a predetermined position on the base member. And at least three belt guide members for guiding the belt.

In the above structure, it is preferable that the belt has a closed loop shape, and the belt guide member is provided at least in the vicinity of a central portion on the front side and in the vicinity of both end portions on the rear side of the base member. Alternatively, the belt has a closed loop shape, and the belt guide member has at least 4
It is preferable that two are provided on each of the front side and the rear side between the pair of reels on the base member. Alternatively, in the above configuration, the belt has a ribbon shape with both ends open, and the belt guide member is provided at least in the vicinity of the front center part and the rear end parts of the base member, and both ends of the belt member are provided. Is preferably fixed to a belt guide member provided near both rear ends of the base member.

Further, in each of the above structures, it is preferable that at least one of the belt guide members is a roller rotatably supported. Further, it is preferable that the roller is crowned so that the diameter of the central portion is larger than the diameter of both end portions. Alternatively, it is preferable that the roller has a collar. Further, the tolerance of the roller in the width direction of the belt is preferably 0.5 mm or less. Alternatively, at least one of the belt guides is preferably a fixed shaft.

Further, in each of the above constructions, it is preferable that the entrance angle and the exit angle of the belt are substantially the same as the tangential direction of the winding core with respect to the winding core of the reel in which the tape is not wound. Further, it is preferable that a reel lock mechanism is rotatably supported on the base member and does not interfere with the belt spatially.

Further, in each of the above constructions, it is preferable that the tape guide member is a roller rotatably supported. Further, it is preferable that the roller is crowned so that the diameter of the central portion is larger than the diameter of both end portions. Alternatively, it is preferable that the roller has a collar. Further, the tolerance of the roller in the width direction of the belt is preferably 0.5 mm or less. Alternatively, the tape guide is preferably a fixed shaft.

In each of the above constitutions, the material of the belt is preferably selected from a woven fabric of fibers, a knitted fabric of fibers, and a non-woven fabric. Further, it is preferable that the belt is impregnated with a lubricant. Further, the friction coefficient between the belt and the tape is preferably 0.7 or less. Further, the tension of the belt is preferably 3 N or less. Further, it is preferable that the end face in the width direction of the belt is thermally melted. Alternatively, it is preferable that the belt is coated with a resin.

On the other hand, another tape cartridge of the present invention is wound between a pair of reels rotatably supported on a base member and the pair of reels, and is drawn out from the front side of the base member to the outside. And a tape guide member provided on the base member for defining a traveling path of the tape, and provided between the pair of reels on the base member and wound around the pair of reels of the tape. Pressing provided at the tip of two leaf-spring-shaped arms that are in constant contact with the outer peripheral surfaces of the taken-up portions and that rotate in accordance with changes in the outer diameter of the wound portions of the pair of reels. And a roller.

In the above structure, the tolerance of the pressing roller in the tape width direction is preferably 0.5 mm or less. Further, it is preferable that an end portion of the pressing roller in the width direction of the tape is chamfered in an arc shape. Further, it is preferable that the pressing roller has a rotation resistance. Further, it is preferable that the pressing roller has an adhesive property.
Further, the tape pressing force of the pressing roller is preferably 1 N or less. Further, it is preferable that the pressing roller is impregnated with a lubricant.

[0024]

According to the tape cartridge of the present invention constructed as described above, the tape is wound around the reel while being held by the belt, so that the tape can be wound while removing air between the tape layers. Therefore, even when the tape moving speed is high, the tape portion wound around the reel does not slip or protrude in the width direction orthogonal to the tape running direction. Therefore, the tape is wound on the reel in a stable state. Further, since the tape is stably wound in the width direction, the edge of the tape does not rub against the bottom surface of the base member or the like. Therefore, even if a thin tape is used, the durability will not be deteriorated due to tape damage or the like. Further, since the belt is constantly in contact with the surface (recording surface) of the tape, it is possible to remove dust and the like adhering to the surface of the tape. Therefore, it is possible to significantly reduce the error rate and the occurrence of dropout. Further, since the belt has smoothness, elasticity and stretchability, the load of the belt can be kept substantially constant while the tape is running, and the pull-out load when pulling out the tape from the tape cartridge can be reduced. . As a result, the tape cartridge can be used in a rotary head type recording / reproducing apparatus, and a signal of a relatively high frequency can be recorded / reproduced with high density.

Further, by forming the belt in a closed loop shape and providing the belt guide member at least in the vicinity of the central portion on the front side and in the vicinity of both end portions on the rear side of the base member, the belt runs due to the frictional force between the belt and the tape. Drive along with. Therefore, the pull-out load when pulling out the tape from the tape cartridge can be further reduced.

Alternatively, by forming the belt in a closed loop shape and providing at least four belt guide members and two belt guide members on the front side and two on the rear side between the pair of reels on the base member, the rear left and right end portions of the tape cartridge are formed. A space is generated in the vicinity, and another mechanism such as a reel lock mechanism can be provided.

Alternatively, the belt is in the form of a ribbon with both ends open, and the belt guide members are provided at least near the center of the front side of the base member and near the both ends of the rear side thereof, and the both ends of the belt member are the both ends of the rear side of the base member. By fixing to a belt guide member provided in the vicinity, the belt can be provided even in a narrow space, and the tape cartridge can be downsized.

Further, by using at least one of the belt guide members as a roller rotatably supported, the belt can easily and smoothly follow the running of the tape. It is possible to reduce the tape running or pulling load due to friction between the tape and the tape.

Further, the rollers may be crowned so that the diameter of the central portion is larger than the diameters of the both ends, or the rollers may be provided with a collar, so that the belt runs in the width direction orthogonal to the running direction of the belt. The route stabilizes. As a result, fast-forwarding and rewinding of the tape can be performed stably and smoothly, and the tape can be wound in a stable state without slipping or protruding in the width direction.

Further, by setting the tolerance of the rollers in the width direction of the belt to 0.5 mm or less, the width of the vertical movement of the belt in the width direction of the belt is restricted within a certain range, and the running path of the belt in the width direction is limited. Stabilize. As a result, the width of the load fluctuation of the tape running or pulling out becomes small, and the tape running becomes stable and smooth. The tape does not slip or stick out in the width direction, and the tape is wound in a stable state.

Alternatively, by using at least one of the belt guides as a fixed shaft, it is possible to deal with a small tape cartridge having no space for providing a belt for the belt guide and to reduce the cost.

Further, the belt is wound around the reel core by making the entrance angle and the exit angle of the belt substantially coincide with the tangential direction of the core with respect to the core of the reel in which the tape is not wound. The angle can be minimized, and the tape drawing load can be reduced.

Further, by providing a reel lock mechanism that is rotatably supported on the base member and does not interfere with the space of the belt, the tape cartridge is carelessly loaded when the tape cartridge is not mounted in the recording / reproducing apparatus or the like. It is possible to prevent the tape from being pulled out and the tape from sagging.

Further, by making the tape guide member a roller which is rotatably supported, the friction between the tape and the tape guide member is reduced, and the load when the tape is running and when it is being pulled out is reduced.

Further, by crowning the roller so that the diameter of the center portion is larger than the diameters of both end portions, or by providing the roller with a collar, the running path of the tape in the width direction of the tape is stabilized, The tape does not slip in the width direction or stick out, and it can be wound in a stable state, improving the winding appearance of the tape.

Further, by setting the tolerance of the roller in the width direction of the belt to 0.5 mm or less, the width of vertical movement of the tape in the width direction of the tape is restricted within a certain range, and fluctuations in tape running or drawing load are prevented. Can be made smaller. As a result, the tape running is stable, the tape does not slip in the width direction and does not stick out, and the tape can be wound in a stable state, and the winding shape of the tape is improved.

Alternatively, by using the fixed shaft fixed to the base member as the tape guide, it is possible to cope with a small tape cartridge having no space for providing a roller for the tape guide, and it is possible to reduce the cost. it can.

Further, when the belt material is at least one selected from a woven fabric of fibers, a knitted fabric of fibers, and a non-woven fabric, the belt can easily slide on the surface of the tape without damaging the surface of the tape. The tape can be wound on the reel while bleeding air.

Further, by impregnating the belt with a lubricant, the lubricant is transferred to the surface (magnetic surface) of the tape when the tape is running, and the still life performance of the tape is improved without lowering the coating strength of the tape. It can be greatly improved.

By setting the coefficient of friction between the belt and the tape to be 0.7 or less, the belt slides smoothly on the surface of the tape, so that even when the tape speed is high,
The tape can be wound on the reel in a stable state, and the still life performance of the tape can be significantly improved.

By setting the tension of the belt to 3 N or less, the belt can be smoothly expanded and contracted in accordance with the change in the diameter of the tape portion wound around the reel.

Further, the end face in the width direction of the belt is heat-melted,
Or, by coating the belt with resin,
The end face of the belt is protected, fraying can be prevented, and the durability of the belt is improved.

On the other hand, according to another tape cartridge of the present invention, since the tape is wound around the reel while being pressed by the pressing roller, the air between the tape layers wound around the reel can be removed. Therefore, even when the tape traveling speed is high, the tape portion wound around the reel does not slip or protrude in the width direction. As a result, the tape is wound in a stable state. Further, since the tape is stably wound in the width direction, the edge of the tape does not rub against the base member. Therefore, even when a thin tape is used, the durability of the tape is not deteriorated due to the damage of the tape or the like. Further, since the pressing roller is constantly in contact with the surface (recording surface) of the tape, it is possible to remove dust and the like adhering to the tape surface. As a result, the error rate and the occurrence of dropout can be significantly reduced. Further, since the pressing roller is rotatable, it does not damage the surface of the tape while the tape is running. Further, the load of the pressing member can be kept substantially constant while the tape is running, and the pull-out load when pulling out the tape from the tape cartridge can be reduced. As a result, it can be used in a rotary head type recording / reproducing apparatus, and a signal of a relatively high frequency can be recorded / reproduced with high density.

By setting the tolerance of the pressure roller in the tape width direction to 0.5 mm or less, the vertical movement of the pressure roller in the width direction of the tape can be pressed within a certain range.
It is possible to prevent the tape from slipping in the width direction and protruding from the reel.

Further, the tape can be wound on the reel without being damaged by the roller by chamfering the end of the pressing roller in the width direction of the tape in an arc shape.

Further, by providing the pressing roller with rotation resistance, the pressing roller can roll while slightly sliding on the tape. Therefore, it is possible to remove dust and the like adhering to the tape surface, and it is possible to significantly reduce the error rate and the occurrence of dropout.

Alternatively, by providing the pressure roller with adhesiveness, when the pressure roller rolls on the tape, dust and the like adhering to the surface of the tape are adsorbed and removed by the pressure roller, so that an error rate and dropout are caused. Can be significantly reduced.

By setting the tape pressing force of the pressing roller to 1 N or less, the tape can be smoothly run without being caught by the pressing force of the pressing roller.

Further, by impregnating the pressure roller with a lubricant, the lubricant is transferred onto the recording surface (magnetic surface) of the tape when the tape is running, and the still life performance is improved without lowering the coating strength of the tape. It can be greatly improved.

[0050]

【Example】

(First Embodiment) A first embodiment of the tape cartridge of the present invention will be described with reference to FIGS. Figure 1 is the first
3 is a perspective view showing a state in which the upper cover of the tape cartridge of the embodiment is removed, and FIG. 2 is a plan view thereof. Further, FIG. 3A is a perspective view showing the shape of the belt 9,
(B) is a partial enlarged view showing the details. The first embodiment is intended to improve the winding appearance of the tape by removing air between the tape layers of the tape portion wound around the reel by using a belt which is always in contact with the tape surface.

As shown in FIGS. 1 and 2, the tape cartridge of the first embodiment has a base member 15 and a pair of reels 4a and 4b rotatably supported on the base member 15. Two sets of tape guides 6 provided near the left and right ends of the front side 15a of the base member 15, and three belt guide rollers 16a and 16b provided near the center of the base member 15 and near the left and right ends of the rear side 15b. And 16c
And a closed loop belt 9 guided by belt guide rollers 16a, 16b and 16c.
A tape 5 having a thickness of 12 μm, for example, is wound between the reels 4a and 4b with the magnetic recording surface facing outside. Also,
The tape 5 has an opening 1 on the front side 15a of the base member 15.
It is guided by the tape guide 6 so as to extend along 5c. The belt 9 functions as a pressing member, and the portion 5 of the tape 5 wound around each reel 4a, 4b.
a, 5b, and tape parts 5a, 5b on reel 4
It is pressed in the central axis direction of a and 4b.

1 and 2 show a state in which most of the tape 5 is wound around one reel 4a and almost not wound around the other reel 4b. At this time, the belt 9 is the portion 5 of the tape 5 wound around the reel 4b.
The line b is almost in line contact. On the other hand, the belt 9 is a portion 5 of the tape 5 wound around the reel 4a.
Surface contact with a is made over approximately 1/3 of the circumference. As the tape 5 is wound around the reels 4a to 4b, the contact area between the belt 9 and the portion 5b wound around the reel 4b increases, and the belt 9 and the portion 4a wound around the reel 4a increase.
The contact area with and decreases, and finally the state opposite to that shown in the figure is reached. While the tape 5 is fast-forwarded and rewound, the friction force between the tape 5 and the belt 9 causes the belt 9 to run in the same direction as the tape running direction. At the same time, the portion 5a of the tape 5 wound around the reels 4a and 4b,
The belt 9 is greatly deformed by expansion and contraction according to the change in the diameter of 5b. Therefore, elasticity and stretchability are required as the material of the belt 9. Such elasticity of the belt 9 is also required when assembling the tape cartridge.

Further, the tape cartridge is a rotary head type recording / reproducing apparatus (not shown) such as a video tape recorder.
When the tape 5 is mounted on, the tape 5 is pulled out from the tape cartridge and wound around the rotary head drum. Therefore, the material of the belt 9 is required to have smoothness that allows the tape 5 to slide. The belt 9 is, for example, as shown in FIG.
It is a knitted fabric of fibers as shown in (b). In order to improve the slip between the tape 5 and the belt 9, it is necessary to suppress the friction coefficient to 0.7 or less, particularly preferably 0.5 or less. In order to satisfy this condition, the fiber itself of the material of the belt 9 is
For example, fluorine fiber, nylon fiber, polyurethane fiber,
It is preferable to select from those having a low friction coefficient such as rayon fibers and fibers containing carbon. Alternatively, a polyester resin or the like may be coated with a fluorine resin or a silicone resin. Further, in order to prevent the tape 5 and the belt 9 from adhering to each other due to static electricity, it is necessary to reduce the surface electric resistance of the belt 9. Therefore, it is preferable to coat the surface of the fiber with a material containing a conductive resin. Further, by heat-welding the end portion of the belt 9 in the width direction, or by coating the surface of the belt 9 with a resin,
It is possible to prevent the fibers from fraying. Also, reel 4
In order to reduce the friction between the tape 5 and the belt 9 when pulling out the tape 5 from the tape cartridge without impairing the effect of removing the air between the tape layers wound around a and 4b, the tension of the belt 9 is 3N or less, Particularly preferably, it is adjusted to 1N or less.

In FIGS. 1 and 2, as the tape guide 6, a roller whose diameter is uniform in each portion is used.
On the other hand, the belt guide rollers 16a, 16b, 16c are crowned so that the diameter of the central portion is larger than the diameter of both end portions. As the crown roller, for example, one shown in FIG. 16 was used. In FIG. 16, the diameter of the end portion A of the roller was 4.8 mm, and the diameter of the central portion B was 5.0 mm. The height H is 14 mm
Met. The reason why the tape guide 6 is not crowned is that most of the tape running path is determined mainly by the tape guide roller of the recording / reproducing apparatus in which the tape cartridge is mounted. This is because the tape guide 6 does not contribute much as a guide for the running of the tape 5 when it is mounted on the tape. On the other hand, the traveling path of the belt is determined only by the belt guide rollers 16a, 16b, 16c. Therefore, in order to smoothly and stably run the belt 9, the belt guide rollers 16a, 16b,
It is necessary to crown 16c.

The tolerance (play) of the roller for the tape guide 6 in the width direction orthogonal to the tape running direction is 0.5 mm or less,
In particular, it should be 0.2 mm or less. Thereby, the vertical movement of the tape 5 in the width direction can be limited to a certain narrow range,
It is possible to reduce the fluctuation of the running load or the drawing load of the tape 5. Similarly, the belt guide roller 16a,
The tolerance (play) of 16b and 16c in the width direction orthogonal to the belt running direction is 0.5 mm or less, particularly 0.2 mm or less. As a result, the vertical movement of the belt 9 in the width direction can be limited to a certain narrow range, and the fluctuation of the tape running load due to the friction between the tape 5 and the belt 9 can be reduced. An example of the material of the belt 9 actually used is shown below.

Fiber: Polyester fiber (60d (denier)) Unit weight (weight): 80 to 90 g / cm ² Knitting structure: Single knitting Coating: 1st application Purpose: Water repellent resin: Fluorine resin + silicone resin 2nd Application Purpose: Anti-fraying and elasticity retention at high temperature Resin: Silicone rubber-based resin Application amount: 20 to 30% by weight based on the material Other: Addition of surfactant, carbon, etc. for antistatic purposes In the above examples, The diameter of the tape reel is 40-4
The tape width is 1/2 inch (12.
65mm), the length of the tape is 80m, the length of the belt is 1
60 to 170 mm, the belt width is 4 mm, 6 mm,
Although it was set to 11 mm, the running property of the tape was good in all cases.

(Second Embodiment) Next, a second preferred embodiment of the tape cartridge of the present invention will be described with reference to FIGS. FIG. 4 is a perspective view showing a state in which the upper cover of the tape cartridge of the second embodiment is removed,
FIG. 5 is a plan view thereof. Since the elements with the same numbers as in the first embodiment are substantially the same, the description thereof will be omitted.

In the tape cartridge shown in FIGS. 4 and 5, fixed shafts 19a and 19b are provided near the left and right ends of the rear side 15b of the base member 15 instead of the belt guide rollers 16b and 16c. Both ends of the belt 91 are fixed to the fixed shafts 19a and 19b.

In the second embodiment, a knitted fabric similar to the belt 91 in the first embodiment is used as the material of the belt 91. However, in order to reduce the running resistance of the tape 5, the belt 91 is made of fluorine resin. To reduce the coefficient of friction with the tape 5. Tape 5 is always belt 9
Since the belt 91 travels while contacting with the belt 1, by selecting a material suitable for tape cleaning as the material of the belt 91, the tape cleaning effect of the belt 91 can be further increased. Belt guide roller 16a
The belt guide roller 16a can be made non-rotatable (fixed) by using a material that is smooth with respect to the belt 91.

(Third Embodiment) Next, a preferred third embodiment of the tape cartridge of the present invention will be described with reference to FIGS. 6 and 7. FIG. 6 is a perspective view showing a state in which the upper cover of the tape cartridge of the third embodiment is removed,
FIG. 7 is a plan view thereof. Since the elements with the same numbers as in the first embodiment are substantially the same, the description thereof will be omitted. The third embodiment is an example in which the passage of the belt 92 is changed to accommodate a tape cartridge with a large reel.

In the tape cartridge shown in FIGS. 6 and 7, belt guide rollers 16d and 16e are provided near the left and right ends of the rear side 15b of the base member 15 in addition to the belt guide rollers 16b and 16c. Reference numeral 92 designates these five belt guide rollers 16a-1.
Guided by 6e. That is, the reels 4a, 4
If the diameter of b is large, and if the belt 92 is guided by three belt guide rollers as in the first embodiment, the inner peripheral surfaces of the belt 92 come into contact with each other, and the belt 92
It may happen that the tape cannot travel along with the running of the tape 5. On the other hand, by increasing the number of belt guide rollers, contact of the inner peripheral surface of the belt 92 can be prevented, and smooth running of the belt 92 can be guaranteed. The belt guide roller 16a,
16b, 16c, 16d and 16e are provided with a collar to stabilize the traveling path of the belt.

(Fourth Embodiment) Next, a preferred fourth embodiment of the tape cartridge of the present invention will be described with reference to FIGS. 8 and 9. FIG. 8 is a perspective view showing a state where the upper cover of the tape cartridge of the fourth embodiment is removed,
FIG. 9 is a plan view thereof. Since the elements with the same numbers as in the first embodiment are substantially the same, the description thereof will be omitted. The fourth embodiment particularly shows an example applied to a tape cartridge provided with a reel lock mechanism. Further, in FIG. 9, the upper flange of the reel 4b on the right side in the drawing is removed in order to clearly show the passage of the belt 93.

The cartridge shown in FIGS. 8 and 9 has a shaft 1
The reel lock mechanism includes a reel lock arm 17 rotatable about 7a and a reel lock member 18 provided at the center of the rear side 15b of the base member 15 and the like. When the tape cartridge is attached to the recording / reproducing device (not shown), the reel lock arm 17 rotates, and the reel lock member 18 that has stopped the rotation of the supply-side reel 4a is rotated. The claw (not shown) engaged with the reel 4a by the rotation of the reel lock member 18
And the reel 4a on the supply side can freely rotate.

In the fourth embodiment, a reel lock mechanism is provided at the position where the belt guide roller 16c was provided in the first embodiment. Therefore, the belt 93 includes the front side 15 a and the rear side 1 of the base member 15.
It is guided by four belt guide rollers 16a, 16b, 16c and 16d provided near the central portion of 5b. Further, in order to avoid spatial interference with the belt 93, the reel lock arm 17 is notched, for example, on the side close to the base member 15.

As shown in FIGS. 8 and 9, the belt 93 is in an initial state in which almost all of the tape 5 is wound on one reel 4a or 4b and almost not wound on the other reel 4b or 4a. The positions of the four belt guide rollers 16a, 16b, 16c and 16d are set so as to be in contact with the reel on which the tape is hardly wound. By doing so, the winding angle of the belt 93 can be minimized, and the tape 5
The withdrawal tension of can be kept lower.

(Fifth Embodiment) Next, a preferred fifth embodiment of the tape cartridge of the present invention will be described with reference to FIGS. FIG. 10 is a perspective view showing a state in which the upper cover of the tape cartridge of the fifth embodiment is removed, and FIG. 11 is a plan view thereof. Since the elements with the same numbers as in the first embodiment are substantially the same, the description thereof will be omitted. In the fifth embodiment, instead of the belt used in the first to fourth embodiments, two leaf-spring-shaped touch arms 20 having elasticity are rotatably supported by the tips. An example in which the pressing roller 21 is used as a pressing member is shown.

In the tape cartridge shown in FIGS. 10 and 11, the touch arm 20 is rotatably supported around a shaft 20a provided at the substantially central portion of the front side 15a of the base member 15, and the tape 5 is attached thereto. While being wound from one reel 4a or 4b to the other reel 4b or 4a, the touch arm 20 changes in accordance with a change in diameter of the tape portions 5a and 5b wound around the reels 4a and 4b.
Rotates. At the tip of each arm of the touch arm 20,
A pressing roller 21 that rotates following the running of the tape 5 is attached. Since the pressing roller 21 is rotatable, the surface of the tape 5 is not damaged when the tape 5 is running, and running resistance can be reduced.

When the pressing roller 21 is made of a material having a slight adhesiveness, not only can the air between the tape layers of the tape portions 5a and 5b wound around the reels 4a and 4b be removed, but also the pressing roller 21 can prevent the tape 5 from moving. When the surface of the tape is rolled, the adhesiveness allows cleaning of dust and the like adhering to the surface of the tape 5. As a result, an increase in dropout can be suppressed.

Regarding the contact pressure for pressing the tape 5 of the pressing roller 21 due to the elasticity of the touch arm 20, the tape 5
It is necessary that at least the pressing roller 21 does not separate from the surface of the tape 5 when traveling. If the contact pressure of the pressing roller 21 is higher than a predetermined value, the tape surface may be scratched or the running resistance may increase. Fifth
In the case of Example 1, it was confirmed that 1N or less was sufficient, but 0.2N or less is particularly preferable. In addition, in order to prevent the pressing roller 21 from scratching the surface of the tape 5, it is preferable that the end portion of the pressing roller 21 be rounded. Further, the pressing roller 21 may be crowned. Further, in order to prevent the tape 5 wound around the reels 4a and 4b from loosening, the pressing roller 21 may have an appropriate rotation resistance. Further, the tolerance (play) of the pressing roller 21 in the direction (width direction) orthogonal to the tape running direction is preferably 0.5 mm or less. As a result, the vertical movement of the pressing roller 21 in the width direction of the tape can be pushed within a certain range, and the slip of the tape 5 in the width direction and the protrusion from the reels 4a and 4b can be prevented. Furthermore, it is preferable to impregnate the pressing roller 21 with a lubricant. Thereby, the lubricant can be applied to the surface of the tape 5, and the still life performance can be significantly improved without lowering the film strength of the tape 5.

Comparative Example Next, in order to confirm the effect of the present invention, a conventional tape cartridge having no pressing member (belt or touch arm) was manufactured. The details of the tape cartridge of the comparative example are shown in FIG. The pressing member has substantially the same configuration as that of the third embodiment except for the belt. Fast-forwarding and rewinding of the tape were repeated using the tape cartridges according to the first to fifth examples and the comparative example. The experimental results are shown in Table 1. In Table 1, the winding form represents the winding form after 100 forward and backward rewinds. Also, ○ indicates very good, △ indicates good, ×
Indicates that winding disorder occurs. Also, the dropout increase rate is
It shows how many times the dropout value increased after 100 round trips compared to the initial dropout value.

[0071]

[Table 1]

From Table 1, it can be seen that, according to the tape cartridge of the present invention, the winding shape is good and the dropout increase is suppressed.

In each of the above-mentioned embodiments, a straight roller having a uniform diameter in each portion is used as the tape guide 6, but the roller for the tape guide 6 is crowned in order to make the traveling path of the tape 5 more stable. May be. Or
The roller for the tape guide 6 may have a collar.
As a result, the running of the tape 5 becomes smoother and more stable, and the vertical movement of the tape in the width direction can be restricted. Alternatively, the tape guide 6 can be made non-rotating (fixed) by selecting a material having a small friction with the tape 5 as the material of the tape guide 6 and finishing the surface smoothly. Similarly, in order to further stabilize the running state of the belt 9, the belt guide roller 1
6a, 16b, 16c may have a collar. In addition,
It is also possible to make the belt guide non-rotating (fixed) by selecting a material having a small friction with the belt 9 as the material of the belt guide rollers 16a, 16b, 16c and finishing the surface smoothly.

In the above first to fourth embodiments, a knitted fabric having high elasticity is used as the material for the belts 9, 91, 92 and 93. However, polyester, nylon, polyurethane, rayon, fluorine, etc. may be used. Textile fabrics,
Elastic non-woven fabric, resin sheet with appropriate surface treatment,
The same effect can be obtained by using a film material or the like.

Further, it is possible to use a material having small elasticity as a material of the belt by bringing the tension adjusting roller into contact with a part of the belt. Since the tension adjusting roller stretches the belt to keep the tension constant, the same effect can be obtained.

Also, by using a material having small elasticity, the second
In the case where both ends of the belt are fixed as in the above embodiment, substantially the same effect can be obtained by fixing at least one end of the belt via an elastic member such as a spring. Also,
The magnetic tape can be cleaned by using a material having a good trapping property such as dust as the material of the belt. When the belt actually travels, the belt slightly slides on the surface of the tape, so that dust and the like adhering to the surface of the tape can be captured. As a result, it is possible to prevent the occurrence of dropout, the deterioration of the error rate, and the like.

The tape cartridge of the present invention can be applied to a VTR system using a rotary head such as VHS, VHS-C, 8 mm video and beta, which are commercially available, DAT, DDS and the like. Further, it can be applied to a cartridge such as a QIC and can be used in a rotary head system. It can also be applied to a system that does not use a rotary head, a Phillips type compact cassette, a fixed head system that does not pull out tape such as DCC. In addition to the above magnetic tape, it goes without saying that it can be applied to all tapes that run between a pair of reels, such as films, roll papers, magneto-optical tapes, optical recording tapes, and arbitrary flexible sheets.

[0078]

As described above, according to the tape cartridge of the present invention, a pair of reels rotatably supported on the base member and a pair of reels are wound between the front side of the base member. The tape that can be pulled out to the outside, the tape guide member that is provided on the base member for defining the traveling path of the tape, and the outer peripheral surface of the portion of the tape that is wound around the pair of reels are always in contact with each other, and A belt having smoothness, elasticity, and elasticity that is deformed according to a change in the outer diameter of the portion wound on each reel, and at least 3 for guiding the belt, which is provided at a predetermined position on the base member. Since it is provided with two belt guide members, the tape is wound around the reel while being pressed by the belt, so that the tape can be wound while removing air between the tape layers. Therefore, even when the tape moving speed is high, the tape portion wound around the reel does not slip or protrude in the width direction orthogonal to the tape running direction. Therefore, the tape is wound on the reel in a stable state. Further, since the tape is stably wound in the width direction, the edge of the tape does not rub against the bottom surface of the base member or the like. Therefore, even if a thin tape is used, the durability will not be deteriorated due to tape damage or the like.
Further, since the belt is constantly in contact with the surface (recording surface) of the tape, it is possible to remove dust and the like adhering to the surface of the tape. Therefore, it is possible to significantly reduce the error rate and the occurrence of dropout. Further, since the belt has smoothness, elasticity and stretchability, the load of the belt can be kept substantially constant while the tape is running, and the pull-out load when pulling out the tape from the tape cartridge can be reduced. . As a result, the tape cartridge can be used in a rotary head type recording / reproducing apparatus, and a signal of a relatively high frequency can be recorded / reproduced with high density.

Further, since the belt has a closed loop shape and the belt guide member is provided at least in the vicinity of the central portion on the front side of the base member and in the vicinity of both end portions on the rear side of the base member, the friction force between the belt and the tape causes The belt runs as the tape runs. Therefore, the pull-out load when pulling out the tape from the tape cartridge can be further reduced.

Alternatively, the belt has a closed loop shape, at least four belt guide members are provided, and two tape guide members are provided on each of the front side and the rear side between the pair of reels on the base member. A space is generated in the vicinity of the rear left and right ends of the cartridge, and another mechanism such as a reel lock mechanism can be provided.

Alternatively, the belt is in the form of a ribbon whose both ends are open, and the belt guide member is provided at least in the vicinity of the center of the front side of the base member and in the vicinity of both ends of the rear side thereof.
Since both ends of the belt member are fixed to belt guide members provided near both ends on the rear side of the base member, the belt can be provided even in a narrow space, and the tape cartridge can be miniaturized.

Further, since at least one of the belt guide members is a roller rotatably supported, the belt can easily and smoothly follow the running of the tape. The tape running or pulling load due to friction between the two can be reduced.

Further, the roller is crowned so that the diameter of the central portion is larger than the diameter of both ends, or the roller is provided with a collar, so that the belt runs in the width direction orthogonal to the running direction of the belt. The route stabilizes. As a result, fast-forwarding and rewinding of the tape can be performed stably and smoothly, and the tape can be wound in a stable state without slipping or protruding in the width direction.

Further, since the play of the roller in the width direction of the belt is 0.5 mm or less, the vertical movement width of the belt in the width direction of the roller is restricted within a certain range, and the running path of the belt in the width direction is stable. To do. As a result, the width of the load fluctuation of the tape running or pulling out becomes small, and the tape running becomes stable and smooth. The tape does not slip or stick out in the width direction, and the tape is wound in a stable state.

Alternatively, since at least one of the belt guides is a fixed shaft, it is possible to cope with a small tape cartridge having no space for providing a belt for the belt guide, and it is possible to reduce the cost.

Further, since the angle of entry and the angle of exit of the belt with respect to the winding core of the reel in which the tape is not wound are substantially coincident with the tangential direction of the winding core, the winding angle of the belt with respect to the winding core of the reel is Can be minimized, and the tape drawing load can be reduced.

Further, since the reel lock mechanism is rotatably supported on the base member and does not interfere with the belt space, the tape is carelessly loaded when the tape cartridge is not installed in the recording / reproducing apparatus. It is possible to prevent the tape from being pulled out and the tape from sagging.

Further, since the tape guide member is a roller which is rotatably supported, the friction between the tape and the tape guide member is reduced, and the load when the tape is running and when it is pulled out is also small.

Further, the roller is crowned so that the diameter of the central portion is larger than the diameter of both ends, or the roller is provided with a collar, so that the tape running path in the width direction of the tape is stable, The tape does not slip in the width direction or stick out, and it can be wound in a stable state, improving the winding appearance of the tape.

Further, since the play of the roller in the width direction of the belt is 0.5 mm or less, the vertical movement width of the tape in the width direction of the tape is restricted within a certain range, and fluctuations in tape running or drawing load are reduced. can do. As a result, the tape running is stable, the tape does not slip in the width direction and does not stick out, and the tape can be wound in a stable state, and the winding shape of the tape is improved.

Alternatively, since the tape guide is a fixed shaft fixed to the base member, it can be applied to a small tape cartridge having no space for providing a roller for the tape guide, and the cost can be reduced. .

Further, since the material of the belt is at least one selected from a woven fabric of fibers, a knitted fabric of fibers, and a non-woven fabric, the belt can easily slide on the surface of the tape without damaging the surface of the tape. The tape can be wound on the reel while bleeding air.

By impregnating the belt with a lubricant, the lubricant is transferred onto the surface (magnetic surface) of the tape when the tape is running, and the still life performance of the tape is improved without lowering the coating strength of the tape. It can be greatly improved.

The coefficient of friction between the belt and tape is 0.7.
Since it is below, the belt slides smoothly on the surface of the tape, so even if the tape speed is fast, the tape can be wound in a stable state on the reel, and the still life performance of the tape can be greatly improved. .

Further, since the tension of the belt is 3 N or less, the belt can be expanded and contracted smoothly according to the change in the diameter of the tape portion wound around the reel.

Further, the end face in the width direction of the belt is heat-melted,
Or, by coating the belt with resin,
The end face of the belt is protected, fraying can be prevented, and the durability of the belt is improved.

On the other hand, according to another tape cartridge of the present invention, the reel is rotatably supported on the base member and the reel is wound between the pair of reels and is drawn out from the front side of the base member to the outside. Possible tape, a tape guide member provided on the base member for determining the traveling path of the tape, and an outer circumference of a portion of the tape provided between the pair of reels on the base member and wound on the pair of reels. A pressing roller rotatably provided at the tip of two leaf-spring-shaped arms that are in constant contact with the respective surfaces and that rotate in accordance with changes in the outer diameter of the portions wound on the pair of reels. Therefore, since the tape is wound around the reel while being pressed by the pressing roller, the air between the tape layers wound around the reel can be removed. Therefore, even when the tape traveling speed is high, the tape portion wound around the reel does not slip or protrude in the width direction. As a result, the tape is wound in a stable state. Further, since the tape is stably wound in the width direction, the edge of the tape does not rub against the base member. Therefore, even when a thin tape is used, the durability of the tape is not deteriorated due to the damage of the tape or the like. Further, since the pressing roller is constantly in contact with the surface (recording surface) of the tape, it is possible to remove dust and the like adhering to the tape surface. As a result, the error rate and the occurrence of dropout can be significantly reduced. Further, since the pressing roller is rotatable, it does not damage the surface of the tape while the tape is running. Further, the load of the pressing member can be kept substantially constant while the tape is running, and the pull-out load when pulling out the tape from the tape cartridge can be reduced. As a result, it can be used in a rotary head type recording / reproducing apparatus, and a signal of a relatively high frequency can be recorded / reproduced with high density.

Further, since the tolerance of the pressing roller in the width direction of the tape is 0.5 mm or less, the vertical movement of the pressing roller in the width direction of the tape can be pressed within a certain range, and the slip in the width direction of the tape can be prevented. The protrusion from the reel can be prevented.

Further, by forming an arcuate chamfer on the end portion of the pressing roller in the width direction of the tape, the tape can be wound on the reel without being damaged by the roller.

Further, by providing the pressing roller with a rotational resistance, the pressing roller can roll while slightly sliding on the tape. Therefore, it is possible to remove dust and the like adhering to the tape surface, and it is possible to significantly reduce the error rate and the occurrence of dropout.

Alternatively, since the pressure roller has an adhesive property, when the pressure roller rolls on the tape, dust and the like adhering to the tape surface are adsorbed and removed by the pressure roller, so that the error rate and the dropout are prevented. Occurrence can be significantly reduced.

By setting the tape pressing force of the pressing roller to 1 N or less, the tape can be smoothly run without being caught by the pressing force of the pressing roller.

By impregnating the pressure roller with a lubricant, the lubricant is transferred onto the recording surface (magnetic surface) of the tape when the tape is running, and the still life performance is improved without lowering the coating strength of the tape. It can be greatly improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of a first embodiment of a tape cartridge of the present invention.

FIG. 2 is a plan view of the tape cartridge shown in FIG.

FIG. 3A is a perspective view showing the shape of the belt of the first embodiment, and FIG. 3B is a plan view showing details of the configuration of the belt.

FIG. 4 is a perspective view showing the configuration of a second embodiment of the tape cartridge of the present invention.

5 is a plan view of the tape cartridge shown in FIG.

FIG. 6 is a perspective view showing the configuration of a third embodiment of the tape cartridge of the present invention.

FIG. 7 is a plan view of the tape cartridge shown in FIG.

FIG. 8 is a perspective view showing the configuration of a fourth embodiment of the tape cartridge of the present invention.

9 is a plan view of the tape cartridge shown in FIG.

FIG. 10 is a perspective view showing the configuration of a fifth embodiment of the tape cartridge of the present invention.

11 is a plan view of the tape cartridge shown in FIG.

FIG. 12 is a perspective view showing the configuration of a conventional tape cartridge as a comparative example for confirming the effect of the embodiment of the present invention.

FIG. 13 is a plan view showing the configuration of a tape cartridge of Conventional Example 1.

FIG. 14 is a perspective view showing a configuration of a tape cartridge of Conventional Example 2.

FIG. 15 is a perspective view showing another configuration of the tape cartridge of Conventional Example 2.

FIG. 16 is a perspective view of a crown roller used in one embodiment of the present invention.

[Explanation of symbols]

 4a: Reel 4b: Reel 5: Tape 5a: Tape part 5b: Tape part 6: Tape guide 9: Belt 15: Base member 15a: Front side 15b: Rear side 16a: Belt guide roller 16b: Belt guide roller 16c: Belt guide Roller 16d: Belt guide roller 16e: Belt guide roller 17: Reel lock arm 17a: Shaft 18: Reel lock member 19a: Fixed shaft 19b: Fixed shaft 20: Touch arm 21: Pressing roller 91: Belt 92: Belt 93: Belt

Claims (29)

[Claims] 1. A pair of reels that are rotatably supported on a base member, a tape wound between the pair of reels, and a tape that can be drawn out from the front side of the base member to the outside. And a tape guide member for determining a traveling path of the tape, and an outer peripheral surface of a portion of the tape wound on the pair of reels, respectively, are always in contact with each other, and are wound on the pair of reels, respectively. A belt having smoothness, elasticity, and elasticity that deforms according to a change in the outer diameter of the portion, and at least three belt guide members that are provided at predetermined positions on the base member and that guide the belt. A tape cartridge comprising the. 2. The tape cartridge according to claim 1, wherein the belt has a closed loop shape, and the belt guide member is provided at least near a central portion on a front side and both end portions on a rear side of the base member. 3. The belt has a closed loop shape, at least four belt guide members are provided, and two belt guide members are provided on each of the front side and the rear side between the pair of reels on the base member. The tape cartridge according to claim 1, wherein 4. The belt is ribbon-shaped with both ends open, the belt guide member is provided at least in the vicinity of the front center part and in the rear end parts of the base member, and both ends of the belt member are 2. The tape cartridge according to claim 1, wherein the tape cartridge is fixed to belt guide members provided near both ends on the rear side of the base member. 5. The tape cartridge according to claim 1, wherein at least one of the belt guide members is a roller rotatably supported. 6. The tape cartridge according to claim 5, wherein the roller is crowned so that the diameter of the central portion is larger than the diameter of both end portions. 7. The tape cartridge according to claim 5, wherein the roller has a collar. 8. The tape cartridge according to claim 5, wherein a tolerance of the roller in the width direction of the belt is 0.5 mm or less. 9. The tape cartridge according to claim 1, wherein at least one of the belt guides is a fixed shaft. 10. The winding angle of the belt with respect to the winding core of the reel in which the tape is not wound is substantially the same as the tangential direction of the winding core according to any one of claims 1 to 4. Tape cartridge. 11. The tape cartridge according to claim 3, further comprising a reel lock mechanism which is rotatably supported on the base member and which does not interfere with the belt spatially. 12. The tape cartridge according to claim 1, wherein the tape guide member is a roller rotatably supported. 13. The tape cartridge according to claim 12, wherein the roller is crowned so that a diameter of a central portion thereof is larger than a diameter of both end portions thereof. 14. The roller is flanged.
The described tape cartridge. 15. The tape cartridge according to claim 12, wherein a tolerance of the roller in the width direction of the belt is 0.5 mm or less. 16. The tape cartridge according to claim 12, wherein the tape guide is a fixed shaft. 17. The tape cartridge according to claim 1, wherein the material of the belt is any one selected from a woven fabric of fibers, a knitted fabric of fibers, and a non-woven fabric. 18. The tape cartridge according to claim 1, wherein the belt is impregnated with a lubricant. 19. The tape cartridge according to claim 1, wherein a friction coefficient between the belt and the tape is 0.7 or less. 20. The tape cartridge according to claim 1, wherein the tension of the belt is 3 N or less. 21. The tape cartridge according to claim 17, wherein the end surface of the belt in the width direction is heat-melted. 22. The tape cartridge according to claim 17, wherein the belt is coated with a resin. 23. A pair of reels rotatably supported on a base member, and a tape wound between the pair of reels and capable of being drawn out from the front side of the base member.
A tape guide member provided on the base member for defining a traveling path of the tape; and a portion of the tape provided between the pair of reels on the base member and wound on the pair of reels of the tape. And a pressing roller provided at the tip of two leaf-spring-shaped arms that are in constant contact with the outer peripheral surface and that rotate according to changes in the outer diameter of the portions wound on the pair of reels. Tape cartridge. 24. The tape cartridge according to claim 23, wherein a tolerance of the pressing roller in the tape width direction is 0.5 mm or less. 25. The tape cartridge according to claim 23, wherein an end portion of the pressing roller in the width direction of the tape is chamfered in an arc shape. 26. The tape cartridge according to claim 23, wherein the pressing roller has a rotation resistance. 27. The tape cartridge according to claim 23, wherein the pressing roller has an adhesive property. 28. The tape pressing force of the pressing roller is 1N.
The tape cartridge according to claim 23, which is as follows. 29. The tape cartridge according to claim 23, wherein the pressure roller is impregnated with a lubricant.