JPH06282913A - Data cartridge - Google Patents

Abstract

(57) [Abstract] [Purpose] It is possible that a data cartridge using a wide magnetic tape may be erroneously inserted into an existing recording / reproducing device developed for an existing data cartridge using a small magnetic tape. To be able to prevent it. [Structure] A second data cartridge C developed to increase the recording capacity by expanding the tape width of the magnetic tape.
In addition, erroneous insertion preventing means 36 for preventing erroneous insertion into the current first recording / reproducing apparatus D1 for recording / reproducing the current first data cartridge having a small tape width of the magnetic tape.
Is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data cartridge most suitable for high density recording (backup memory) of CPU data, for example.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Publication No. 52-14976 has been known as a data cartridge for high-density recording (backup memory) of CPU data.

A conventional data cartridge of this type (hereinafter referred to as the first data cartridge) C1 is shown in FIGS.
As shown in FIG. 14, the cartridge 1 is fixed to the base plate 2 made of an aluminum plate or the like, which is the lower half, by screwing the thin box-shaped upper cover 3, which is the upper half, molded of the synthetic resin having a light-transmitting property. It is formed by doing. A pair of left and right upper and lower flanged tape reels 4 formed of synthetic resin are rotatably supported on the base plate 2, and a magnetic tape 5 is wound around the pair of left and right tape reels 4. This magnetic tape 5 is guided by three flanged tape guides 6 attached to the base plate 2 and is hung along the inside of the front wall 3 a of the upper cover 3. Further, a drive roller 7 and a pair of left and right corner rollers 8 formed of synthetic resin are rotatably supported at substantially the center of the front edge 2a on the base plate 2 and both left and right corners on the rear edge 2b side. ing.
An elastic drive belt 9 formed of a rubber belt or the like is wound between the drive roller 7 and both corner rollers 8 in a substantially T shape with a strong tension. A pair of left and right drive portions 9a between the drive roller 7 of the drive belt 9 and the pair of left and right corner rollers 8 are paired with the left and right tape winding portions 5a of the magnetic tape 5 wound around the tape reels 4. Is pressed against the outer circumference of.

A pair of left and right tape reels 4 and three rollers 7 and 8 are rotatably supported on the outer periphery of a support shaft 10 made of a total of five metal or the like vertically planted on the base plate 2 by press fitting or the like. Has been done. A tape end photodetection mirror 12 is attached to the inside of the running path of the magnetic tape 5.

A pair of left and right groove-like portions 13 cut in parallel from the front wall 3a are formed parallel to each other outside the left and right side walls 3b of the upper cover 3, and these groove-like portions 13 are formed.
Inside, a pair of left and right positioning notches 14 are formed on the front end sides of the left and right end portions 2c of the base plate 2.

A head which is cut out in a substantially trapezoidal shape so as to straddle the base plate 2 and the ceiling wall 3c of the upper cover 3 on one side of the drive roller 7 on the side of the front edge 2a of the base plate 2. An insertion hole 15 is formed, and this head insertion hole 15
An opening / closing door 16 for opening and closing is rotatably attached between the base plate 2 and the ceiling wall 3c of the upper cover 3 via a fulcrum shaft 17.

The drive roller 7 has a large-diameter roller portion 7b integrally formed on an upper portion of a small-diameter roller portion 7a around which the drive belt 9 is wound, and the front side of the large-diameter roller portion 7b is a front wall of the upper cover 3. It is exposed in the roller insertion hole 18 formed in 3a.

Next, a first recording / reproducing apparatus (drive apparatus) D1 for recording / reproducing the conventional first data cartridge C1 of this kind is provided with a cartridge positioning mechanism as shown in FIGS. .

That is, a cartridge insertion space 24 is horizontally formed in a cartridge insertion opening 23 formed in the front panel 22 of the first recording / reproducing apparatus D1, and a pair of left and right base plates are inserted into the left and right side walls 24a. The grooves 25 are formed horizontally and in parallel. A pair of left and right cartridge front and rear position restricting portions 26 are formed integrally with the left and right side walls 24a at the ends of the pair of left and right base plate insertion grooves 25 on the arrow a direction side, which is the cartridge insertion direction.
Further, three cartridge vertical position restricting portions 27 formed by downward convex portions are integrally formed at a total of three places on the downward upper side surface 25a of the pair of left and right base plate insertion grooves 25. A pair of left and right cartridge positioning rollers 28 are attached to the pair of left and right base plate insertion grooves 25 in the vicinity of the pair of left and right cartridge front-rear position restricting portions 26.

The pair of left and right cartridge positioning rollers 28 are arranged in a pair of left and right notches 29 formed in the left and right side walls 24a. Then, a pair of left and right plate springs 30 parallel to the pair of left and right base plate insertion grooves 25.
Is fixed to the lower surfaces of the left and right side walls 24a, and a pair of left and right cartridge positioning rollers 28 are rotatably supported at the other ends of the pair of left and right leaf springs 30.
The pair of left and right leaf springs 30 urge the pair of left and right cartridge positioning rollers 28 to move upward in the direction of arrow b. A leaf spring 31 is attached to the center of the bottom wall 24b of the cartridge insertion space 24 at a position deviated to the cartridge insertion port 23 side to urge the cartridge 1 in the upward arrow b direction.

Then, as shown in FIGS. 14 to 16, the front edge 2a of the base plate 2 of the first data cartridge C1.
The first data cartridge C1 from the cartridge insertion opening 23 of the first recording / reproducing apparatus D1 into the cartridge insertion space 24 in the direction of arrow a.

At this time, the left and right end portions 2c of the base plate 2 are inserted into the pair of left and right cartridge insertion grooves 25 in the direction of the arrow a, so that the base plate 2 is located at the central portion of the leaf spring 3.
1 but the door 16 is opened immediately before the insertion is started.
The free end portion 16a of the door is brought into contact with one side wall 24a, and the opening / closing door 16 is moved around the fulcrum shaft 17 as shown by the alternate long and short dash line in FIG. 14 against the built-in spring (not shown). The door is opened in the c direction.

Then, as shown in FIGS. 15 to 16, the first data cartridge C1 is inserted into the cartridge insertion space 2
When the first data cartridge C1 is completely inserted into the cartridge 4 from the direction of the arrow a, the first data cartridge C1 is positioned with high precision.

That is, first, the left and right ends of the front edge 2a of the base plate 2 are brought into contact with the pair of left and right cartridge front and rear position restricting portions 26 in the direction of the arrow a, and the insertion of the data cartridge C1 is stopped almost at the same time. The pair of left and right cartridge positioning rollers 28 are engaged in the pair of left and right positioning notches 14 of the base plate 2 in the direction of arrow b from below by the pair of left and right leaf springs 30. Then, the pair of left and right cartridge positioning rollers 28 press the front ends 14a of the pair of left and right positioning notches 14 diagonally upward and upward in the direction of arrow d.

As a result, the pair of left and right positioning rollers 28
Also, the entire first data cartridge C1 is urged to move in both directions of the arrows a and b in the cartridge insertion space 24 by the leaf spring 31 at the central portion, so that the front end edge 2a of the base plate 2 becomes a pair of left and right cartridge front and rear. Position restriction unit 26
At the same time as being elastically pressed in the direction of arrow a, the left and right ends 2c of the base plate 2 are elastically pressed by the three cartridge vertical position restricting portions 27 in the direction of arrow b, so that the first data cartridge C1 becomes a cartridge. It is positioned in the insertion space 24 with high accuracy. Then, the pair of left and right cartridge positioning rollers 28 lock the first data cartridge C1 in the cartridge insertion space 24.

Then, the first data cartridge C
When the insertion of 1 is completed, as shown in FIG. 14 and FIG.
The magnetic head 32 and the magnetic tape drive roller 33 attached to the first recording / reproducing apparatus D1 side are relatively inserted in the magnetic head insertion hole 15 and the roller insertion hole 18 from the direction of arrow a ', respectively, and The head 32 and the drive roller 33 are pressed against the large-diameter roller portion 7b of the magnetic tape 5 and the drive roller 7. The magnetic tape drive roller 33 is formed of a rubber roller or the like.

Then, the completion of the insertion of the first data cartridge C1 is detected by the cartridge-in switch 34. And the first record from the CPU,
In response to the reproduction command signal, as shown in FIG. 14, the magnetic tape drive motor (not shown) rotationally drives the drive roller 7 through the magnetic tape drive roller 33, for example, in the direction of arrow e, and the drive belt 9 is moved to the arrow direction. The tape is driven to rotate in the f direction, and the two tape reels 4 are driven to rotate in the arrow f direction by the two drive parts 9a through the tape winding parts 5a, and the magnetic tape 5 moves at a high speed of 25 to 120 inch / sec in the arrow g direction. The magnetic head 32 is used to record and reproduce CPU data on and from the magnetic tape 5. .

By the way, the conventional first data cartridge C1 of this type includes a small cartridge (hereinafter referred to as S type) and a large cartridge (hereinafter referred to as L type).
Although various types of cartridges are standardized, in both S and L type cartridges, as shown in FIGS. 17A and 17B, the tape width W ₁ of the magnetic tape 5 is reduced to 1/4 inch. The standards were unified.

Incidentally, as shown in FIG. 13, the width X in the left-right direction, the depth Y in the front-rear direction, and the thickness Z of the first data cartridge C1 of this type are X in the case of the S type.
= 80.98 mm, Y = 61.1 mm, Z = 15.0 m
Standardized to m, X = 15 for L type
The specifications were standardized to be 2.4 mm, Y = 101.6 mm, and Z = 17.1 mm.

As described above, the conventional first data cartridge C1 has a problem that the recording capacity of the magnetic tape 5 is small because the tape width W ₁ of the magnetic tape 5 is as small as 1/4 inch. It was

Therefore, the outer diameter dimensions of the width X, the depth Y, and the thickness Z of the first cartridge 1 are hardly changed,
As shown in FIG. 17C, the tape width W of the magnetic tape
₂ is expanded to a wide width of, for example, 8 inches, and the magnetic tape 5
It is conceivable to expand the recording capacity of the.

At this time, in relation to the base plate 2 of the first data cartridge C1 being formed of an aluminum plate or the like, as shown in FIGS. 17A and 17C, the tape of the magnetic tape 5 is used. Even if the width is expanded from W ₁ to W ₂ , the height of these magnetic tapes 5 must be the lower end reference P _1, and the upper end 5c of the magnetic tape 5 expanded to the width W ₂ has the width W ₁
Of the magnetic tape 5 is displaced upward by a height H ₁ corresponding to W ₂ −W ₁ .

On the other hand, as shown in FIGS. 17A, 17B and 17C, the mounting height of the magnetic head 32 in the recording / reproducing apparatus D ₁ is also between the upper limit position P ₂ and the lower limit position P _3. There are variations in height H ₂ .

[0024]

Therefore, a small width (1/4
Inch) Current 1st using W ₁ magnetic tape 5
The current first recording / reproducing device D1 which is developed for recording and reproducing the data cartridge C1 of
(mm) W _{2 When} a new second data cartridge using the magnetic tape 5 is erroneously inserted, the mounting height of the magnetic head 32 is lowered to the lower limit position P ₃ , as shown in FIG. 17B. 17C, as shown in FIG. 17C, the upper end 5c of the magnetic tape 5 having the wide width W ₂ protrudes upward from the upper edge 32a of the magnetic head 32 which is relatively pressure-bonded in the direction of the arrow a. In order to
There is a problem in that the upper edge 32a of the magnetic head 32 causes fatal damage such as the upper edge 5c of the wide width W ₂ magnetic tape 5 being bent and damaged.

The present invention has been made in order to solve the above problem, and was developed for a current data cartridge using a wide magnetic tape and a data cartridge using a narrow magnetic tape. It is an object of the present invention to provide a data cartridge capable of preventing the erroneous insertion into the existing recording / reproducing apparatus.

[0026]

SUMMARY OF THE INVENTION To achieve the above object, a day cartridge of the present invention comprises a cartridge constituted by a base plate and an upper cover, and a pair of rotatably supported inside the cartridge. A tape reel, a drive roller and a pair of corner rollers, a magnetic tape wound around the pair of tape reels, and a pair of drive units wound around the drive roller and the corner roller in a substantially T shape. A drive belt driven by the drive roller in a state of being pressed against the outer circumference of the tape winding portion of the pair of tape reels, the first data cartridge having a small tape width of the magnetic tape; A second data cartridge having a large tape width of the magnetic tape, and recording the first data cartridge The erroneous insertion preventing means for preventing erroneous insertion of the second data cartridge into the recording and reproducing apparatus for reproducing those provided to the second data cartridge. At this time, the erroneous insertion preventing means is constituted by the bent portion formed on the base plate of the second data cartridge, and the lateral width of the base plate of the second data cartridge is enlarged. It is preferable that the erroneous insertion preventing means is constituted, and the erroneous insertion preventing means is constituted by a pair of left and right convex portions projecting at both left and right end portions of the front end edge of the second data cartridge.

[0027]

In the data cartridge of the present invention having the above-described structure, the tape width of the magnetic tape is the same as that of the second data cartridge developed to increase the recording capacity by expanding the tape width of the magnetic tape. Since an erroneous insertion preventing means for preventing erroneous insertion into the current first recording / reproducing apparatus for recording / reproducing a small current first data cartridge is provided, the second data cartridge is the current first data cartridge. It is possible to prevent from accidental insertion into the recording / reproducing apparatus.

[0028]

Embodiments of the present invention will be described below with reference to FIGS. It should be noted that the same reference numerals are given to the same structural parts as those in FIGS.

[0029]

[First Embodiment] First, a first embodiment will be described with reference to FIGS.

[0030] First, FIGS. 1 and 2, the second data cartridge, a new data cartridge using magnetic tape 5 is an enlarged view of the tape width W ₂ for example 8 mm C2
And the second data cartridge C
The outer diameter dimensions X, Y and Z of 2 are the tape width W shown in FIG.
₁ is the current data cartridge using a magnetic tape 5 1/4 inch first data cartridge C
It is configured the same as 1.

Then, the second data cartridge C
The erroneous insertion preventing means 36 formed on the cartridge 2 is provided in the cartridge-in switch 3 of the left and right ends 2c of the base plate 2.
It is formed on the end 2c on one side, which is the side close to the detection side by 4 (the side opposite to the opening / closing door 16).

The erroneous insertion preventing means 36 is integrally formed on the rear end 14b side of the one notch 14 formed at the one end 2c of the base plate 2 and has a substantially chevron shape upward. The bent portion 37 is bent. The bent portion 37 is cut and raised upward from the base plate 2 by a slit 38 formed in the base plate 2.

On the other hand, as shown in FIGS. 2 and 4A, of the pair of left and right base plate insertion grooves 25 of the second recording / reproducing apparatus D2 for recording / reproducing the second data cartridge C2. A concave groove 39 cut from the cartridge insertion opening 23 side is formed on one upper side surface 25a.

Therefore, as shown in FIGS. 2 and 4A, the second data cartridge C2 is inserted from the cartridge insertion opening 23 of the second recording / reproducing apparatus D2 into the cartridge insertion space 24 in the direction of arrow a. In doing so, the bent portion 37 of the base plate 2 is formed into the concave groove 39 of the one base plate insertion groove 25.
Since it can be inserted inside, the left and right end portions 2c of the base plate 2 can be smoothly inserted into the pair of left and right base plate insertion grooves 25 from the direction of the arrow a without any trouble.

Further, as shown in FIG. 4, since the bent portion 37 does not come into contact with one of the cartridge positioning rollers 28, as described above, the pair of left and right cartridge positioning rollers 28 form a pair of left and right cartridge positioning rollers 28. The front end side 14a of the positioning notch 14 is accurately pressed in the direction of the arrow d to move the base plate 2 into the cartridge front-rear position restricting portions 26 and 3.
It is possible to surely crimp the two cartridge vertical position restricting portions 27 in the directions of arrows a and b. At this time, since the bent portion 37 is provided only on one end (opposite side of the open / close door 16) 2c of the base plate 2, the opposite end of the base plate 2 (open / close door 1).
6 side) 2c, the accurate positioning is performed by the two cartridge vertical position restricting portions 27 as in the conventional case.

Therefore, the second data cartridge C2 can be positioned in the cartridge insertion space 24 with high accuracy, and the completion of the insertion of the second data cartridge C2 can be accurately detected by the cartridge-in switch 34. be able to.

Next, as shown in FIGS. 3 and 4B, when the second data cartridge C2 is erroneously inserted into the first recording / reproducing apparatus D1 from the direction of arrow a,
The bent portion 37, which is the erroneous erasure prevention means 36 formed on the base plate 2, is caught on the upper side surface 25a of the base plate insertion groove 25 at the cartridge insertion port 23 portion, and the base plate 2
It is not possible to insert the left and right end portions 2c into the pair of left and right base plate insertion grooves 25.

Therefore, the second recording / reproducing apparatus D1 is connected to the second recording / reproducing apparatus D1.
The erroneous insertion of the data cartridge C2 and can be prevented, wide W ₂ as described in (C) of FIG. 17
The upper end 5c of the magnetic tape 5 is not damaged. Further, since the cartridge-in switch 34 of the first recording / reproducing apparatus D1 cannot detect the second data cartridge C2, this first recording / reproducing apparatus D1 does not operate.

[0039]

[Second Embodiment] Next, a second embodiment will be described with reference to FIGS.

In this case, as shown in FIG. 5, the first data cartridge C1 extends from the left and right end portions 2c of the base plate 2 of the second data cartridge C2 toward both left and right sides.
The erroneous insertion preventing means 36 is formed by a pair of left and right overhanging portions 40 overhanging a width X _{1 of} several mm from the width X of the base plate 2 and the lateral width of the base plate 2 is expanded to X ₁ + 2X ₁ . . The pair of left and right projecting portions 40 are formed in a range of length L ₁ from the rear end 14b of the pair of left and right notches 14 to the rear end edge 2b of the base plate 2.

Then, as shown in FIG. 6, when the second data cartridge C2 is erroneously inserted into the first recording / reproducing apparatus D1 from the direction of arrow a, erroneous insertion prevention formed on the base plate 2 is prevented. A pair of left and right overhanging portions 40 that are the means 35
Is caught at the cartridge insertion port 23,
The left and right ends 2c of the base plate 2 cannot be inserted into the pair of left and right base plate insertion grooves 25.

Therefore, the second recording / reproducing apparatus D1 is connected to the second recording / reproducing apparatus D1.
It is possible to prevent erroneous insertion of the data cartridge C2.

As shown by the dotted line in FIG. 6, in the second recording / reproducing apparatus D2, a pair of left and right concave grooves 41 are formed on the left and right side surfaces 25b of the pair of left and right base plate insertion grooves 25 to form a base plate. The pair of left and right overhanging portions 40 of 2 can be inserted from the direction of arrow a.

[0044]

Third Embodiment Next, a third embodiment will be described with reference to FIG.

In this case, an angle of a tapered shape is formed in the direction of arrow a from the front ends of the pair of left and right overhanging portions 40 of the second data cartridge C2 shown in FIG. 5 to the front edge 2a of the base plate 2. By forming a pair of left and right tapered surfaces 42 of θ _1, the left and right end portions 2c of the base plate 2 of the second data cartridge C2 are inserted into the pair of left and right base plate insertion grooves 25 of the second recording / reproducing device D2 by the arrow a. It is easy to insert from the direction.

Also in this case, like the second embodiment, it is possible to prevent the erroneous insertion of the second data cartridge C2 into the first recording / reproducing apparatus D1.

[0047]

[Fourth Embodiment] Next, a fourth embodiment will be described with reference to FIGS.

In this case, as shown in FIG. 8, the length of the pair of left and right overhanging portions 40 of the second data cartridge C2 in the front-rear direction is set from the rear end 14b side of the pair of left and right cutout portions 14 to the left and right side. the set length L ₂ until the rear end 13a of the groove portion 13, when the second data cartridge C2 is inserted into the second recording and reproducing apparatus D2, as shown by the one-dot chain line in FIG. 8 The position near the rear edge 2b of the left and right end portions 2c of the base plate 2 can be detected by the cartridge-in switch 34. In addition, 43 is a taper surface.

Then, as shown in FIG. 9, also in this case,
The erroneous insertion of the second data cartridge C2 into the first recording / reproducing apparatus D1 in the direction of arrow a can be prevented by the pair of left and right projecting portions 40.

[0050]

[Fifth Embodiment] Next, referring to FIG. 10 and FIG.
An example will be described.

In this case, as shown in FIG. 10, the left and right sides integrally formed on the base plate 2 of the second data cartridge C2 and projected forward by the dimension Y ₁ from the left and right end portions of the front end edge 2a thereof. The erroneous insertion preventing means 36 is formed by the pair of convex portions 44.

Then, as shown in FIG. 11, the second data cartridge C2 is connected to the first recording / reproducing apparatus D1 by the arrow a.
In the case of erroneous insertion from the direction, the pair of left and right protrusions 44, which are the erroneous insertion preventing means 36 formed on the base plate 2, come into contact with the pair of left and right cartridge front-rear position restricting portions 26, and the second data The cartridge C2 cannot be completely inserted into the cartridge insertion space 24 to the proper position in the arrow a direction.

Therefore, the pair of left and right cartridge positioning rollers 28 cannot press the front ends 14a of the pair of left and right notches 14 in the direction of arrow d, and the second data cartridge C2 is locked in the cartridge insertion space 24. Can not do it. Further, the cartridge-in switch 34 cannot detect the second data cartridge C2.

Therefore, the second recording / reproducing apparatus D1 is connected to the second recording / reproducing apparatus D1.
It is possible to prevent erroneous insertion of the data cartridge C2 in the direction of arrow a.

As shown in FIG. 10, in the second recording / reproducing apparatus D2, the pair of left and right cartridge front-rear position restricting portions 26 are displaced inside the pair of left and right convex portions 44 of the second data cartridge C2. As a result, the second data cartridge C2 can be correctly inserted to the regular position in the direction of the arrow a in the cartridge insertion space 24, and the cartridge-in switch 34 can detect it.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made based on the technical idea of the present invention.

[0057]

The data cartridge of the present invention constructed as described above has the following effects.

According to a first aspect of the present invention, the second data cartridge developed to expand the tape width of the magnetic tape to increase the recording capacity is replaced by the current first data cartridge having a small magnetic tape width. An erroneous insertion preventing means for preventing erroneous insertion into the current first recording / reproducing apparatus for recording / reproducing is provided, and the second data cartridge is carelessly erroneously inserted into the current first recording / reproducing apparatus. Since it was made possible to prevent it from being done, by the mistaken insertion,
It is possible to prevent the magnetic tape of the second data cartridge from being damaged.

According to the second to fourth aspects, the erroneous insertion preventing means is constituted by the bent portion formed on the base plate of the second data cartridge, and the left and right directions of the base plate of the second data cartridge are defined. The erroneous insertion preventing means is constituted by enlarging the width of the second data cartridge, and the erroneous insertion preventing means is constituted by a pair of left and right convex portions projecting from the left and right end portions of the front end edge of the second data cartridge. It is simple, easy to manufacture and low in cost.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view and side view showing a second data cartridge in a first embodiment of a data cartridge of the present invention.

FIG. 2 is a partially cutaway plan view showing an inserted state of a second data cartridge into the first recording / reproducing apparatus in the first embodiment.

FIG. 3 is a partially cutaway plan view for explaining prevention of erroneous insertion of a second data cartridge into the first recording / reproducing apparatus in the first embodiment.

4 (A) is a sectional view taken along the line AA of FIG. 2, and FIG. 4 (B) is a sectional view taken along the line BB of FIG.

FIG. 5 is a partially cutaway plan view showing a second data cartridge in the second embodiment of the data cartridge of the present invention.

FIG. 6 is a partially cutaway plan view for explaining an erroneous insertion of the second data cartridge into the first recording / reproducing apparatus in the first embodiment.

FIG. 7 is a partially cutaway plan view showing a second data cartridge in the third embodiment of the data cartridge of the present invention.

FIG. 8 is a partially cutaway plan view showing a second data cartridge in the fourth embodiment of the data cartridge of the present invention.

FIG. 9 is a partially cutaway plan view for explaining prevention of erroneous insertion of a second data cartridge into the first recording / reproducing apparatus in the fourth embodiment.

FIG. 10 is a partially cutaway plan view showing a second data cartridge and a second recording / reproducing apparatus in a fifth embodiment of the data cartridge of the present invention.

FIG. 11 is a partially cutaway plan view for explaining prevention of erroneous insertion of a second data cartridge into the first recording / reproducing apparatus in the fifth embodiment.

FIG. 12 is an exploded perspective view showing a current first data cartridge.

FIG. 13 is a perspective view illustrating an outer diameter dimension of a current first data cartridge.

FIG. 14 is a partially cutaway plan view showing a current first data cartridge.

FIG. 15 is a partially cutaway plan view showing a state in which the current first data cartridge is inserted into the first recording / reproducing apparatus.

16A is a sectional view taken along the line CC of FIG. 15, and FIG. 16B is a sectional view taken along the line DD of FIG. 15C is a cross-sectional view taken along the line EE of FIG.

17A and 17B are drawings showing the positional relationship between the narrow magnetic tape of the first data cartridge and the magnetic head of the first recording / reproducing apparatus, and FIG.
Is the wide magnetic tape of the second data cartridge and the first
2 is a drawing showing the relationship with the magnetic head of the recording / reproducing apparatus of FIG.

[Explanation of symbols]

C1 First data cartridge C2 Second data cartridge D1 First recording / reproducing device D2 Second recording / reproducing device 1 Cartridge 2 Base plate 2c Left and right ends of base plate 3 Top cover 4 Tape reel 5 Magnetic tape 5a Magnetic tape Tape winding part 7 Drive roller 8 Corner roller 9 Drive belt 9a Drive belt drive part 14 Positioning notch 23 Cartridge insertion port 24 Cartridge insertion space 25 Base plate insertion groove 26 Cartridge front-back position regulation part 27 Cartridge vertical position regulation part 28 Cartridge Positioning Roller 32 Magnetic Head 34 Cartridge In Switch 36 Wrong Insertion Prevention Means 37 Bent Part Constituting Wrong Insertion Prevention Means 40 Overhanging Part Constituting Wrong Insertion Prevention Means 44 Convex Part Wrong Wrong Insertion Prevention Means W ₁ small magnetic tape Width of tape width W ₂ Significant tape width of magnetic tape

Claims (4)

[Claims] 1. A cartridge comprising a base plate and an upper cover, a pair of tape reels rotatably supported in the cartridge, a drive roller and a pair of corner rollers, and the pair of tape reels. In a state in which the magnetic tape wound around the tape is wound around the drive roller and the corner roller in a substantially T shape, and the pair of drive portions are pressed against the outer circumference of the tape winding portion of the pair of tape reels. A data cartridge having a drive belt driven by the drive roller, comprising: a first data cartridge having a small tape width of the magnetic tape, and a second data cartridge having a large tape width of the magnetic tape, Prevents erroneous insertion of the second data cartridge into a recording / reproducing device that records and reproduces the first data cartridge. Data cartridge erroneous insertion prevention means is characterized in that provided in the second data cartridge. 2. The data cartridge according to claim 1, wherein the erroneous insertion preventing means is constituted by a bent portion formed on the base plate of the second data cartridge. 3. The data cartridge according to claim 1, wherein the erroneous insertion preventing means is configured by enlarging the width of the base plate of the second data cartridge in the left-right direction. 4. The data cartridge according to claim 1, wherein the erroneous insertion preventing means is constituted by a pair of left and right convex portions projecting at both left and right end portions of a front end edge of the second data cartridge.