JPH0721735A - Data cartridge - Google Patents

Abstract

(57) [Summary] [Purpose] A data cartridge using a wide magnetic tape is used in a current recording / reproducing apparatus developed for a current data cartridge using a narrow magnetic tape. To prevent. [Structure] A cartridge case 1 composed of a base plate 2 and an upper cover 3, and the cartridge case 1
A magnetic tape movably mounted therein, a drive belt for running the magnetic tape, and a file protect file slidably mounted on the cartridge case.
A data cartridge having a lever 42 and a width of the magnetic tape wider than the width of the magnetic tape of the reference data cartridge, in a state of being inserted into a recording / reproducing device for the reference data cartridge. A sensor non-operation section 41 for keeping the file protect sensor 35 provided in the apparatus in a non-detection state is provided on the front wall 3a of the upper cover 3.

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, as a data cartridge for recording CPU data at a high density, for example, Japanese Patent Publication No.
Japanese Patent No. 14976 is known.

A conventional data cartridge of this type (hereinafter referred to as the first data cartridge) C1 is shown in FIG.
As shown in FIG. 16, the cartridge case 1 is formed by screwing a thin box-shaped upper cover 3 which is an upper half formed of a synthetic resin having a light-transmitting property on a base plate 2 made of an aluminum plate or the like which is a lower half. It is formed by stopping. A pair of left and right tape reels 4 and 4 with upper and lower flanges 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 and 4. It has been turned. This magnetic tape 5 is guided by three flanged tape guides 6 ... 6 attached to the base plate 2 and hung along the inside of the front wall 3a of the upper cover 3.
Further, the driving roller 7 and a pair of left and right corner rollers 8 and 8 formed of synthetic resin at substantially the central portion of the front edge 2a on the base plate 2 and both left and right corner portions on the rear edge 2b side.
Is rotatably supported. An elastic drive belt 9 formed of a rubber belt or the like is wound between the drive roller 7 and the pair of left and right corner rollers 8 and 8 in a substantially T shape with a strong tension. A pair of left and right drive portions 9a, 9a between the drive roller 7 of the drive belt 9 and both corner rollers 8, 8 are a pair of left and right tapes of the magnetic tape 5 wound around the tape reels 4, 4. It is pressed against the outer circumferences of the winding parts 5a, 5a.

A pair of left and right tape reels 4, 4 and three rollers 7, 8, 8 are provided on the base plate 2 and are vertically planted by press fitting or the like. It is rotatably supported by. Then, inside the running path of the magnetic tape 5, the optical detection mirror 1 at the tape end is provided.
2 is attached.

The left and right side walls 3b, 3 of the upper cover 3
On the outer surface of b, a pair of left and right groove-like portions 13, 13 cut in parallel from the front wall 3a are formed in parallel. The left and right end portions 2c of the base plate 2 and the groove portion 1 on the front end side of the 2c.
A pair of left and right positioning notches 14 and 14 are formed at positions corresponding to the insides of 3 and 13.

Further, a notch having a substantially trapezoidal shape is formed on one side of the drive roller 7 on the side of the front edge 2a of the base plate 2 so as to extend over the base plate 2 and the ceiling wall 3c of the upper cover 3. A head insertion hole 15 is formed, and this head insertion hole 1
An opening / closing door 16 for opening / closing 5 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 above the small-diameter roller portion 7a around which the drive belt 9 is wound.
Is integrally molded, and the front side of the large-diameter roller portion 7b is a roller insertion hole 18 formed in the front wall 3a of the upper cover 3.
It is exposed inside.

As a recording / reproducing apparatus for recording / reproducing the first data cartridge C1 of this type, as shown in FIG. 14, a front insertion type in which the first data cartridge C1 is inserted from the front surface 1a side in the direction of arrow a Recording / playback device D
1 is widely used.

This front insertion type recording / reproducing apparatus D1
Has a cartridge insertion portion (space) 24 formed horizontally in a cartridge insertion opening 23 formed in the front panel 22, and has a pair of left and right base plate insertion grooves 25a, 25a on its left and right side walls 24a, 24a. And the fixed block portions 25b located on these insertion grooves 25a, 25a,
25b are formed horizontally and in parallel. Then, as shown in FIG. 16, a pair of left and right cartridge front and rear position restricting portions 2 are provided at the ends of the pair of left and right base plate insertion grooves 25a, 25a on the arrow a direction side which is the cartridge insertion direction.
6, 26 are integrally formed with the left and right side walls 24a, 24a. In addition, a pair of left and right base plate insertion grooves 25a, 25
27. The three cartridge vertical position restricting portions 27 ... 27 formed of downward convex portions are integrally formed at a total of three locations on the downward upper side surface of a. A pair of left and right cartridge positioning rollers 28, 28 are attached to the pair of left and right base plate insertion grooves 25a, 25a near the pair of left and right cartridge front-rear position restricting portions 26, 26.

The pair of left and right cartridge positioning rollers 28, 28 are arranged in a pair of left and right notches 29, 29 formed in the left and right side walls 24a, 24a. Then, a pair of left and right base plate insertion grooves 25a, 25
One end of a pair of left and right leaf springs 30, 30 parallel to a is fixed to the lower surfaces of the left and right side walls 24a, 24a, and the other end of the pair of left and right leaf springs 30, 30 has a pair of left and right cartridge positioning rollers 28, 28 is rotatably supported. Then, the pair of left and right leaf springs 30 and 30 are used to pair the left and right cartridge positioning rollers 28 and 2 with each other.
8 is moved and urged in the upward arrow b direction. A leaf spring 31 is attached to the center of the bottom wall 24b of the cartridge insertion portion 24 at a position deviated to the cartridge insertion opening 23 side to urge the cartridge 1 in the direction of arrow b.

Then, as shown in FIGS. 15 to 17, the front edge 2a of the base plate 2 of the first data cartridge C1.
The first data cartridge C1 is inserted from the cartridge insertion port 23 of the recording / reproducing apparatus D1 into the cartridge insertion portion 24 in the direction of arrow a.

At this time, the left and right ends 2c of the base plate 2 are inserted into the pair of left and right base plate insertion grooves 25a, 25a from the direction of arrow a, so that the base plate 2 is placed on the leaf spring 31 in the central portion. Just before starting the insertion, the operated portion (free end portion) 16a of the opening / closing door 16 is inserted into one side wall 24a.
The opening / closing door 16 is opened in the direction of arrow c against the torsion coil spring about the fulcrum shaft 17 as shown by the alternate long and short dash line in FIG.

Then, as shown in FIGS. 16 and 17,
The first data cartridge C1 is the cartridge insertion portion 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, as shown in FIG. 17A, 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, 26 in the direction of arrow a. At the same time as the insertion of the data cartridge C1 is stopped, the pair of left and right cartridge positioning rollers 28, 28 are inserted into the pair of left and right positioning notches 14, 14 of the base plate 2 by the pair of left and right leaf springs 30, 30. It is engaged from below in the direction of arrow b. Then, the pair of left and right cartridge positioning rollers 28, 28 press the front ends 14a of the pair of left and right positioning notches 14, 14 diagonally upward and upward in the direction of arrow d.

As a result, the pair of left and right positioning rollers 2
The entire first data cartridge C1 is urged to move in both directions a and b in the cartridge insertion portion 24 by the leaf springs 8 and 28 and the central leaf spring 31.
The front end edge 2a of the base plate 2 is elastically pressed by the pair of left and right cartridge front and rear position restricting portions 26, 26 from the direction of the arrow a, and at the same time, the left and right end portions 2c, 2c of the base plate 2 have three cartridge vertical position restricting portions 27 ... The first data cartridge C1 is elastically pressed by the arrow 27 in the direction of the arrow b, and the first data cartridge C1 is positioned in the cartridge insertion portion 24 with high accuracy. Then, a pair of left and right cartridge positioning rollers 28, 28
Thus, the first data cartridge C1 is locked in the cartridge insertion portion 24.

Upon completion of insertion of the first data cartridge C1, as shown in FIGS.
The magnetic head 32 and the magnetic tape drive roller 33 mounted on the first side are relatively inserted into the head insertion hole 15 and the roller insertion hole 18 from the direction of the arrow a ', and the magnetic head 32 and the drive roller 33 are The magnetic tape 5 and the large-diameter roller portion 7b of the drive roller 7 are pressure-bonded. The magnetic tape drive roller 33 is formed of a rubber roller or the like.

As described above, when the first data cartridge CI is inserted into the cartridge insertion portion 24, the cartridge-in sensor provided on the front wall 3a of the upper cover 3 of the first data cartridge CI. (switch)
The pressing portion (hereinafter referred to as an insense area) 3d presses the cartridge-in sensor 34, and the cartridge-in sensor 34 detects the completion of insertion of the first data cartridge CI. On the other hand, a file protect sensor (switch) disposed above the cartridge-in sensor 34 by a file protect lever 42 slidably mounted above the insense area 3d of the cartridge case 3. The file ready state is detected by 35.

As described above, the cartridge-in-
When the sensor 34 and the file protect sensor 35 detect that the cartridge is in the file-enabled state, the first recording / reproducing command signal from the CPU causes the magnetic tape drive motor to drive the magnetic tape drive motor as shown in FIG. The drive roller 7 is rotationally driven in the direction of arrow e, for example, via the magnetic tape drive roller 33, the drive belt 9 is rotationally driven in the direction of arrow f, and both drive units 9a and 9a move both tape winding units 5a and 5a. Through both tape reels 4, 4
Is rotationally driven in the direction of arrow f, the magnetic tape 5 is run in the direction of arrow g at a high speed of 25 to 120 inch / sec, and the magnetic head 32 records and reproduces data of the CPU on the magnetic tape 5. Has been done.

By the way, as the conventional first data cartridge C1 of this type, two types of cartridges are standardized: a small cartridge (hereinafter referred to as S type) and a large cartridge (hereinafter referred to as L type). Both the S and L type cartridges have a tape width W ₁ of the magnetic tape 5 as shown in FIGS. 17A and 17B.
Was standardized to a narrow width of 1/4 inch.

Incidentally, as shown in FIG. 14, each dimension of 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 is 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, as shown in part (C) of FIG. 17, the tape width W ₂ of the magnetic tape is changed without changing the outer diameter dimensions of the width X, the depth Y and the thickness Z of the first cartridge 1. It is conceivable to increase the recording capacity of the magnetic tape 5 by enlarging the recording tape to a wide width such as 8 inches.

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 parts (A) and (C) of FIG. Even if the tape width of _No. 5 is expanded from W ₁ to W ₂ , the height of these magnetic tapes 5 is reduced to the lower end 5b reference P ₁
Must be a, W ₂ with respect to the upper end 5c of the upper end 5c magnetic tape 5 having a width W ₁ of the magnetic tape 5 which is expanded to a width W ₂
It is displaced upward by a height H ₁ corresponding to −W ₁ .

On the other hand, as shown in parts (A), (B), and (C) of FIG. 17, the mounting height of the magnetic head 32 in the recording / reproducing apparatus D ₁ also depends on the upper limit position P ₂ and the lower limit position P _3. There is a variation in the height H ₂ between and.

[0025]

Therefore, a small width (1/4
Inch) Current 1st using W ₁ magnetic tape 5
When a new second data cartridge using the wide (8 mm) W ₂ magnetic tape 5 is erroneously inserted into the above-mentioned current recording / reproducing apparatus D1 developed for recording / reproducing the data cartridge C1 of Particularly, as shown in part (C) of FIG. 17, when the mounting height of the magnetic head 32 is lowered to the lower limit position P ₃ , the upper end of the magnetic head 32 which is relatively pressure-bonded from the direction of the arrow a ₁ Edge 32
To the upper end 5c of the magnetic tape 5 in its wide W ₂ from a lies off upwards, that would wounded by bending the upper end 5c of the wide W ₂ by the upper end edge 32a of the magnetic head 32, lethal There is a problem that it will be damaged.

The present invention has been made to solve the above problems, and was developed for a current data cartridge in which a data cartridge using a wide magnetic tape uses a narrow magnetic tape. It is an object of the present invention to provide a data cartridge which can be prevented from being erroneously used in the existing recording / reproducing apparatus.

[0027]

According to a first aspect of the present invention, there is provided a cartridge case composed of a base plate and an upper cover, a magnetic tape movably accommodated in the cartridge case, and the magnetic tape is run. A data cartridge including a drive belt and a file protect lever slidably attached to the cartridge case, and formed to have a width wider than that of the magnetic tape of the first data cartridge, which serves as a reference for the width of the magnetic tape. In the above, the sensor non-operation section for keeping the file protect sensor provided in the recording / reproducing apparatus for the above-mentioned data cartridge in the apparatus in the non-detection state is provided in the upper cover.

According to a second aspect of the present invention, in the data cartridge of the first aspect, the sensor non-operating portion is provided on the side of the file protect lever.

[0029]

According to the data cartridge of the present invention, even if the data cartridge is erroneously inserted into the existing recording / reproducing apparatus for the data cartridge, that is, the recording / reproducing apparatus for the data cartridge using the narrow magnetic tape, the sensor is not operated. Since the file protect sensor does not detect the file-enabled state due to the presence of the operation unit, the recording / reproducing apparatus does not operate.

In the data cartridge of the first aspect, the sensor non-operation portion formed by denting the side of the file protect lever is a so-called escape from the file protect sensor of the existing recording / reproducing apparatus. This prevents the file protect sensor from detecting the file ready status.

[0031]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to FIGS. Note that the same components as those in FIGS. 13 to 17 are designated by the same reference numerals, and overlapping description will be omitted.

FIG. 1 is a perspective view of a second data cartridge C2 which is a new data cartridge using a magnetic tape 5 having an increased recording capacity by expanding the tape width W ₂ to, for example, 8 mm, that is, the data cartridge of the present invention. Is shown. Then, the second data cartridge C2
The outer diameter dimensions X, Y, Z of the tape width W ₁ shown in FIG.
Is a current data cartridge using a 1/4 inch magnetic tape 5, which is a first data cartridge C1.
It is formed in the same size as.

The sensor non-operation section 4 is provided at one end of the front wall 3a of the upper cover 3 (the end opposite to the opening / closing door 16).
1 and a file protect lever 42 are provided.

The sensor non-operation section 41 uses the data cartridge C2 of the present invention for the current recording / reproducing apparatus D1, that is, the current data cartridge C1 using the 1/4 inch magnetic tape 5 for recording / reproducing. This is to prevent the file protect sensor 35 provided in the recording / reproducing apparatus D1 from detecting it when it is erroneously inserted into the apparatus D1.

In the sensor non-operating portion 41, a portion corresponding to the file protect sensor 35 at one end portion of the front wall 3a of the upper cover 3 has a depth G ₁ = 2.00 mm and a width W ₁ = 4. Over 83 mm and height H ₁ = 5.08 mm,
It is formed by recessing toward the rear wall side.

Further, the file protect lever 42 is attached to the side of the sensor non-operation part 41.

The above file protect lever 42
Is composed of a detection unit 43 and an operation unit 44 formed integrally with the detection unit 43.

The detecting portion 43 is inserted into a first groove portion 45 provided on the front wall 3a of the upper cover 3 adjacent to the sensor non-detecting portion 41.

The operation portion 44 is inserted into the second groove portion 46 provided on the upper surface wall of the upper cover 3.

The width W ₂ of the detecting portion 43 is 45 mm of the first groove portion.
Is formed to have a width of about 1/2 of the width W ₃ .

Then, the detecting section 43 detects whether the file is possible or not, depending on which of the left and right ends of the first groove 45 is located. Has become.

In FIG. 3, reference numeral 47 is an insense detection unit for operating the cartridge-in sensor 34.

The incense detector 47 is formed by utilizing a part of the front wall 3a of the upper cover 3.

The left and right side walls 3b of the upper cover 3 are
The outer surface of 3b is provided with a pair of left and right groove portions 13, 13.

As shown in FIGS. 6 to 7, the groove portions 13 and 13 have a height H ₂ = 8.4 mm from the position of the base plate 2 on the outer surfaces of the left and right side walls 3b and 3b, and the front wall. 3a length L ₁ = 48.41 mm, side wall 3b depth G ₂ =
It is formed by providing a recess of 3.56 mm.

As shown in FIG. 10, the height H ₂ of the groove portion 13 is set to the base plate insertion groove 2 of the recording / reproducing apparatus D1.
It is higher than the height H ₃ of the fixed block portion 25b above the 5a.

Therefore, the second data cartridge C2
Is inserted into the cartridge insertion portion 24 from the cartridge insertion opening 23 of the recording / reproducing device D1, the fixed block portion 25b and the groove portion 13 are introduced.

Then, the second data cartridge C
2, the front edge 2a of the base plate 2 has the pair of left and right base plate insertion grooves 25a, 25a of the recording / reproducing apparatus D1.
The cartridge is inserted until it comes into contact with the pair of left and right cartridge front-rear position restricting portions 26, 26 located at the rear end portion of the cartridge.

However, as described above, since the sensor non-operation section 41 is located at the portion corresponding to the file protect sensor 35 of the recording / reproducing apparatus D1, the file protect sensor 35 is not operated. Fileable status is not detected. Therefore, even if the cartridge-in sensor 34 detects the cartridge-in, the magnetic tape drive motor and the like do not operate, and the magnetic tape 5 is prevented from being fatally damaged.

In the embodiment shown in the drawings, the cartridge-in sensor 34 and the file protect sensor 3 are used.
Although the case where the limit switch is used is shown as 5, the cartridge-in sensor 34 is not limited to the limit switch, and a photo sensor or the like may be used.

Incidentally, of course, in the recording / reproducing apparatus used for the data cartridge C2 of the present invention, the file protect sensor 35 is provided at a position corresponding to the detecting portion 44 of the file protect lever 43.

[0052]

The data cartridge of the present invention has the following effects.

(1) The data cartridge according to claim 1 is
When inserted into the current recording / playback device used for data cartridges with different magnetic tape widths, the file protect sensor does not detect that a file is possible due to the presence of the sensor non-operation part. It does not work, and therefore damage to the magnetic tape due to the operation of the recording / reproducing apparatus can be prevented.

(2) A data cartridge according to claim 2 is
Since the position of the file protect lever of the existing data cartridge may be shifted laterally and the recessed portion may be provided in the shifted portion, it is not necessary to redesign the existing data cartridge drastically.

[Brief description of drawings]

FIG. 1 is a perspective view of a data cartridge.

FIG. 2 is a plan view of a main part in a file impossible state.

FIG. 3 is a front view of a main part in a file impossible state.

FIG. 4 is a plan view of a main part in a fileable state.

FIG. 5 is a front view of a main part in a fileable state.

FIG. 6 is a plan view of a data cartridge.

FIG. 7 is a side view of the data cartridge.

FIG. 8 is a front view of the data cartridge.

FIG. 9 is a plan view of a data cartridge and a recording / reproducing device.

FIG. 10 is a partially cutaway side view of the data cartridge and the recording / reproducing device.

FIG. 11 is a plan view showing a state in which a malfunction is prevented.

FIG. 12 is a partially cutaway side view showing a state in which a malfunction is prevented.

FIG. 13 is an exploded perspective view of a current data cartridge.

FIG. 14 is a perspective view of a current data cartridge.

FIG. 15 is a partially cutaway plan view of a current data cartridge.

FIG. 16 is a partially cutaway plan view showing a state in which a current data cartridge is inserted into a recording / reproducing apparatus.

17A is a cross-sectional view taken along the line AA of FIG. (B)
FIG. 17 is a sectional view taken along the line BB of FIG. (C) is CC of FIG.
FIG.

FIG. 18 is an explanatory diagram showing a positional relationship between magnetic tapes having different widths and a magnetic head of a recording / reproducing apparatus.

[Explanation of symbols]

 C1 ... First data cartridge C2 ... Second data cartridge D1 ... Recording / reproducing apparatus 1 ... Cartridge case 2 ... Base plate 3 ... Top cover 34 ... Cartridge-in sensor 35 ... File protect sensor 41 ... Sensor non-operation Part 42 ... File protect lever

Claims (2)

[Claims] 1. A cartridge case composed of a base plate and an upper cover, a magnetic tape movably accommodated in the cartridge case, a drive belt for running the magnetic tape, and a slidable cartridge case. A data cartridge having an attached file protect lever and having a width of the magnetic tape wider than the width of the magnetic tape of the standard data cartridge, to a recording / reproducing device for the standard data cartridge. A data cartridge, characterized in that a sensor non-operation part for keeping a file protect sensor provided in the device in a non-detection state in an inserted state is provided in an upper cover. 2. The data cartridge according to claim 1, wherein the sensor non-operation portion is provided on a side of a file protect lever.