JPH04163776A - Tape cartridge - Google Patents

Abstract

PURPOSE:To prevent the data breakdown of a tape due to the discharge of static electricity charged by executing antistatic treatment to a contact surface with a roller of a belt. CONSTITUTION:A flat ring 22 is punched through press working from a sheet- shaped raw fabric 21 extrusion-molded by a thermoplastic synthetic resin such as a polyurethane resin, and the flat ring 22 is oriented in a cylindrical ring shape, thus forming a belt 9. One surface 21a of the raw fabric 21 is coated previously with an antistatic agent 23 at that time, and the flat ring 22 is oriented in the cylindrical ring shape so that the antistatic agent 23 is used as the inner surface of the cylindrical belt 9, i.e. a contact surface 9a to rollers 7, 8. Accordingly, the charging of static electricity to both the contact surface 9a of the belt 9 and the belt winding surfaces 7a, 8a of the rollers 7, 8 at a time when the belt 9 is driven at high speed and a magnetic tape is wound in a cartridge at high speed is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention is a tape cartridge that is most suitable for application to a data cartridge for recording CPU data, for example, and in which the tape is It relates to a reel that is rotationally driven.

[Summary of the invention]

The present invention includes a tape winding section wound around a tape reel;
a tape cartridge having a heald wound between a plurality of rollers and pressed against the outer periphery of the tape winding section, and configured such that the belt drives the tape reel through the tape winding section; According to the present invention, charging between the belt and the roller can be prevented.

[Conventional technology]

As a data cartridge for recording CPU data,
For example, Japanese Patent Publication No. 52-14976 is known.

As shown in FIGS. 4 and 5, this type of data cartridge has a cartridge 1 with a thin box-shaped top cover 3, which is the upper half, on a base plate 2, which is made of metal such as an aluminum plate, which is the lower half. It is formed by fastening, etc. Moreover, the cover 3 has a horizontal top wall 3a and a vertical front wall 3.
b, the rear wall 3C and both left and right side walls 3d are integrally molded from a synthetic resin having translucency. A pair of left and right tape reels 4 are rotatably supported on the base plate 2, and a magnetic chip 15, which is a tape, is wound around both reels 4. The magnetic tape 5 is guided by a pair of left and right tape guides 6 attached to the base plate 2, and is stretched along the rear side of the front wall 3b. Further, a belt drive roller 7 and a pair of left and right heald guide rollers 8 are rotatably supported on the base plate 2 at approximately the center on the front side and at both right and left ends at the rear side. An elastic heald 9 is wound around the belt drive roller 7 and both belt guide rollers 8 with strong tension in a substantially T-shape. A part of this heald 9 is a magnetic tape 5 wound around both tape reels 4.
The tape is in pressure contact with the outer periphery of the pair of tape winding portions 5a.

Next, when this data cartridge is installed in the recording/reproducing device, the base plate 2 is opened and closed so as to open and close the notch 10 formed at one end of the front side of the base plate 2 and the upper cover 3.
and an opening/closing door 11 rotatably attached between the top cover 3
The lid is opened in the direction of arrow a as shown by the dashed line, and the magnetic head 12 on the recording/reproducing device side is inserted into the notch 10 and comes into contact with the magnetic tape 5. At the same time, the drive roller 13 on the recording/reproducing device side is inserted into the opening 14 provided in the upper cover 3, and the large diameter roller portion 7b is integrally formed on the upper part of the belt winding surface 7a of the belt drive roller. is crimped around the outer periphery of the When the belt drive roller 7 is rotationally driven by the drive roller 13 in the direction indicated by the arrow C, and the belt 9 is driven in the direction indicated by the arrow C, the belt 9 winds both tape reels through both tape winding portions 5a. 4 is rotationally driven in the direction of the arrow d, the magnetic tape 5 is run in the direction of the arrow e at a relatively high speed of 25 to 120 inches/sec, and the magnetic head 12 performs recording and reproduction on the magnetic tape 5.

[Problem to be solved by the invention]

This type of data cartridge differs from the 7R and audio tape cassettes in that the magnetic tape 5 is run at a relatively high speed during recording and reproduction, and the belt 9 is also driven at a high speed. Therefore, since high durability is required of the belt drive roller 7, belt guide roller 8, and belt 9, these rollers 7.8 and belt 9 are all made of synthetic resin.

That is, as shown in FIG. 5, a plurality of support shafts 15 made of metal such as stainless steel are implanted on the base plate 2 made of metal such as aluminum plate, and rollers 7.8 made of synthetic resin are attached to these. Rotatably inserted through the central hole 16, these rollers 7.
A belt 9 made of synthetic resin is wrapped around the belt 8, and the center hole 16 is filled with grease 17.

Therefore, conventionally, the belt wrapping surfaces 7a, 8a of the rollers 7.8
Since the space between the base plate 2 and the base plate 2 is insulated, especially when the belt 9 is driven at high speed to wind the magnetic tape 5 into the cartridge 1 at high speed in an automatic data cartridge assembly machine, Due to the friction between roller 7.8 and belt 9,
The belt-wrapping surfaces 7a, 8a of these rollers 7.8 and the inner surface of the belt 9, which is the contact surface 9a with respect to the roller 7.8, were likely to be charged with a large amount of static electricity. If a data cartridge charged with static electricity is used in a dry atmosphere, discharge will occur after the charge has increased to a value that can destroy the data recorded on the magnetic tape 5, which is a serious problem. There were problems that caused accidents.

SUMMARY OF THE INVENTION An object of the present invention is to provide a tape cartridge that can prevent static electricity from being charged between a belt and a roller.

[Means to solve the problem]

In order to achieve the above object, a first aspect of the tape cartridge of the present invention is that the contact surface of the belt with the roller is subjected to antistatic treatment.

According to a second aspect of the present invention, the contact surface of the belt that has been subjected to the antistatic treatment and the non-contact surface that is opposite to the contact surface that has not been subjected to the antistatic treatment are color-coded.

[Effect]

Claim 1 of a tape cartridge configured as above.
Since the contact surface of the belt with the roller is subjected to antistatic treatment, static electricity can be prevented from being charged between the belt and the roller.

Claim 2 provides a contact surface of the belt subjected to antistatic treatment;
Non-contact surfaces that have not been subjected to antistatic treatment can be easily distinguished by color coding.

〔Example〕

Hereinafter, one embodiment of a data cartridge to which the present invention is applied will be described with reference to FIGS. 1 to 3.

Note that the same structural parts as in the conventional example shown in FIGS. 4 and 5 are given the same reference numerals, and redundant explanation will be omitted.

First, a method of processing the belt 9 will be explained with reference to FIG.

A flat ring 22 is punched out by press working from a sheet-like original fabric 21 extruded from a thermoplastic synthetic resin such as polyurethane resin, and the flat ring 22 is stretched into a cylindrical ring shape to form a heald 9.

At this time, one surface 21a of the original fabric 21 is coated with an antistatic agent 23 in advance, and the antistatic agent 23 is applied to the inner surface of the cylindrical belt 9, that is, the contact surface 9a with respect to the roller 7.8. The flat ring 22 is stretched into a cylindrical ring shape.

Note that the antistatic agent 23 includes surfactants such as cationic activators and anionic activators.

Then, these antistatic agents 23 are diluted with a solvent such as ethanol, the solution is coated on one side 21a of the original fabric 21, and the finished product is dried.

Incidentally, after processing the belt 9, it is also possible to coat the contact surface 9a with the above solution. Further, the electrical resistance of the contact surface 9a of the belt 9 coated with the antistatic agent 23 is 101 oΩ or less.

In addition, at this time, by applying coloring (coloring) in a different color to the other side 21b of the original fabric 21 in advance in a color different from that of the one side 21a, the belt 9 stretched into a cylindrical ring shape as described above can be formed. The contact surface 9a coated with the antistatic agent 23 and the non-contact surface 9b on the opposite side not coated with the antistatic agent 23 can be color-coded.

The belt 9 formed as described above has a contact surface 9a coated with the antistatic agent 23, and a contact surface 9a coated with the antistatic agent 23.
The uncoated non-contact surface 9b can be easily distinguished by color coding.

Therefore, when assembling the data cartridge, as shown in FIG. 4, when the belt 9 is wrapped around the rollers 7 and 8 in a substantially T-shape with strong tension, the heald is attached as shown in FIGS. The contact surface 9a coated with the antistatic agent 23 of 9 is connected to the belt-wrapped surface 7a of the roller 7.8.
, 8a can be wrapped correctly and easily. At this time, the non-contact surface 9b of the belt 9, which is not coated with the antistatic agent 23, is brought into contact with the pair of tape winding portions 5a in FIG.

According to the data cartridge assembled as described above, the belt 9 is rotated by the rotation of the belt drive roller rough.
When running between rollers 7.8, contact surface 9 of belt 9
The antistatic agent 23 coated on the roller 7
．． The image is transferred to the belt wrapping surfaces 7a and 8a of No.8.

Therefore, when the belt 9 is driven at high speed to wind the magnetic tape 5 into the cartridge 1 at high speed in an automatic cartridge assembly machine, the contact surface 9a of the belt 9 and the belt winding surface of the roller 7.8 are It is possible to prevent static electricity from being charged to both 7a and 8a. Therefore, the inconvenience that the data recorded on the magnetic tape 5 is destroyed due to discharge of static electricity does not occur at all.

Note that since the non-contact surface 9b of the heald 9 that comes into contact with the tape winding portion 5a of the magnetic tape 5 is not coated with the antistatic agent 23, the antistatic agent 23 is transferred to the magnetic tape 5 and the magnetic tape is It does not affect the durability of 5.

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

〔Effect of the invention〕

Since the present invention is configured as described above, it produces the effects described below.

According to claim 1, antistatic treatment is applied to the contact surface of the heald with the roller to prevent static electricity from being charged between the heald and the roller, so that data on the tape due to discharge of the charged static electricity can be prevented. Destruction can be prevented and reliability can be improved.

Claim 2 provides a contact surface of the heald subjected to antistatic treatment;
Since the non-contact surface that has not been treated with anti-static treatment can be easily distinguished by color coding, when assembling the cartridge, when wrapping the heald between multiple rollers, the contact surface of the belt that has been treated with anti-static treatment can be easily distinguished. can be accurately and easily wrapped around the belt-wrapping surfaces of multiple rollers. In other words, the non-contact surface of the heald that has not been subjected to antistatic treatment may be wrapped around the heald wrapping surface of multiple rollers.
Since it is possible to prevent the belt from being wound upside down, it is possible to reliably prevent static electricity from being charged between the belt and the roller, and because the heald is wound inside out,
It is also possible to prevent the inconvenience of the antistatic agent applied to the contact surface of the heald being transferred to the tape and affecting the durability of the tape.

[Brief Description of the Drawings] Figures 1 to 3 show an embodiment of the present invention, and Figure 1 is a schematic perspective view illustrating a heald processing method;
FIG. 2 is a sectional view of the heald drive roller and the belt, and FIG. 3 is a sectional view of the heald X inner roller and the heald. FIG. 4 is a partially cutaway plan view showing a data cartridge, and FIG. 5 is a sectional view taken along the line A--A in FIG. 4 showing a conventional belt. In addition, in the symbols used in the drawings, 4---------- Tape reel 5--
−−−−・−・−1−−−・・−Magnetic tape (tape)
5a------------Tape winding section 7-----------1----Belt drive roller 8------- -----------Belt guide roller 9-
-------------Belt 9a--=------One contact surface 9b----m----------Non-contact surface 23--
----------An antistatic agent.

Claims (2)

[Claims] (1) The tape winding part is wound around a tape reel, and the belt is wound between a plurality of rollers and pressed against the outer periphery of the tape winding part, and the tape winding part is wound by the belt. What is claimed is: 1. A tape cartridge configured to rotationally drive the tape reel through a belt, characterized in that a surface of the belt in contact with the roller is subjected to antistatic treatment. (2) The tape cartridge according to claim 1, wherein the contact surface of the belt that has been subjected to the antistatic treatment and the non-contact surface that has not been subjected to the antistatic treatment on the opposite side thereof are color-coded.