JP3003171B2 - Tape cartridge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a tape cartridge optimally applied to, for example, a data cartridge for recording data of a CPU, and is provided with a belt through a tape winding section. The tape reel is driven to rotate.

[Summary of the Invention]

The present invention includes a tape winding portion wound around a tape reel, and a belt wound around a plurality of rollers and pressed against the outer periphery of the tape winding portion, and the tape is wound by the belt. In the tape cartridge configured to rotate and drive the tape reel via a winding section, the roller can be prevented from being charged.

[Conventional technology]

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

In this type of data cartridge, as shown in FIGS. 3 and 4, a thin box-shaped upper cover 3 as an upper half is screwed onto a metal base plate 2 such as an aluminum plate as a lower half. It is formed by stopping or the like.
The upper cover 3 has a horizontal top wall 3a and a vertical front wall 3a.
b, the rear wall 3c and the left and right side walls 3d are integrally formed of 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 tape 5 as a tape is wound around these two 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. A belt driving roller 7 and a pair of left and right belt guide rollers 8 are rotatably supported at substantially the center on the front side and substantially right and left ends on the rear side of the base plate 2. An elastic belt 9 is wound between the belt driving roller 7 and both belt guide rollers 8 in a substantially T-shape with a strong tension. A part of the belt 9 is in pressure contact with the outer periphery of a pair of tape winding portions 5a of the magnetic tape 5 wound on the two tape reels 4.

Next, when this data cartridge is mounted on the recording / reproducing apparatus, the base plate 2 is opened and closed so as to open and close a notch 10 formed at one end on the front side of the base plate 2 and the upper cover 3.
The opening and closing door 11 rotatably mounted between the upper cover 3 is opened in the direction of the arrow a as shown by a dashed line, and the magnetic head 12 on the recording / reproducing apparatus side is inserted into the notch 10 and the magnetic tape is inserted. Touch 5 At the same time, the driving roller 13 on the recording / reproducing apparatus side is inserted into the opening 14 provided in the upper cover 3 to form a large-diameter roller unit integrally formed on the belt winding surface 7a of the belt driving roller 7. It is crimped to the outer periphery of 7b. When the belt driving roller 7 is driven to rotate in the direction of arrow b by the driving roller 13 and the belt 9 is driven in the direction of arrow c, the belt 9 causes the belt 9 to move through both tape winding portions 5a. The two tape reels 4 are driven to rotate in the direction of arrow d, and the magnetic tape 5 travels in the direction of arrow e at a relatively high speed of 25 to 120 in / sec. Is performed.

[Problems to be solved by the invention]

In this type of data cartridge, unlike a tape cassette for VTR or audio, the belt 9 is driven at a high speed because the magnetic tape 5 runs at a relatively high speed during recording and reproduction. Therefore, since the belt driving roller 7, the belt guide roller 8 and the belt 9 are required to have high durability, these rollers 7, 8 and the belt 9 are all made of synthetic resin.

That is, as shown in FIG. 4, a plurality of spindles 15 made of a metal such as stainless steel are planted on a base plate 2 made of a metal such as an aluminum plate, and rollers 7 and 8 formed of a synthetic resin are placed at the center thereof. Hole
A synthetic resin belt 9 is wound around these rollers 7 and 8 so that the center hole 16 is filled with grease 17.

Therefore, conventionally, since the belt winding surfaces 7a and 8a of the rollers 7 and 8 and the base plate 2 are insulated, the belt 9 is driven at a high speed by an automatic data cartridge assembling machine. When the magnetic tape 5 is wound into the cartridge 1 at high speed, the friction between the rollers 7 and 8 and the belt 9 causes the belt winding surfaces 7a and 8a of the rollers 7 and 8 and the inner surface of the belt 9 to rotate. A large amount of static electricity easily charged the roller contact surface 9a. When the data cartridge charged with the static electricity is used in an atmosphere where the air is dry, the electric charge is increased to a certain value, and then a discharge occurs to destroy the data recorded on the magnetic tape 5. There was a problem that caused a serious accident.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a tape cartridge capable of preventing static electricity from being charged on a belt winding surface of a roller.

[Means for solving the problem]

In order to achieve the above object, a tape cartridge of the present invention has a belt around which a tape reel is rotationally driven via a tape winding section, and at least a belt winding surface of a plurality of rollers is formed of an antistatic agent. It is.

(Operation)

In the tape cartridge configured as described above, since at least the belt winding surface of the roller is formed of the antistatic agent, it is possible to prevent static electricity from being charged on the belt winding surface of the roller.

〔Example〕

Hereinafter, an embodiment of a data cartridge to which the present invention is applied will be described with reference to FIG. 1 and FIG. The third
The same components as those of the conventional example shown in FIG. 4 and FIG.

In order to obtain high reliability of the belt drive roller 7 and the belt guide roller 8, the rollers 7 and 8 are formed of a synthetic resin such as acrylate or amide, and these rollers 7 and 8 are wound around the belt. The entire roller surface including the surfaces 7a and 8a is formed of an antistatic agent 18.

Note that examples of the antistatic agent 18 include surfactants such as a cationic surfactant and an anionic surfactant. Then, the antistatic agent 18 is diluted with a solvent such as ethanol, and the solution is coated on the surfaces of the rollers 7 and 8 or treated by dipping (jap dipping). , 8 antistatic agent on the roller surface
18 coatings can be formed. In addition, antistatic agent 18
May be kneaded into a synthetic resin to perform injection molding of the rollers 7 and 8.

As described above, if at least the belt wrapping surfaces 7a and 8a of the rollers 7 and 8 are formed of the antistatic agent 18, the roller contact surface 9a of the belt 9 wound around them has an antistatic agent.
18 is transcribed.

Accordingly, when the belt 9 is driven at a high speed by the automatic cartridge assembling machine and the magnetic tape 5 is wound into the cartridge 1 at a high speed, the belt winding surfaces 7a and 8a of the rollers 7 and 8 and the belt 9 Of the roller contact surface 9a can be prevented from being charged with static electricity. Therefore, there is no problem that the charged static electricity is discharged and the data recorded on the magnetic tape 5 is destroyed.

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

〔The invention's effect〕

The present invention is configured as described above, and has the following effects.

Since the belt for rotating the tape reel is wound around the tape winding section and at least the belt winding surface of the plurality of rollers is formed of an antistatic agent, the static electricity is charged on the belt winding surface of the rollers. Can prevent the tape data from being destroyed due to the discharge of static electricity.
Reliability can be improved.

[Brief description of the drawings]

1 and 2 show an embodiment of the present invention. FIG. 1 is a sectional view of a belt driving roller, and FIG. 2 is a sectional view of a belt guide roller. FIG. 3 is a partially cutaway plan view of the data cartridge, and FIG.
FIG. 3 is a cross-sectional view taken along the line AA of FIG. 3 showing a conventional roller. In the reference numerals used in the drawings, 4: tape reel 5: magnetic tape (tape) 7: belt drive roller 7a: belt winding surface 8: belt guide roller 8a: belt winding surface 9: belt 9a: roller contact surface 18: antistatic agent

Claims (1)

(57) [Claims] 1. A tape winding portion wound around a pair of tape reels and a plurality of driving and guiding rollers wound around the tape winding portion and pressed against the outer periphery of the tape winding portion to form a substantially T-shape. And a tape cartridge having a belt disposed thereon and configured to rotate the tape reel by the belt through the tape winding section. At least a belt winding surface of the roller is charged with a surfactant. A tape cartridge characterized in that a film is formed by diluting and coating with an inhibitor.