JPH02137178A - Disk cartridge - Google Patents

Abstract

PURPOSE:To eliminate the sticking of dust due to electrostatic charge or the spark of electrostatic charge by electrically conducting a liner for cleaning, which has conductivity, to a recording and reproducing device. CONSTITUTION:A conductive liner 6 for cleaning is adhered and fixed with a conductive fitting member 5 by a conductive adhering material 18 and the fitting member 5 is electrically connected with a conductive shutter 14. This liner 6 for cleaning is grounded through the fitting member 5, the shutter 14, which is composed of a metallic member, and a positioning pin 17. Accordingly, a disk cartridge is not charged. Thus, the sticking of the dust due to the charge of the static electricity or the spark of the static electricity can be eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a disk cartridge, and more particularly to a cleaning liner that is set on the inner surface of a cartridge case and wipes away foreign matter such as dust attached to the surface of the disk. .

[Conventional technology]

Optical discs record information by irradiating the recording film with a light beam that enters from the outside of the substrate, and also detects changes in the intensity of reflected light from the recording film (or reflective film if used only for playback). Since the information is reproduced by the substrate, if foreign matter such as dust adheres to the surface of the substrate, the amount of light reaching the recording film and the amount of light reflected from the recording film (reflection film) decreases, deteriorating the recording/reproduction characteristics. do. In order to avoid such inconveniences, a disk cartridge has been proposed in which a cleaning liner is attached to the inner surface of the cartridge case to wipe the surface of the optical disk (see Japanese Patent Laid-Open No. 54883/1983).

[Problem to be solved by the invention]

By the way, since conventional cleaning liners are electrically insulating, they become charged when they come in sliding contact with optical discs, which causes dust and other particles to adhere to them, causing errors during writing and reading, and noise caused by sparks. There were some problems that occurred.

The object of the present invention is to solve the drawback of the cleaning liner being charged, which the conventional products had, and thereby provide a disk cartridge with excellent durability and reliability.

[Means to solve the problem]

To achieve this object, the present invention provides a disk cartridge including a cartridge case, a disk rotatably housed in the cartridge case, and a cleaning liner interposed between the disk and the cartridge case. , the cleaning liner is electrically conductive, and the cleaning liner is configured to be electrically connected to the recording/reproducing device of the disk cartridge.

[Effect]

In the present invention, since the cleaning liner is made conductive, charging of the cartridge and disk is eliminated, and problems such as dust adhesion due to static electricity and power down of the system due to static electricity sparks are solved.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a cleaning liner according to the present invention, FIG. 2 is a plan view of a disk cartridge, FIG. 3 is a plan view from the inside of a cartridge case to which a cleaning liner is attached, and FIG. FIG. 3 is a perspective view of a disc cartridge.

First, referring to FIG. 4, the cartridge case 3 has a head insertion hole 1 and a spindle insertion hole 2.
An optical disk 4 is rotatably housed therein, and a cleaning liner attachment member 5 is removably attached to one side of the head insertion hole 1.

The cleaning liner 6 is formed by bending a sheet-like flexible material such as nonwoven fabric or felt. Its cross-sectional shape is as shown in FIG.
and the wiping part 8 which stands up from the fixed part 7 are alternately folded back a plurality of times to form a substantially waveform. For example, the distance l between two adjacent wiping parts 8.8 is It is formed wider than the sum of the heights h of the portions 8°8. Moreover, the planar shape of this cleaning liner 6 is
As shown in FIG. 3 and FIG. 3, it has a substantially rectangular shape with a width W slightly larger than the recording area 11 of the optical disc 4 to which this is applied, and a length smaller than this, and the left and right end portions 12 , 13 are each formed in an arc shape having the same curvature as the innermost recording area 11a and the outermost recording area 11b.

The mounting member 5 is made by bending a thin plate such as a stainless steel plate, and includes an adhesive portion 5a, a connecting portion 5b, and a clamping portion 5c.

In the present invention, the cleaning liner 6 configured as described above is imparted with electrical conductivity.

in particular, (1) Woven and non-woven fabrics made of fibers plated with copper or other materials.

(2) Sponge plated with copper or other material.

(3) Woven fabrics and non-woven fabrics made of carbon and graphite fibers.

(4) Paper made from a mixture of carbon, graphite fiber, and synthetic fiber.

The conductive cleaning liner 6 is constructed by the following means.

As shown in FIG. 2, FIG. 3, and FIG. 4, or FIG. 5 and FIG. It is set in the cartridge case 3 by sandwiching it between the cartridge case 3 and the cartridge case 3.

FIG. 5 is a longitudinal cross-sectional view of a main part of a disk cartridge set in a drive device. In the figure, 14 is a shutter, 15 is a disk storage section, 16 is a spindle, and 17 is a conductive positioning pin.

FIG. 6 is an enlarged view of the main parts, and the conductive cleaning liner 6 and the conductive mounting member 5 are as follows:
The mounting member 5 and the conductive shirt shutter 14 are bonded and fixed by a conductive adhesive 18, and are electrically connected to each other. Although the shutter 14 is constructed by holding a shutter plate on a shutter slider, the shutter slider and the mounting member 5 may be electrically connected. and,
This cleaning liner 6 is grounded through the mounting member 5 and the positioning pin 17 of the shutter 149, which is made of a metal member.

This prevents the disk cartridge from being charged.

Further, as a method of grounding, the cartridge case 3 may be made conductive and the positioning pin 17 may be in contact with this cartridge case 3.

7 and 8 show modified examples, with FIG. 7 being a plan view of the main parts of the disk cartridge, and FIG. 8 being a longitudinal sectional view thereof.

In this embodiment, head cleaning liners 6a and 6b are provided on both sides of the head insertion hole 1.

The cleaning liner 6a on the upstream side in the traveling direction of the disk 4 (indicated by the arrow in FIG. 8) is filled with alcohol,
It is impregnated with a cleaning liquid containing water or the like.

Further, the cleaning liner 6b on the downstream side is not impregnated with cleaning liquid.

With this configuration, cleaning efficiency is improved by first moistening sticky dirt with the cleaning liner 5a and then wiping it off with the cleaning liner 6b. In addition, both liners 6a,
6b is replaceable.

〔Effect of the invention〕

As described above, according to the present invention, since the cleaning liner is made conductive, it is possible to eliminate dust adhesion and static electricity sparks due to charging of the disk cartridge.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a cleaning liner according to an embodiment of the present invention, Fig. 2 is a plan view showing the overall structure of a disk cartridge, and Fig. 3 is a view from the inside of the cartridge case to which the cleaning liner is attached. floor plan,
FIG. 4 is a perspective view of the disk cartridge, FIG. 5 is a vertical cross-sectional view of the main part of the disk cartridge inserted into the drive device, FIG. 6 is an enlarged vertical cross-sectional view of the cleaning liner attachment section, and FIG. FIG. 8 shows a modified example, FIG. 7 is a plan view of the main parts of the disk cartridge, and FIG.
The figure is a longitudinal cross-sectional view. 3... Cartridge case, 4... Disk, 6...
...Cleaning liner Fig. 2 Fig. 3 Fig. 5 Fig. 6 Fig. 4 Fig. 7

Claims (2)

[Claims] (1) In a disk cartridge comprising a cartridge case, a disk rotatably housed in the cartridge case, and a cleaning liner interposed between the disk and the cartridge case, the cleaning liner is conductive. What is claimed is: 1. A disk cartridge comprising: a cleaning liner configured to be electrically connected to a recording/reproducing device through the disk cartridge. (2) The electrically conductive path includes the cleaning liner;
The disk cartridge according to claim 1, wherein the disk cartridge is formed through a mounting member, a shutter, and a recording/reproducing device.