JPH0485784A - Optical recording medium cleaner - Google Patents

Abstract

PURPOSE:To obtain an optical recording medium cleaner where no static electricity is charged to an optical disk substrate despite the friction caused by the air even at application of an optical disk by applying an antistatic agent to the draw-out part for the optical recording medium. CONSTITUTION:An antistatic agent diluted by ethyl alcohol is supplied to the sponge 2 attached with a handle 1 used conventionally for the record disks. Then the light irradiating surface (not shown in a diagram) of an optical disk is wiped off through an antistatic agent stuck surface 3 of a hand cleaner 4. Thus even the minute dust, etc., can be cleared away. In the cleaner 4 the antistatic agent is supplied to a draw-out part for the optical recording medium consisting of a brush, the sponge, the feathers, etc., made of the natural or synthetic fibers or a porous substance by the impregnating of knealing process, etc. Thus the foreign matter like the dust, etc., never sticks on the substrates of a naked optical disk, an optical disk, an optical disk with a cartridge, and an optical disk under application for drive.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a cleaner for optical recording media.

More specifically, the present invention relates to a cleaner for optical recording media that has a wiping section that has antistatic properties.

[Prior art and problems to be solved by the invention] In the case of an optical recording medium made of a plastic substrate, for example, an optical disc, it is possible to
When recording, reproducing, and erasing is performed at m or 3600 rpm, the optical disk substrate generates, accumulates, and charges static electricity due to friction with the air, and dust and flakes are attracted to the surface of the optical disk substrate. This interferes with the laser beam of the drive helad that performs erasing, resulting in a signal error. Therefore, several proposals have been made to prevent dust and dirt from forming on the surface of the plastic substrate of an optical disk by antistatic treatment.

For example, patent application No. 1-1249 proposed by the present inventors
There are antistatic methods described in Japanese Patent No. 73 and Japanese Unexamined Patent Publication No. 63-160030, and techniques for preventing static electricity on plastics are well known.

However, in the case of optical discs, antistatic treatment causes optical distortion in the plastic substrate, increasing the signal error rate, deteriorating the signal characteristics (C/N ratio), and causing serious problems such as tracking and focusing. It has the disadvantage of disabling the servo, and is not yet a perfected technology.

Therefore, methods of wiping off dust and flakes adhering to optical disk substrates have been conventionally used.For example, as a method of wiping off optical disks contained in cartridges, Japanese Patent Laid-Open No. 62-31080 and Japanese Patent Laid-Open No. 62-208482 The method disclosed in each publication has been proposed, and the method disclosed in Japanese Patent Application Laid-Open No. 62-208482 has been proposed as a method for wiping an optical disc in a disc drive.

However, even with these methods, the optical disk must be wiped every time it is used, and the friction caused by wiping has the opposite effect of charging the plastic disk substrate with static electricity.

The present invention has been made in order to eliminate the above-mentioned problems.When wiping an optical disc, dirt, dust, etc. do not stick to and remain on wiping tools such as brushes, brushes, sponges, and feathers, so that they can be used repeatedly. An object of the present invention is to provide an optical recording medium cleaner that reduces the number of times an optical disk is wiped, and prevents static electricity from being charged on an optical disk substrate due to friction with air even when the optical disk is rotated at 360 rpm during use. It is.

[Means to solve the problem]

The present inventors have completed the present invention as a result of intensive research to solve the above problems.

That is, the present invention relates to an optical recording medium cleaner having an optical recording medium wiping section, characterized in that an antistatic agent is attached to the optical recording medium wiping section. be.

The optical recording medium cleaner of the present invention has at least an optical recording medium wiping section, and if necessary, a handle or the like may be attached to the wiping section. The wiping part of the cleaner of the present invention is a brush made of natural or synthetic fibers or porous material.
It is made of sponge, feathers, etc., and has an antistatic agent attached to it.

The antistatic agents used in the present invention include anionic fatty acid salts (potassium oleate, etc.), sulfonate salts (
sodium lauryl sulfate, sodium dodecylbenzenesulfonate, etc.), phosphates (alkyl phosphate jetanolamine, etc.); nonionic fatty acid polyhydric alcohol esters (sorbitan fatty acid ester, etc.), polyoxyethylene adducts (polyoxyethylene laurylamine, etc.); cationic alkylamine salts (stearylamine hydrochloride, etc.), quaternary ammonium salts (lauryltrimethylammonium chloride, etc.); amphoteric hetain salts (laurylbetaine, etc.), alanine salts, etc. These are diluted with ethyl alcohol or the like and impregnated into the wiping part, or they are applied to the wiping part by a method such as kneading.

In the present invention, the amount of the antistatic agent deposited is not particularly limited as long as it imparts antistatic properties to the optical recording medium, but when it is deposited on the surface of the wiping part, it is 5 to 500 ws/rr.
f, preferably 50 to 200 mg/rrf,
When it is included in the wiping part by kneading etc., it is 100 to 3000
■/Po, preferably 500 to 200/Po. Further, when an antistatic agent is contained in the cleaner liquid, the content is 0.1 to 5% by weight, preferably 0.5 to 2% by weight.
It is.

When using the cleaner of the present invention, remove dirt and dust from the light irradiation surface of the optical disc by holding the wiping part or handle in your hand, or place the cleaner of the present invention in a disc cartridge and use it automatically. Remove dirt and dust from optical discs, or set the cleaner of the present invention inside the disc drive to automatically remove dirt and dust from optical discs.
You can also remove dust.

[Examples] Examples of the present invention will be described below with reference to the drawings.

Figure 1 shows a conventionally used sponge 2 with a handle 1 for record discs impregnated with an antistatic agent diluted with ethyl alcohol. By wiping the light irradiation surface (not shown) of the optical disc with the inhibitor adhering surface 3, even minute dust can be removed. In experiments by the present inventors, even if an optical disc was used continuously for 24 hours at 180 degrees, recording, playback,
No erasure or deterioration of properties was observed, and no fine dust was observed under microscope observation. In addition, even if the ethanol contained in the sponge 2 dries and the sponge 2 dries,
The results were the same regardless of whether the wipe was wet with ethanol or wiped with ethanol.

FIG. 2 shows a brush 6 made of natural or synthetic fiber of a disc cartridge 5 disclosed in Japanese Patent Application Laid-Open No. 62-31080.
The antistatic agent is impregnated with an antistatic agent diluted with ethyl alcohol, and the ethyl alcohol is removed by vacuum drying at room temperature to form the antistatic agent adhesion surface 7. When this cartridge-containing optical disk was used 10,000 times at 1,800 rpm and the signal characteristics were checked, no deterioration in recording, reproducing, or erasing characteristics was observed.

FIG. 3 shows a feather 9 attached to a disk drive head 8 disclosed in Japanese Patent Application Laid-Open No. 62-208482, impregnated with an antistatic agent diluted with ethyl alcohol and dried in vacuum to form an antistatic agent-attached surface 10. It was formed.

Using this drive head, a magneto-optical disk 11 that has not been subjected to antistatic treatment and is not included in a cartridge is used continuously for 24 hours at 1800 rpm+m, recording, reproducing,
When checking the erasing characteristics, there was no change at all from the initial value. Even when inspected using a microscope, no dust was observed.

[Effects of the Invention] As is clear from the above description, the cleaner of the present invention has an antistatic agent in the wiping part made of a brush, brush, sponge, feather, etc. made of natural or synthetic fibers or porous material. Since it is attached by methods such as impregnation and kneading, it has the effect of preventing dust, flakes, and dust from adhering to the disk substrate, whether it is a bare optical disk, an optical disk in a cartridge, or an optical disk being used in a drive. be.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the cleaner of the present invention;
FIG. 2 is a sectional view showing another embodiment of the cleaner of the present invention, and FIG. 3 is a perspective view of still another embodiment of the cleaner of the present invention. 1: Handle 2: Sponge 3: Antistatic agent adhering surface 4: Hand cleaner 5: Disk cartridge 6: Brush made of natural or synthetic fiber 7 Antistatic agent adhering surface 8: Disk drive head 9: Feather 10: Antistatic agent Adhesion surface 11: magneto-optical disk

Claims (1)

[Scope of Claims] 1. An optical recording medium cleaner having an optical recording medium wiping section, characterized in that an antistatic agent is attached to the optical recording medium wiping section. 2. The optical recording medium cleaner according to claim 1, wherein the optical recording medium wiping part is made of a brush, a brush, a sponge, or a feather. 3. The cleaner for optical recording media according to claim 1, wherein the cleaner is used as a hand cleaner by holding it directly in the hand. 4. The optical recording medium cleaner according to claim 1, wherein the cleaner is used by being set in a disk cartridge. 5. The optical recording medium cleaner according to claim 1, wherein the cleaner is used by being set in a disk drive.