JP2001143292A - Cleaning disk - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a case where a brush is nurted while the information recorded on a cleaning disk is read and also the brush falls or wears when the disk is rotated at a high speed. SOLUTION: This cleaning disk 1 includes a brush 3 which is attached to a disk main body 2 to clean a pickup lens P of an optical information recorder- reproducer. The body 2 includes a catalog information recording part 2a and an image information recording part 2b, and the brush 3 consists of an aggregate of single fibers of 1-1.2 deniers and is located at a position distant from the area end of the part 2a by L1 (>=5 mm) and also distant from the area end of the part 2b by L2 (>=5 mm) respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a cleaning disk for cleaning a pickup lens (hereinafter simply referred to as a lens) of an optical information recording / reproducing apparatus (hereinafter simply referred to as an apparatus).

[0002]

2. Description of the Related Art A first example of a conventional cleaning disk of this type is disclosed in Japanese Patent Application Laid-Open No. 8-235628. The cleaning disk of the first example is a list of disks, that is, a TOC (Table of Control).
ents) The brush is arranged at a position separated from the end of the area of the inventory information recording section in which the information is recorded by the protrusion of the brush. Thus, even if the brush falls down to the catalog information recording unit side, the brush does not enter the catalog information recording unit, so that the catalog information does not become unreadable.

A second conventional example is disclosed in Japanese Utility Model Registration No. 2546574. The cleaning disk of the second example is obtained by implanting a silk thread brush having a predetermined shape. With this brush, no load is applied to the lens, so that it is possible to prevent the rotation of the disk from being hindered.

[0004]

However, in the above-mentioned conventional cleaning disk, in the first example, when the lens is reading the inventory information, the brush is used to clean the lens unit, that is, the lens and each component around the lens unit. It is often on something covered with a lens cover. For this reason, when reading the catalog information, there is a problem that the brush may come into contact with the lens cover or the like of the lens unit and damage the brush.

In the second example, there is no problem at the time of cleaning at a rotational speed at the time of reading information of a music CD on which audio data is recorded, but when the cleaning disk is rotated at a high speed, the brush falls. And there is a problem that it may be worn. Here, in a recent cleaning disk, image data is recorded together with code data, and for example, when cleaning a lens of a data reading (recording) device such as a CD-ROM or a CD-R which is a peripheral device of a computer, The mainstream is to read image data of a cleaning disk and display an image of a cleaning menu or the like on a CRT or the like, or display an image of a start or end message of cleaning or the like.

However, in the above-described apparatus which is a peripheral device of a computer, it is required that image data is read at a higher speed and an image is promptly displayed on a CRT or the like of the computer. For this reason, in this type of device,
For example, data is read by rotating a disk at a high speed several times to several tens times the rotational speed of a music CD. In addition, the brush cannot withstand such high-speed rotation of the disk, and the brush may fall or be worn.

Here, it is also possible to record only audio data on the cleaning disk, output a cleaning message or the like by voice, and not display an image. However, some of the peripheral devices of the computer do not have a speaker. In this case, it is inconvenient to listen to a message indicating the start or end of cleaning using headphones or the like.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to prevent the brush from being damaged when reading the information recorded on the cleaning disk, and to prevent the brush from falling down and abrasion even when the disk is rotated at a high speed. is there.

[0009]

According to a first aspect of the present invention, there is provided a cleaning disk provided with a brush for cleaning a pickup lens of an optical information recording / reproducing apparatus on a disk body. The disc body includes a catalog information recording unit and an image information recording unit, and the brush is formed of an aggregate of single fibers of 1 to 2.5 denier, and an area of the catalog information recording unit of the disc body. It is characterized by being provided at a position at least 5 mm from the end and at least 5 mm from the end of the area of the image information recording section.

According to a second aspect of the present invention, in the cleaning disk according to the first aspect, the brush has a total thickness of 100 to 150 denier, and passes through a through hole formed in the disk main body. Each single fiber is provided so as to be swingable independently in the through hole.

[0011]

According to the first aspect of the present invention, a brush made of an aggregate of single fibers of 1 to 2.5 deniers has no stiffness and is soft. Excellent wear resistance. In addition, since the brush is at least 5 mm away from the end of the area of the inventory information recording unit and at least 5 mm from the end of the area of the image information recording unit, the brush is used when reading the inventory information recording unit or the image information recording unit. Therefore, the lens cover of the lens unit does not contact the brush. Thereby, the brush is not damaged even if the disk body rotates at a high speed, so that it is possible to prevent the brush from falling down or being worn.

According to the second aspect of the present invention, the brush is a group of single fibers having a total thickness of 100 to 150 deniers, and each single fiber is swingable in the through hole. At this time, since each single fiber swings to reduce the impact, it is possible to eliminate the occurrence of an error in the device. In addition, since each single fiber is dispersed on the lens, cleaning is performed favorably. Further, since each single fiber of the brush can swing independently in the through hole, stress concentration on each single fiber can be eliminated, and the brush can be prevented from falling down.

[0013]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing an embodiment of a cleaning disk and a lens unit of the apparatus according to the present invention. FIG. 2 is a perspective view showing a main part of the lens unit. In FIG. 1, a cleaning disk 1 has a brush 3 implanted at a predetermined position of a disk main body 2. The brush 3 is on the lens P side of the apparatus (the lower surface side in the figure in the present embodiment) and
It is provided at a position where it can face.

On the other hand, the disc body 2 has a list (TOC) which can be read by the apparatus toward the outer peripheral side.
And a skip area (data recording section) 2c, and an image information recording section 2b that records image information. Catalog information recording unit 2a
Is provided in a predetermined range on the inner peripheral side of the disk main body 2. Further, the image information recording section 2b is provided in a predetermined range on the outer peripheral side of the disk main body 2. Furthermore, the skip area 2c between the catalog information recording section 2a and the image information recording section 2b is an area that is skipped on the cleaning disk 1, but some data may be recorded. The brush 3 is provided in the skip area 2c and is located at a position L1 away from the outer peripheral end of the catalog information recording unit 2a and at a position L2 away from the inner peripheral end of the image information recording unit 2b. Is provided. In this embodiment, L1 and L2 are each set to 5 mm or more.

The brush 3 is composed of a single fiber group in which single fibers made of polyester resin, nylon resin or the like are aggregated. Further, each single fiber has a denier of 1 to 2.5. Since the fibers having such a thickness are flexible and have no stiffness, the brush hardly falls down or wears even after long-term use. This is presumably because the fibers have flexibility, and the contact force with the lens P is weak. The brush 3 as a whole is about 100 to 150 denier.

Here, the reason why the brush 3 is made as described above will be described. In connection with the present invention, experiments were conducted by changing the shape of the brush 3 in various ways. First, an experiment was conducted to examine the relationship between the cleaning effect when the length of the brush 3 and the thickness of the single fiber constituting the brush 3 was changed and the occurrence of an error on the device side.

In this experiment, the thickness of the single fiber was 0.5,
The lens P was cleaned using 1, 2.5 and 5 denier. As a result, it was found that the thickness of the single fiber constituting the brush 3 was preferably 1 denier or 2.5 denier. In the case of 0.5 denier, since the stiffness is too weak, if the length of the brush 3 is increased, the spread of the brush 3 becomes large and an error easily occurs. On the other hand, in the case of 5-denier, an error is likely to occur because the elasticity is too strong.

On the other hand, when the brush 3 was composed of a single fiber of 1 denier or 2.5 denier, the cleaning could be sufficiently performed. Further, it was found that the length of the brush 3 is preferably about 2 to 2.5 mm. If the length of the brush 3 is short, the brush 3 will not reach the lens P sufficiently and cleaning will be insufficient. On the other hand, if the length is too long, the contact with the lens P becomes strong, which may cause a fall or an error of the apparatus.

Subsequently, an experiment was conducted to examine the relationship between the thickness of the single fiber of the brush 3 and the occurrence of falling. The thickness of the entire brush 3 was 150 denier, and the length of the brush 3 was 2 mm.
The cleaning disk 1 was allowed to stand for one day with the surface on which the brush 3 was provided as the lower surface, the fall of the brush 3 was observed, and the lens P was mounted on the apparatus and the lens P was cleaned to determine whether an error occurred. Further, the cleaning was continuously performed, and the falling of the brush 3 was observed every 50 times.

As a result, the one in which the single fibers of 1 to 2.5 denier were aggregated did not fall down after leaving the brush for one day, and no error occurred during the subsequent cleaning.
It was found that the lens P could be cleaned satisfactorily and that the repetition durability was excellent. In contrast,
The aggregate of the 0.5 denier single fibers fell because the stiffness was too weak.

It has been found that the thickness of the entire brush 3 only needs to be 100 denier or more, and there is no problem if the thickness is up to about 1000 denier. However, since it was found that there is no difference in the effect at 100 denier or more, it is not necessary to increase the thickness more than necessary, and it is preferably in the range of 100 to 150 denier. From the above results, the single fibers of 1 to 2.5 denier were aggregated to form a total of 100 to 150
A denier brush 3 was used.

In the skip area 2c of the disk body 2,
About 0.3 to 1.0 mm, preferably 0.4 mm to 0.1 mm.
A through-hole 2d having a diameter of about 6 mm is formed, and the brush 3 passes through the through-hole 2d on the opposite surface (FIG. 1).
(Medium, upper surface), is bent so as to fall on this surface, and is fixed with an adhesive tape or the like. Further, the brush 3 is not completely inserted into the through hole 2d, but is configured such that the diameter of the through hole 2d is larger than the entire thickness of the brush 3, and each single fiber of the brush 3 Are provided so as to be swingable independently in the through hole 2d.

The brush 3 is provided at a height of about 2 mm from the surface of the disk body 2.
If it is about 2 mm, it reaches the lens P sufficiently and can be reliably cleaned. Further, when the brush 3 is swingably mounted in the through hole 2d as described above, the length of the brush 3 is increased by the thickness of the disk main body 2 (about 1.2 mm) (substantially 3.2 mm). . The longer the length of the brush 3 is, the lower the swinging power of the tip of the brush 3 is, so that the stiffness of the entire brush 3 can be reduced.

When the above-described cleaning disk 1 is mounted on the apparatus, first, the lens P of the lens unit 10 reads information from the inventory information recording section 2a. Lens unit 1
Reference numeral 0 denotes a lens cover C that opens the lens P and covers the components around the lens P. The height of the lens cover C is substantially equal to the height of the lens P.

The lens unit 10 reads information while moving in the radial direction of the cleaning disk 1. Then, even when the lens P reaches the outer peripheral end of the inventory information recording unit 2a, the lens unit 10 does not contact the brush 3.
This is because the entire width L3 (length in the moving direction) of the lens unit 10 is about 10 mm, although there is some variation depending on the device, and therefore, as described above, the width L3 from the outer peripheral end of the inventory information recording unit 2a is L1 This is because the brush 3 is provided at a position (5 mm or more) apart. In addition, brush 3
Considering the variation in the length of the lens cover C, the variation in the shape of the lens cover C, and the like, it is preferable that the brush 3 and the outer peripheral end of the inventory information recording unit 2a be separated by 7 mm or more.

Since a command for reading the image information recording unit 2b is described in the catalog information recording unit 2a, the lens unit 10 reads the catalog information recording unit 2a and then reads the image information recording unit 2b. Move to 2b side. At this time, the brush 3 comes into contact with the lens P, and the first cleaning is performed.

Then, the information in the image information recording section 2b is read, and a predetermined image, for example, a cleaning menu is output to the CRT based on the information recorded therein. Here, as described above, if the brush 3 is provided at a position L2 (5 mm or more) away from the inner peripheral end of the image information recording unit 2b, the brush 3 can be used as a lens when reading information from the image information recording unit 2b. Does not contact the unit 10. In consideration of variations in the length of the brush 3 and variations in the shape of the lens cover C, it is preferable that the brush 3 and the inner peripheral end of the image information recording unit 2b be separated by 7 mm or more.

As described above, when reading the information in the catalog information recording unit 2a and the image information recording unit 2b, the brush 3
Does not contact the lens unit 10. Thus, even if image information is recorded on the cleaning disk 1 and the image information is read at a high speed, the brush 3 can be prevented from falling down or abraded, resulting in excellent durability.

When the cleaning menu is selected by the user, the lens P moves to a position directly below the brush 3, and the surface of the lens P is cleaned by the brush 3. In accordance with this operation, an image indicating that cleaning is being performed and an image indicating that cleaning has been completed are output to the CRT.

During cleaning, each single fiber of the brush 3 can freely swing when the brush 3 comes into contact with the lens P, so that the impact at the time of contact can be reduced. Further, since the individual fibers of the brush 3 are dispersed on the lens P, the lens P can be efficiently cleaned. Furthermore, since each single fiber can swing independently, stress concentration hardly occurs even by repeated use or the like, and it is possible to prevent plastic deformation of each single fiber and prevent the brush 3 from falling down.

After the cleaning disk 1 is mounted on the apparatus, an image indicating that cleaning is being performed may be displayed immediately without recording information for displaying a menu or the like as an image. Further, in the present embodiment, the catalog information recording unit 2a is provided on the inner peripheral side of the disk main body 2, and the image information recording unit 2b is provided on the outer peripheral side of the disk main body 2, but the present invention is not limited to this. Then, the brush 3 may be provided at a position at least 5 mm away from the end of the area of the inventory information recording unit 2a and the image information recording unit 2b.

[0032]

According to the first aspect of the present invention, the brush can be prevented from falling down even by repeated use, and the abrasion resistance of the brush can be improved. Further, it is possible to prevent the brush from coming into contact with the lens unit when reading information from the catalog information recording unit or the image information recording unit, so that the brush is not damaged even when the cleaning disc is rotated at a high speed. Therefore, it is possible to prevent the brush from falling down or abrasion.

According to the second aspect of the present invention, when the brush hits the lens, each single fiber oscillates to reduce the impact, so that errors in the apparatus can be eliminated.
Furthermore, since each single fiber is dispersed on the lens, cleaning is performed favorably. Furthermore, since each single fiber of the brush can swing independently in the through hole, stress concentration on each single fiber can be eliminated, and the brush can be prevented from falling down.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a cleaning disk and a lens unit of the apparatus according to the present invention.

FIG. 2 is a perspective view showing a main part of the lens unit.

[Description of Signs] 1 Cleaning disc 2 Disc main body 2a Catalog information recording section 2b Image information recording section 2c Skip area (data recording section) 2d Through hole 3 Brush P (pickup) lens C Lens cover 10 Lens unit

Claims (2)

[Claims] 1. A cleaning disk provided with a brush for cleaning a pickup lens of an optical information recording / reproducing apparatus on a disk main body, wherein the disk main body includes an inventory information recording section and an image information recording section; A 1 to 2.5 denier single fiber aggregate, and at least 5 mm away from the end of the area of the inventory information recording section of the disk body,
And a cleaning disk provided at a position at least 5 mm away from an end of the area of the image information recording section. 2. The cleaning disk according to claim 1, wherein the brush has a total thickness of 100 to 150 denier, and each of the single fibers passes through a through hole formed in the disk main body. A cleaning disk, wherein the cleaning disk is provided so as to be swingable independently in the through hole.