JPH01279479A - Disk cassette - Google Patents

Abstract

PURPOSE:To attain the cleaning of a disk sufficiently without adverse effect due to an adhesives by devising the area subject to the effect of a lifer and not subject thereto to a cleaning part. CONSTITUTION:A recording disk 9 receives a pressing force by a lifter of a disk cassette. An area L1 of a cleaning part 11 receiving the pressing force is constituted by an unwoven cloth not using any adhesives and an area L2 of the other part not subject to the pressing force is made of flocked member where fibers are implanted onto an adhesive layer. Through the constitution above, the disk cleaning is applied sufficiently without being subject to adverse effect of the adhesives.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of fII in Industry-L] The present invention relates to a disc cassette that cleans a recording disc in a cleaning section.

[Summary of the Invention] According to the present invention, a recording disc is housed in a case, a lifter is provided on the inner surface of the case, and a cleaning section is provided between the lifter and the case 11j other than the lifter, and the recording disc. In the disk cassette provided, the cleaning portion is made of a non-woven material in the area receiving the pressing force of the lifter and made of a non-woven material in other areas, so that the area receiving the pressing force of the lifter is made of adhesive. Because it does not use the cleaning action, the cleaning action is performed without being affected by the deafening effect, and the flocking material is sufficient in the area that is not affected by the pressing force of the lifter, and the leaning action is performed.
Therefore, there is no adverse effect due to the adhesive (and a sufficient leaning effect can be expected).

[Prior Art] In a conventional disk cassette, a recording disk is rotatably housed in a case, and a lifter is provided on the inner surface of the case. This lifter is made of an elastic member,
The first force is to press the disk for the second record against the inner surface of the opposing case. A cleaning member is provided between the lifter and other inner surfaces of the case and the recording disk.

This cleaning member has approximately the same shape as the recording I11 disc and is fixed to the case, and its material may be thermally bonded and made of non-woven material without using an adhesive, or the adhesive layer may include fibers. A material made of flocked material is used.

When the recording disk is rotated, the recording disk comes into contact with the cleaning section (4) and the dust that has adhered to the signal recording surface of the recording disk is taken into the cleaning member and the signal recording surface is cleaned. Particularly at the portion of the cleaning member located between the inner surface of the case and the recording disk where the lifter and the intermediate cover of the recording disk face each other, the cleaning effect is improved because the cleaning member comes into pressure contact with the recording disk.

[4] Problems to be Solved by the Invention] However, when a non-woven fabric is used as a cleaning member, due to the nature of the non-woven fabric, the dust-collecting properties of the non-woven fabric are poor in that the dust is taken into the cleaning member. In order to achieve a cleaning effect, in addition to the above-mentioned dust collection properties, the inside of the cleaning member must also have dust generation prevention properties that do not emit dust and prevent the collected dust from coming out again. It cannot be said that the dust prevention properties are excellent because the fibers are cut during the process and the cut fibers come out. Nowadays, as the capacity increases due to high-density recording, the cleaning effect of non-woven fabric materials is higher than that of non-woven fabric materials. Have difficulty.

In addition, we used flocked material as a cleaning material.
Although it has excellent dust collection and dust prevention properties, the fibers may fall down due to the pressure of the lifting lid at the location between the inner surface of the case and the recording disc, where the lid faces the lifter and the recording disc. Deafness occurs when the recording disc comes into contact with the adhesive layer. When a recording disk comes into contact with the adhesive layer, the signal recording surface undergoes a chemical change, resulting in deterioration of recording and reproducing characteristics.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a disk cassette which is free from inconveniences such as chemical changes, can accommodate increased capacity, and can provide leaning effects.

[Means for Solving the Problems] A disc cassette of the present invention for achieving the above-mentioned object rotatably stores a recording disc in a case, and a lifter is provided on the inner surface of the case, and the lifter allows the recording A cleaning section is provided between the lifter and the recording disk and between the case other than where the lifter is located and the Oji recording disk, and the cleaning section is pressed against the inner surface of the case. The region that receives the pressing force of the lifter is made of a non-woven fabric material that does not use an adhesive, and the other regions are made of a non-woven material with fibers planted in the adhesive layer.

[Function] When the recording disk rotates, its signal recording surface rotates while contacting the cleaning section, and dust adhering to the signal recording surface is taken into the cleaning section.

In the area that receives the pressing force of the lifter, the cleaning part of the non-woven material comes into pressure contact with the signal recording surface, but no adhesive is used, and in the area that does not receive the pressing force of the lifter, the cleaning part has an adhesive layer, but the cleaning part Since the adhesive layer does not come into pressure contact with the signal recording surface and the adhesive layer does not come into contact with the signal recording surface, there is no adverse effect due to chemical changes.

In addition, the cleaning part is made of a non-woven material in the area that receives the pressing force of the lifter, but because it comes into pressure contact with the signal recording surface,
In addition, in the area not subjected to the suppressing force of the lifter, the cleaning section is made of planting material that inherently has a good cleaning effect, so that there is a sufficient leaning effect.

Examples] Hereinafter, embodiments of the present invention will be explained with reference to the drawings.

Embodiments of the invention are shown in FIGS. 1-5.

The disk cassette consists of a recording disk 9 and a case A that rotatably accommodates the recording disk 9.

The recording disk 9 has a hub fixed to the center of a flexible rope J. A ring-shaped signal recording surface 9a is formed on both sides of the flexible panel board, and this signal recording surface 9a
A signal is recorded by the head.

The hub is made of a magnetic material and has a center hole and a drive bottle insertion hole, and is chucked by the chuck knob of the drive device.

The face case A has a substantially cedar-like shape, and the F case 1 and the upper case 2 have their peripheral end surfaces butted against each other.

FIG. 1 shows a view of the lower case 1 as seen from the inner surface, and FIG. 2 shows a view of the upper case 2 as seen from the inner surface. A center hole 3 is formed in the center of the lower case 1, and the hub of the recording disk 9 is exposed through the center hole 3. A circumferential rib 1 protrudes from the center of the upper case 2.
1 prevents the hub from moving in the lanoal direction. In addition, outer walls 5 dotted on the circumference are provided on the outermost sides of the lower case 1 and upper case 2, and the upper case 2
A circumferential inner wall 6 is provided on the inner circumferential side.

The upper case 2 has a disk surface rotation area Q between its outer wall 5 and inner wall 6, and the lower case 1 has a disk surface rotation area Q between its outer wall 5 and a position corresponding to the inner wall 6 of the upper case 2. It is configured. Head insertion holes 7 are located in opposing positions of the lower case 1 and upper case 2 within this disc rotation area Q.
is formed, and the head is inserted into the case A from this head insertion hole 7.
inserted within. Further, a beam 8 is attached within the disk surface rotation area a of the lower case I. This lifter 8
is made of an elastic metal plate, one end of which is connected to the lower case 1.
The free end presses the recording disk 9 via a cleaning section II, which will be described below. A protrusion IO extending in the circumferential direction is provided at a position of the upper case 2 facing the lifter 8, and the recording disk 9 pressed by the lifter 8 comes into pressure contact with the protrusion IO via the cleaning part II.

The cleaning section II has the same cedar-like groove shape as the disk surface rotation area e excluding the head insertion hole 7, and is attached to the lower case bolt and the upper case 2 with an adhesive 12 or the like. Lower case! The cleaning section Ill is arranged between the lifter 8 and the recording disk 9, between the inner surface of the lower case 1 other than the lifter i and the recording disk 9, and within the disk surface rotation area Q. The cleaning section 11 of the upper case 2 is arranged between the inner surface of the upper case 2 and the recording disk 9, and within the disk rotation area a. Further, both cleaning parts 11 are made of a non-woven fabric material that does not use adhesive in the area above and near the lifter 8 that receives the pressing force of the lifter 8, and
The area not subjected to the pressing force of the lifter 8 is made of flocked material.

FIG. 3 shows a cleaning section 11 made of a non-woven fabric material, and in this embodiment the non-woven fabric material is constructed by thermally bonding non-woven fabrics 13 in spots, but it may also be constructed without using an adhesive. Bye.

FIG. 4 shows the cleaning part 11 of the flocked material, the flocked material forms an adhesive layer 15 on the surface of the heath film 14,
It is constructed by planting fibers 16 on this adhesive layer 15 using, for example, a charging effect.

The operation of the above configuration will be explained below.

When the disk cassette is installed in the drive device and the recording disk 9 rotates, its signal recording surface 9a rotates while contacting the cleaning section 11.

In the area receiving the pressing force of the lifter 8, the cleaning part 11 made of a nonwoven fabric comes into pressure contact with the signal recording surface 9a, and a good leaning effect is obtained, and since no adhesive is used, there is no adverse effect due to this. In the area not subjected to the pressing force of the lifter 8, the cleaning part 11 of the flocked material comes into contact with the signal recording surface 9a, and a good leaning effect can be obtained. What does this cleaning section I+ do to the adhesive layer 15? Since the cleaning section II merely contacts the signal recording surface 9a, the adhesive layer 15 does not come into contact with the signal recording surface 9a. It will not adhere to the signal recording surface a and cause adverse effects due to chemical changes.

In addition, the cleaning part 11 made of non-woven material has poor dust generation resistance, and dirt and frayed fibers that have been taken in may come out. be taken into the cleaning section 11.

FIG. 5 shows an example of the actual flow of the flocking material in the cleaning section 11. In this actual flow example, an adhesive layer 15 is formed on the inner surface of the lower case 1 or the upper case 2, and this adhesive layer 15
It is constructed by directly implanting the vertebral column 16 into the vertebral column. This configuration provides the same functions and effects as those described in 6 above.

Further, compared to the embodiment described above, there is an advantage that there is no need to attach the notebook-shaped cleaning section 11 to the lower case 1 or the -1 case 2, and the base film 14 is also unnecessary.

In addition, in this embodiment, the region L1 receiving the pressing force of the beam lid 8
The boundary between the area and other areas may be defined at a point that always receives the pressing force of the lifter 8, even if only to a certain extent, or at a point that receives the pressing force of the lifter 8 at a certain level or more. In addition, the boundaries of the cleaning portions 11 of the lower case 1 and the second case 2 may be configured to be different from each other.

[Effect of the invention] As stated above, according to the present invention, case and record II
Do not install a cleaning section between the I disk and the area that receives the pressing force of the lifter! A4i wood is used, and in other areas, the plants are made of wood, so there is no deafening effect due to the rooting agent, and the effect is that it is sufficient for high capacity + 1J capacity and a leaning effect can be obtained.4- reactor.

[Brief explanation of the drawing]

Figures 1 to 5 show actual examples of the present invention. Figure 1 is a view of the lower case seen from the inside, Figure 2 is a view of the upper case seen from the inside, and Figure 3 is the same as that of Figure 1. FIG. 4 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 5 is a cross-sectional view of a cleaning part of a flocked material showing another example. A. Case, 8. Lifter, 9. Recording disc, 1
1. Cleaning part, 15. Adhesive layer, 16. Fiber,
Ll - Area that receives the pressing force of the lifter, L! ...An area that is not subjected to the pressing force of the lifter. + to the 1st concave B-B line wholesale flash Figure 4 Figure 4 Snake's A row color study and unfortunately the claw' Cree:) 7 hit f drunken mouth Figure 5

Claims (1)

[Claims] (1) Store the recording disc in the case so that it can rotate freely,
A lifter is provided on the inner surface of the case, and the lifter presses the recording disk against the opposing inner surface of the case, and between the lifter and the recording disk and between the case and the recording disk other than where the lifter is located. A cleaning section is provided between the lifter and the cleaning section, and the cleaning section is made of non-woven fabric material without adhesive in the area receiving the pressing force of the lifter, and made of flocked material with fibers planted in the adhesive layer in other areas. A disc cassette characterized by the following configurations.