JPH0612813A - Disk cartridge and disk cartridge driving device - Google Patents

Abstract

PURPOSE:To surely remove dusts every time the disk is inserted and ejected by bringing a cleaning member into sliding-contact with the disk cartridge along the transparent irradiating area of its lazer beam. CONSTITUTION:Dust eliminating sections 10A (10B) are provided on a transparent section 9 of which at least a part irradiated with a lazer beam, etc., is made transparent and a cleaning member 17 is slidably provided along these dust eliminating sections 10A (10B). Every time this disk cartridge is loaded to the cartridge driving device, the transparent dust eliminating sections 10 A (10B) of a cartridge 1 are cleaned with the cleaning member 17. Thus, by completely eliminating dusts from the transparent section 9, a signal is correctly recorded and reproduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc cartridge and a disc cartridge driving device in which a recordable and reproducible optical disc is rotatably accommodated.

[0002]

2. Description of the Related Art A disk cartridge for magneto-optical recording / reproduction in which an optical disk is rotatably mounted in a disk cartridge case and a disk cartridge driving device have been well known.

In such a disk cartridge, a recording / reproducing carrier rotatably pivotably mounted in the cartridge is irradiated with a laser beam or the like from the lower side of the cartridge for recording / reproducing. Is provided,
The window portion is provided with a shutter member for preventing dust from entering when not in use. However, in order to solve the problem that dust enters while the shutter is opened during recording and reproduction, for example, as shown in JP-A-2-33783, a part of the case of the disk cartridge is made transparent so that recording is completed. In some cases, the reproduction carrier is sealed in the cartridge case. An example of the configuration is shown in FIG.

In FIG. 9, reference numeral 7 denotes a disk cartridge as a whole, and 1 is an optical disk carrier composed of, for example, a flexible disk having a recording and reproducing surface on its surface, 2 is a carrier for accommodating the carrier 1, and the carrier is driven together with the carrier 1. A disc cartridge case that is attached to and detached from the loading section of the device,
3 is a recording disposed outside the disc cartridge 7,
The reproducing optical head device 4 is a spindle motor for rotating the carrier 1 and is transparent to the area where the recording / reproducing area of the disk cartridge case 2 is irradiated with laser light from the reproducing head device 3 side. Alternatively, the transparent portion 6 that is almost transparent is provided.

The transparent portion 6 is formed by bonding glass or the like to an ordinary window portion through an adhesive or the like so as to form a part of the case 2, or the entire case is made of a transparent member such as polycarbonate. Hard coating is applied so that the case surface is not scratched.

Further, in addition to the transparent portion 6 provided on the surface of the case 2 facing the optical head 3, a transparent portion 9 is provided on the opposite side of the optical head 3, and light detection is performed outside the transparent portion 9. A disk cartridge in which the container 8 is arranged has also been proposed.

[0007]

According to the above-mentioned conventional structure, since the disc cartridge is held by hand, fingerprints and dust are likely to adhere to the disc cartridge case 2 due to the fingerprints and dust attached to the transparent portion 6 or 9. There was a problem that accurate recording and playback could not be performed.

The present invention has been made in order to solve the above problems, and its purpose is to clean fingerprints and dust on the transparent portion every time it is mounted on the disk cartridge driving device during recording and reproducing. A disk cartridge and a disk cartridge driving device which can be used are obtained.

[0009]

DISCLOSURE OF THE INVENTION As shown in FIG. 1, an example of the disk cartridge of the present invention is a disk in which a recordable and reproducible optical disk carrier has a transparent portion at least at a laser beam irradiation position. In a disk cartridge 1 pivotally mounted in a cartridge case, the transparent parts 6 and 9 have dust removing parts 10A and 10B, and a cleaning member 17 is provided along the dust removing parts 10A and 10B. Sliding is performed to remove dust on the transparent portions 6 and 9.

An example of the disk cartridge driving device of the present invention is shown in FIG. 8, in which a recordable and reproducible optical disk carrier is rotatably mounted in a disk cartridge case having a transparent portion at a laser beam irradiation position. In the disk cartridge drive device 18 in which the pivotally mounted disk cartridge 1 is mounted in the loading mechanism 15 to record and reproduce the optical disk carrier, the loading mechanism 15 removes dust 12 on the transparent portions 6 and 9. The cleaning member 17 is provided.

[0011]

According to the disk cartridge driving device of the present invention, the transparent dust removing portion of the disk cartridge is cleaned by the cleaning member every time when the disk cartridge is loaded into the disk cartridge driving device, so that accurate signal recording and reproduction are performed. Not only is it possible to obtain a disk cartridge in which dust can be completely removed from the transparent portion.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a disk cartridge and a disk cartridge driving device of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows an assembled state of the disc cartridge of this example. As shown in FIGS. 2 and 3, the disc cartridge 1 has a pair of upper and lower halves 11A and 11B facing each other and projected. Top and bottom half 1 by matching
The optical disc carrier is rotatably held in 1A and 11B.

Although not shown, a flexible disk, an optical disk, or the like is selected as the optical disk carrier.

In FIG. 2, the upper half 11A is made of synthetic resin which is a thin plate having a substantially square shape. This synthetic resin may be made of a transparent or nearly transparent material such as polycarbonate integrally formed into a substantially plate shape. However, in the example of FIG. A dust removing portion 10A which is formed of a transparent portion 9 by a two-color molding method or the like and is formed of a thin recessed portion for improving light transmittance.
To configure. The dust removing portion 10A is formed in a substantially rectangular shape, and the length L in the longitudinal direction thereof is selected to be longer than the length across the entire recording / reproducing track area of the optical disc carrier. The dimension of the short side W is selected as the length of the cleaning member described later.

Left and right side edge step portions 20 of the dust removing portion 10A
The front edge step portion 20F as well as L and 20R is formed as a tapered surface 21 as shown in FIG. 5A.

FIG. 5A is a view taken along the line AA 'in FIG. 2 as seen from the direction of the arrows. The left and right side edge step portions 20L and 20R forming the dust removing portion 10A of the transparent portion 9 form a tapered surface 21. is doing. Of course, although not shown, the front edge step portion 20F also has a tapered surface 21. In addition, in FIG. 2, 22 is a label sticking surface, and although not shown, the lower half 11B
A circular groove that fits with the protruding rib is formed on the back side (inside) of the upper half 11A in a substantially central portion.

FIG. 3 shows the lower half 11B from the inside. Like the upper half, the transparent portion 6 which is two-color molded into a substantially square thin plate has the dust removing portion 10B formed on the outer side of the lower half. The left side edge step portions 23L and 23R as well as the front side edge step portion 23F are formed as the tapered surface 21 as in FIG. 5A.

A central hole 24 through which a hub rotated by a spindle motor penetrates is formed at a substantially central position of the lower half 11B, and a concentric rib 25 surrounding the central hole 24 is formed.
The protrusion height h corresponds to the thickness of the optical disc carrier, and the optical disc carrier is pivotally mounted in the disc cartridge so as to be rotatable when the upper and lower halves 11A and 11B are coupled to each other. Reference numeral 26 denotes a hole into which a fusion pin (not shown) provided on the upper half 11A side is inserted.

The upper and lower halves 11A and 11B as described above are combined to form the disc cartridge 1, which is constituted by a brush or felt as shown in FIG. 1, and the disc cartridge 1 is mounted along the fixed cleaning member 17. When slid, the fingerprints or dust 12 attached or placed on the dust removing portions 10A and 10B are tapered 21 as shown in FIG.
Along the upper and lower halves 11A and 11B, the left and right front edge steps 20L, 23L,
Compared to the case where the taper surface 21 is not attached to the 20R, 23R, 20F, and 23F to form a right angle, the dust can be easily scraped out.

The above-mentioned cleaning member 17 constitutes the loading mechanism 15 as shown in FIGS. It is attached to the inside of the front portion of the loading chassis 16 having a substantially U-shaped cross section.

The cleaning member 17 is made of, for example, a felt material and has a substantially rectangular shape. The long sides of the rectangular cleaning member 17 are the upper and lower halves 1 of the disc cartridge 1.
Dust removal parts 10A and 10 formed on 1A and 11B
It is selected to be equal to or shorter than the rectangular short side W of B, and is attached to the inside of the chassis 16 of the loading mechanism 15 with an adhesive or the like.

The cleaning member 17 is attached to, for example, a leaf spring, and is held by holding members 17A and 17B which hold both ends of the leaf spring so that the side surfaces of the leaf spring have a mountain shape, and the cleaning member 17 is drilled on the front surface of the chassis 16. The cleaning member 17 may be opposed to the dust removing portions 10A and 10B of the disk cartridge 1 through the through holes, and the dust removing portions 10A and 10B may be slidably contacted to remove the dust.

FIG. 8 shows such a disk cartridge drive device 18. A spindle motor, an optical head, etc. of the disk cartridge drive device are mounted on the base 30, and the loading mechanism 15 is also mounted on the base 30. It is held in a predetermined way.

The panel 13 is provided with a disc cartridge insertion opening 14 for loading, recording, and reproducing the disc cartridge 1, and ejecting the recorded and reproduced disc cartridge 1. The left and right ends of the disc cartridge insertion opening 14 are provided. Is regulated by the left and right dimensions of the disk cartridge 1, and therefore the dust removing portions 10A and 10B are always at a fixed position. Therefore, the cleaning member 17 is arranged at the upper and lower positions of the chassis 16 facing the dust removing portions 10A and 10B. Will be installed.

In FIG. 8, every time the disc cartridge 1 is inserted into and ejected from the loading mechanism 15 of the disc cartridge driving device 18, fingerprints or dust on the transparent portions 6 and 9 are cleaned by the cleaning member 17 and scraped off. .

In the above embodiment, the dust removing units 10A and 10
Although B has a concave shape, it can also have a convex shape as shown in FIG. 5B if the transparency is sufficient. In this case, the cleaning member 17 has the same taper surface 2 as the dust removing portion 10A 'of the transparent portion 9.
The lengths of 0L 'and 20R' are all selected so as to cover them.
Further, it is obvious that the cleaning member 17 may be moved on the dust removing portions 10A and 10B without fixing the cleaning member 17 to the chassis 16 to scrape out the dust 12. In this case, the cleaning member 17 can be moved from the center direction of the disc cartridge to the outer peripheral direction.

Since the present invention is constructed as described above, the dust on the transparent portion adhering to the light beam applied to the optical disc can be surely removed, and the disc cartridge capable of accurate signal recording and reproduction. Also, a disk cartridge drive device can be obtained.

[0029]

According to the disc cartridge and the disc cartridge driving device of the present invention, it is possible to obtain a disc cartridge which can surely remove dust every time the disc cartridge is inserted into and ejected from the recording / reproducing apparatus.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a disc cartridge of the present invention.

FIG. 2 is a perspective view of the upper half of the disc cartridge of the present invention.

FIG. 3 is a perspective view of the lower half of the disc cartridge of the present invention.

FIG. 4 is a diagram for explaining a dust removal state of the disc cartridge of the present invention.

5 is a disc cartridge of the present invention, FIG.
It is a cross-sectional arrow view along A '.

FIG. 6 is a perspective view showing a mounting state of the cleaning member on the loading mechanism chassis used in the disc cartridge driving device of the present invention.

FIG. 7 is a front view of the loading mechanism chassis shown in FIG.

FIG. 8 is an overall configuration diagram showing a state in which the disc cartridge of the present invention is loaded into the disc cartridge device.

FIG. 9 is a schematic side sectional view of a conventional disc cartridge.

[Explanation of symbols]

 1 Disc Cartridge 6,9 Transparent Part 10A, 10B Dust Exclusion Part 11A Upper Half 11B Lower Half 12 Dust 17 Cleaning Member 18 Disc Cartridge Drive Device 21 Tapered Surface

Claims (4)

[Claims] 1. A disc cartridge comprising a recordable and reproducible optical disc carrier rotatably pivotably mounted in a disc cartridge case whose laser beam irradiation position is at least a transparent portion. A disk cartridge having a dust removing portion, wherein a cleaning member is slid along the dust removing portion to remove dust in the transparent portion. 2. A disc cartridge in which a recordable and reproducible optical disc carrier is rotatably pivoted in a disc cartridge case in which a laser beam irradiation position is a transparent portion is mounted in a loading mechanism, A disk cartridge driving device for recording and reproducing the optical disk carrier, wherein the loading mechanism is provided with a cleaning member for removing dust on the transparent portion. 3. The disk cartridge according to claim 1, wherein the transparent portion of the disk cartridge case is arranged in a direction crossing a recording / reproducing area of the optical disk carrier. 4. The disk cartridge according to claim 1, wherein a chamfer is provided at an edge portion of the dust removing portion of the transparent portion of the disk cartridge.