JPH0433598Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application This invention relates to a cartridge for an optical disk, and more specifically to a cartridge that prevents dust from entering the cartridge when the optical disk is not in use or stored.

(b) Conventional technology Information accumulated on the surface of an optical disk due to unevenness, magnetism, etc. is extracted as an image or sound using light, but since the medium to be extracted is light, erroneous signals may be generated due to dust etc. attached to the disk surface. This resulted in false information and was a major hindrance to the spread of optical discs. Conventional methods to prevent this dust include wiping it by hand using a special cloth or deerskin, or by planting hair on the inside of the cartridge.
There are methods such as wiping the disk surface with the tip or providing a dust storage part in the cartridge.
(Refer to Japanese Unexamined Patent Publications No. 60-129983, No. 40073-40073, and No. 40072-40072) (c) Problems to be solved by the invention In these conventional techniques, There have been problems in that scratches can cause errors in signals, and even if dust is attempted to be collected within the cartridge, it cannot be completely collected and, after floating inside the cartridge, it adheres to the disk surface again.

This invention attempts to solve these problems by preventing dust from entering the cartridge.

(d) Means and operation for solving the problems In order to solve the above problems, this invention uses a plate-like case, stores an optical disk inside the case, and reads information on at least one of the top and bottom surfaces of the case. In a cartridge for an optical disk, which has an opening for opening and is configured such that the opening can be opened and closed by a sliding outer door, the outer peripheral surface of the opening and/or the outside when the outer door is closed is A cloth that closes the gap between the back surface of the outer door and the front outer circumferential surface of the opening when the outer door is closed is attached to the back surface of the door at a position opposite to the front outer circumferential surface of the opening.

This can prevent dust from entering through the gap between the sliding outer door and the outer peripheral surface of the cartridge case including the information reading opening when the disk is not in use.

(E) Embodiments This invention will be explained below based on the illustrated embodiments. However, this invention is not limited by this.

Figure 1 is an explanatory diagram showing an example in which cloth is pasted only on the plate-like case side of the cartridge, excluding the outer door. Figure 2 is an explanatory diagram when the sliding outer door is closed. The figure is a perspective explanatory view when the sliding outer door is opened, and FIG. 4 is an explanatory cross-sectional view taken along the line I-'.

In the figure, an optical disk 1 is housed in a plate-like case 2 of a cartridge, and an opening 2a for an optical disk drive and information reading is provided on the top surface of the plate-like case 2 of the cartridge.

A sliding outer door 3 is attached to the plate-like case 2 of the cartridge, and the outer door 3 has a door opening 3a of the same size as the opening 2a described above, so that the outer door 3 can be opened. When the door opening 3a and the opening 2a of the plate-like case of the cartridge match (Fig. 3), when the cartridge is closed, the opening 2a is closed by the outer door 3 (Fig. 2). There is.

A cloth 4 is attached in the shape of a rectangular frame to the front outer peripheral surface of the opening 2a of the plate-like case 2 of the cartridge. In FIG. 1, it is attached in the shape of a rectangular frame that is slightly larger than the size of the opening 2a, but it may also be attached along the edge of the opening 2a.

As for the material of the cloth, one having short, fine fibers on the surface (for example, rashia type) is preferable, but any material that is relatively soft and can fit on the inner surface of the outer door 3 is sufficient.

The cloth may be pasted only on the plate-like case 2 side of the cartridge, but when the opening 2a is closed with the outer door 3, the cloth 5 may be pasted on the inner surface of the outer door 3 at a position opposite to the cloth 4. Alternatively, it may be attached to both the plate-like case side and the outer door side of the cartridge.

Since the cartridge is constructed as described above, by closing the outer door when the optical disk is not in use or in storage, the space between the outer door and the plate-like case of the cartridge is sealed with a cloth or with a cloth. The fibers have the effect of acting as a filter and preventing dust from entering into the plate-like case of the cartridge from the outside. Of course, this can prevent the generation of false signals and false information.

(f) Effects of the invention According to this invention, with a simple configuration, it is possible to prevent dust from entering the plate-like case of the cartridge, and to prevent false signals and information from being taken out from the optical disk.

[Brief explanation of the drawing]

Fig. 1 is an explanatory plan view showing an embodiment of this invention with the outer door removed, Fig. 2 is an explanatory plan view of the outer door attached with the door closed, and Fig. 3 is an explanatory plan view of the outer door. FIG. 4 is an explanatory perspective view showing the opened state, and FIG. 4 is an explanatory cross-sectional view taken along line I-I'. 1... Optical disk, 2... Cartridge plate case, 3... Outer door, 4, 5... Cloth.

Claims (1)

[Scope of utility model registration request] A plate-shaped case for storing an optical disk inside the case, having an opening for reading information on at least one of the top and bottom surfaces of the case, and configured so that the opening can be opened and closed with a sliding outer door. In the cartridge, on the front outer circumferential surface of the opening and/or at a position opposite to the front outer circumferential surface of the opening on the back side of the outer door when the outer door is closed,
It is characterized by pasting a cloth that closes the gap between the back side of the outer door and the front outer peripheral surface of the opening when the outer door is closed. Cartridge for optical disks.