JPS61289590A - Recording medium storing body - Google Patents

Abstract

PURPOSE:To discriminate the type of the recording medium stored in a case by providing a reflecting plate having the reflecting ratio corresponding to the type of the recording medium at the reflecting plate arranging part. CONSTITUTION:For a jacket case 2 before it is inserted into the device, so that the dust, etc., may not invade from the external part into the case 2, a center hole 3 and a head inserting hole 4 are completely closed by a shutter 7. When the C side of the case 2 is held and inserted into the device in the D direction, the shutter 7 is shifted in the A direction by the shutter opening closing mechanism. Simultaneously, when a reflecting plate arranging part 9 of the case 2 comes to the position of a reflecting type photo microsensor 10 provided at the device, a reflecting light 14 equivalent to the reflecting ratio of a reflecting plate 15 provided at the reflecting plate arranging part 9 is generated, and the reflecting light is detected by a photodetecting element 12. Thus, since for the detecting means, one reflecting type light detecting device is sufficient, by the simple constitution, the type of several types of the recording media can be discriminated.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to tape cassettes and disks used in recording and reproducing devices for recording, for example, audio information, video information, document information, etc., or for reproducing recorded information. This invention relates to storage bodies for recording media such as jackets.

Conventional technology Tape cassettes and disk jackets containing magnetic tapes, magnetic disks, or optical disks have different optimal recording conditions and playback conditions depending on the type of recording medium. A type discrimination mechanism is provided.

For example, in tape cassettes, normal tape,
Several types of tapes with different recording media have been proposed, such as GrO2 tape, metal tape, and Fθ-Or tape, and tape cassettes containing each of the above-mentioned tapes are now commercially available.

The problem that the invention seeks to solve However, in the case of the above cassette tape.

Since detection holes for detecting the type of recording medium are formed at different positions depending on the type of recording medium, it is necessary to install individual tape cassettes according to the type of recording medium. Sharing was difficult.

Furthermore, in the main body of the recording and reproducing apparatus, at least as many detection means are required as there are types of recording media, which not only inevitably increases the cost, but also increases the number of detection means as the number of types of recording media increases. There were drawbacks such as a high ratio and a complicated configuration.

SUMMARY OF THE INVENTION The present invention aims to solve the above-mentioned drawbacks and provide an inexpensive recording medium container that has a simple configuration, can discriminate between several types of recording media, and is inexpensive.

Means to solve problems The present invention is provided in a casing in which a recording medium is housed.

When the casing is attached to the main body of the recording and reproducing device, the reflective plate arranging portion is provided at a position that can face a reflective photodetector provided on the main body of the recording and reproducing device. This is a recording medium storage body configured so that the type of recording medium stored in the housing can be determined by providing a reflective plate having a reflectance corresponding to the type of recording medium.

Effect of the Invention With the above-described configuration, the present invention allows the same jacket housing to be used regardless of the type of recording medium, and furthermore, the detection means can be configured with the only reflective photodetector in the main body of the recording/reproducing apparatus. Therefore, it is possible to discriminate between several types of recording media with a simple configuration, and the cost can be reduced.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 3.

First, let's talk about the structure of the disc jacket.
This will be explained with reference to FIG. Reference numeral 1 denotes a disk, and a hole is formed in the center of the disk to gather at the drive section of the disk motor so that the disk 1 can be rotationally supported by the disk motor.

On the other hand, the jacket housing 2 that rotatably houses the disk 1 is composed of an upper half 2a and a lower half 2b made of an injection molded product such as MuBS resin containing an antistatic agent. The lower half 21L and the lower half 2b are welded together to form a substantially rectangular parallelepiped shape. Further, each of the upper half 2a and the lower half 2b is provided with a circular center hole 3 and a head insertion hole 4 for inserting the head approximately in the center thereof.

Reference numeral 6 designates recesses provided on the outer surfaces of the upper half 21L and the lower half 2b in which the center hole 3 and head insertion hole 4 are formed, respectively. A guide groove e is formed. These guide grooves may be provided in either the upper half 2a or the lower half 2b.

7 is a shutter having a U-shaped cross section for opening and closing the center hole 3 and the head insertion hole 4;
1 is molded from synthetic resin or the like.

This shutter 7 is attached to be slidable in a predetermined direction within a recess 6 provided in the above-mentioned upper half 2a and lower half 2b. That is, at least two or more semicircular protrusions 8 are formed on the τ shutter 7 by 2less or integral molding, corresponding to the guide grooves e provided in the recesses 6 of the upper half 2&. , when this protrusion 8 is inserted into the guide groove e, the shutter 7 is guided by the guide groove 6, and as shown in FIG.
This means that it can be slid in any direction. Note that the protrusion 8 is
Reference numeral 09, which may be formed in a V-shape or a U-shape, is a reflection plate disposed portion for determining the type of recording medium, and is asymmetrically provided in the upper half 2a and the lower half 2b. This reflective plate arrangement portion 9 is provided at a position where it can face a reflective photo-microsensor provided on the recording/reproducing apparatus main body when the jacket housing 2 is attached to the recording/reproducing apparatus main body. By providing an arbitrary reflector among at least two types of reflectors having different reflectances in the reflector arrangement portion 9, it is possible to discriminate between at least two types. For example, paper with different reflectance is used in the reflective plate placement part 9.
A disk with the highest reflectance among metal plates and mirrors is used as a read-only disk, a metal plate with an intermediate reflectance is used as a recording/reproduction disk, and a mirror with a reflectance other than the mirror or metal plate is used as a read-only disk. If a plate, that is, paper with the lowest reflectance, is used as an erasable disc, when the jacket housing 2 is attached to the recording/reproducing apparatus, the reflective photo frame provided on the recording/reproducing apparatus will be removed. The type of disc can be determined by detecting the difference in the reflectance of the reflectors in the reflector arrangement section 9 using a microsensor. If a reflector with a reflectance other than the above-mentioned paper, metal plate, or mirror is provided, it will be considered an erasable disc.0 Note that if a reflector is not provided in the reflector installation section 9, the reflectance of the jacket housing will be It is assumed that a reflector with the same reflectance is installed.

Further, the photo microsensor shown in FIG. 3 will be explained. 1
0 is a reflective photo micro sensor.

It is provided in the main body of the recording and reproducing apparatus, and detects the difference in the reflectance of the reflectance plate 15 of the reflection plate arrangement part 9 of the Jahut housing 20. 1
1 is a light emitting element, and 12 is a light receiving element. Reference numeral 13 denotes an analytical light emitted from the 5 light emitting elements 11. Reference numeral 14 denotes reflected light, which is light for detecting the difference in reflectance of the reflector. 1
Reference numeral 6 denotes a reflector made of a metal plate, for example, which has a higher reflectance than paper and a lower reflectance than a mirror, and when this plate is placed above the reflective photo-microsensor 10, reflected light 14 corresponding to an intermediate reflectance is generated. is detected by the light receiving element 12.

When it is necessary to distinguish between two types of reflective photo-microsensors 101'j, a reflector with a certain reflectance X is determined to be one disk X, and a reflector with a reflectance other than In the case of a reflector, it is determined that it is another disk Y. Furthermore, if three types of types need to be distinguished, a reflector with a reflectance of 1 is determined to be disk X, a reflector with a reflectance of y other than reflectance X is determined to be disk Y, and A reflector having a reflectance of 2 other than X and reflectance y is determined to be the disk 2. Similarly, even if it is necessary to discriminate four or more types, this can be handled by sequentially setting reflectors with reflectances other than 1 reflectance x 9 reflectance y.

For example, among paper, metal plates, and mirrors, a mirror with the highest reflectance is determined to be a read-only disc, a metal plate with an intermediate reflectance is determined to be a recording/reproduction disc, and non-mirrors, metal plates, etc. When the reflectance is , it is determined that the disc is erasable. Therefore, in this case, the disc is determined to be erasable regardless of whether the reflective plate disposed portion 9 is provided with paper or is not provided with a cover.

Next, we will explain the operation of the disc jacket in Figures 1 to 3.
This will be explained using figures.

Figure 2 shows the jacket housing 2 before it is inserted into the device, and the center hole 3 and head insertion hole 4 are provided with a shutter 7 to prevent dust from entering the jacket housing 2 from the outside.
It is completely closed. Here, when the jacket housing 2 is inserted into the apparatus in the direction D in FIG. 2 by grasping the side C in FIG. 2, the shutter 7i; Move in direction A QK in Figure 1. At the same time, the reflective plate placement portion 9 of the jacket housing 2 is connected to a reflective photomicrocell 10 provided in the device.
When the position is reached, the reflector 1 provided in the reflector placement part 9
Reflected lights 1 and 4 corresponding to a reflectance of 5 are emitted and are detected by the light receiving element 12.

Therefore, the type of disc can be determined by detecting the difference in reflectance between the reflectors 16 provided in the reflector 9 of the jacket housing 2.

Effects of the Invention As is clear from the above description, according to the present invention, a reflective plate installation part is provided in the jacket housing, and the difference in reflectance of the reflectance plates provided in the reflection plate installation part is detected. By doing this, the type of recording medium can be determined, which not only makes it possible to share the jacket housing, but also requires only one reflective photodetector as a detection means, resulting in a simple configuration. Moreover, it is possible to distinguish between several types of recording media, and it is possible to provide an inexpensive recording medium storage body.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an embodiment of the recording medium storage device of the present invention showing the shutter in an open state, FIG. 2 is a perspective view of the same shutter in a closed state, and FIG. 3 is a perspective view of the same jacket. FIG. 3 is a cross-sectional view showing a recording medium type determination mechanism. DESCRIPTION OF SYMBOLS 1... Disk, 2... Jacket housing, 9... Reflection plate arrangement part, 1o... Reflective photo microsensor, 16... ·····a reflector. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 3: 7 steps Figure 2: 7L ship attack

Claims (1)

[Claims] A casing capable of housing a recording medium on which information is recorded or reproduced, and a reflective plate disposed in a region of the casing that can face a reflective photodetector provided on the main body of the recording/reproducing device. and a reflecting plate having a reflectance indicating the type of the recording medium, the reflecting plate being provided in the reflecting plate arrangement part.