JPS6289261A - Recording and reproducing device for optical recording medium - Google Patents

Abstract

PURPOSE:To hold stably an optical recording medium and to record and reproduce accurately the information by attaching an optical recording card to a supporter so that the coincidence is secured between the center of the recording part of the card and the revolving center of the supporter and pressing a part of the card to a rotor. CONSTITUTION:The clamp members 20 and 21 are set between a supporter 11 and the holders 16 and 17 respectively and pressed strongly to the supporter 11 by means of springs 22 and 23 of the holders 16 and 17. Thus an inserted optical recording card 12 is held flat by both springs 22 and 23. While a support shaft 24 is set at the center part of the rear side of the supporter 11 and a motor is coupled directly to the shaft 24. In such a way, the card 12 is held tightly by the supporter 11 to avoid such a case where the card 12 gets out of the supporter 11 or the positional relation has a shift between a recording part 12a and the shaft 24 despite the revolutions of the supporter 11. In such a way stable record/reproduction of information is secured.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a recording and reproducing apparatus for an optical recording medium that records and reproduces information by rotating an optical recording card, for example.

[Technical Background of the Invention and Problems Therewith] As is well known, a CD (compact disc) is known as a means for rotating and reproducing optically recorded information.

Since this CD is made of a relatively thick acrylic plate, it can be rotated stably by holding the central portion. However, in the case of optical recording cards, since the card itself is thin, it is prone to warping, etc., and if it is rotated while holding only the central part of the recording area like the CD, it is difficult to rotate stably, resulting in reading errors. However, there have been problems in that it is easy for errors such as errors and charges to occur.

[Purpose of Defense] This invention was made based on the above circumstances,
The purpose is to provide a recording and reproducing device for an optical recording medium that can stably hold an optical recording medium and reliably record and reproduce information using a relatively simple configuration. It is something.

[Summary of the Invention] The present invention includes, for example, mounting an optical recording card on a support such that the center of its recording portion coincides with the center of rotation of the support, and pressing at least a portion of the optical recording card against the support. It was designed to do so.

[Embodiments of the Invention] Hereinafter, a practical example of the present invention will be described with reference to the drawings.

1 to 3, an optical recording card 1 is inserted into the long part of the support 11 from one end of the support 11.
Guide parts 13, 14 are provided for guiding and holding the two long parts. A stopper portion (A15) is provided at the other end of the support body 11 between the guide portions 13.14. A holder 16.17 is provided between the holders 16 and 17 and separated by a predetermined distance.
17 and near one end of the support 11 are provided pinch rollers 18 and 19 for moving the inserted optical recording card 12 toward the other end of the support 11. Additionally, clamp members 20.21 are provided between the holder 16.17 and the support 11, respectively, and these clamp members 20.21 include the holder 16.17.
There are springs 22, 23 which are placed in the support body 11 and are pressed firmly against the support 11 by these springs 22, 23. Therefore, the inserted optical recording card 12 is held flat by these clamp members 22, 23. Further, a support shaft 24 is provided on the back side of the support body 11, and, for example, in the center thereof, and a motor (not shown) is connected to this support shaft 24. Therefore, by rotating the motor, the support body 1 is rotated around this support shaft 24.

Further, when the optical recording card 12 is attached to the support body 11, as shown in FIG.
The stroke is made so that the center P of a is aligned with the support shaft 24. Information is recorded in this recording section 12, for example, in a spiral or concentric manner.
When recording and reproducing information a, the support 11 and the optical recording card 12 are rotated in the direction indicated by the arrow in FIG. 12a in the radial direction. Also,
When the recording and reproduction of information on the optical recording card 12 is completed, the optical recording card 12 is taken out from the support body 19 by the pinch rollers 22 and 23.

The pinch rollers 18 and 19 may be separated from the surface of the optical recording card 12 during recording and reproduction of the optical recording card 12 so that they do not rotate together with the support 11.

FIG. 5 shows the circuit configuration of the recording/reproducing apparatus. When reproducing information recorded on the optical recording card 11, the pickup control section 31 transfers vJl! The optical pickup 25 irradiates the optical recording card 12 with a laser beam, and the reflected light from the optical recording card 12 is converted into an electrical signal.

The output signal of the optical pickup 25 is supplied to a decoding section 33 via an amplifier 32 and decoded. This decoded information is provided to host computer 34.

On the other hand, when recording information on the optical recording card 12, recording information output from the host computer 35 is supplied to the encoding section 36. In the encoder 36, the encoded information is supplied via an amplifier 37 to the optical pickup 25 whose movement is controlled by the pickup controller 31. The optical pickup 25 generates a laser beam in accordance with the supplied information, and the information is recorded on the optical recording card 12 by this laser beam.

According to the above embodiment, the clamp member 20 is attached to the support body 11.
21, a spring 22.23 is provided to press the clamp member 20.21 against the support 11, and the inserted optical recording card 1
2 is strongly pressed against the support 11 by the clamp portion 020.21, the warp or distortion of the optical recording card 12 is corrected, and the optical recording card 12 is held on the support 11 in a flat state. . Moreover, since the optical recording card 12 is strongly held on the support body 11, when the support body 11 is rotated, the optical recording card 12 may come off the support body 11, and the position of the recording section 12a and the support shaft 24 may change. The relationship will not deviate. Therefore, it is possible to stably perform recording and reproduction on the optical recording card 12.

In addition, in the above embodiment, the clamp members 20, 21 and the spring 22
．． 23 to attach both side edges of the optical recording card 12 to the support 1.
For example, the clamp member may be made of a transparent material such as glass, and the optical recording card 1 may be held in pressure contact with the optical recording card 1.
If the surface of No. 2 is brought into pressure contact with almost the entire surface, even higher flatness can be obtained.

Further, the holding structure for the optical recording card can also be configured as shown in FIG. That is, in FIG.
1 is made of a translucent member such as glass, and a guide groove (not shown) is provided in a good part of the holder 51 to guide and hold the optical recording card 12 inserted from one end in the longitudinal direction. is being pulled. Further, a stopper 52 is provided at the other end of the holder 51, with which the inserted optical recording card 12 comes into contact. Further, a support body 53 is attached to this holding body 51. This support 5
Springs 55 and 56 are provided between the back surface of the card 3 and the base 54, and when the optical recording card 12 is inserted into the holder 51, the base 54 is moved toward the holder 51 and is supported. Due to the biasing force of the springs 55 and 56, the body 53
It is pressed against the optical recording card 12. The holder 51 and the base 54 are connected by a structure (not shown) that controls the distance between them, and the holder 5 is rotatable together with the base 54. Even with such a configuration, it is possible to obtain the same effects as in the above embodiment.

It goes without saying that various other modifications can be made without departing from the gist of the invention.

[Effects of the Invention] As detailed above, according to the present invention, an optical recording medium can be stably held with a relatively simple configuration, and information can be recorded and reproduced reliably. A recording and reproducing device for optical recording media can be provided.

Fig. 1 is a plan view, Fig. 2 is a partially cutaway side view, and Fig. 3 is a partially cut away side view.
FIG. 4 is a plan view showing a state in which an optical recording medium is installed; FIG. 5 is a configuration diagram showing a control circuit; FIG. 6 is a diagram showing another embodiment of the present invention. FIG.

11...Support, 12...Optical recording card, 12a.
...recording section, 16.17...holding body, 20.21...
・Clamp member, 22.23...spring.

Figure 1 Figure 2 Figure 3

Claims (5)

[Claims] (1) a support to which a flexible optical recording medium is mounted, the surface of which is provided with a recording portion in a spiral or concentric arc shape, and a holding means for holding the optical recording medium on this support;
A recording/reproducing apparatus for an optical recording medium, comprising a drive means for rotating the support. (2) The recording/reproducing apparatus for an optical recording medium according to claim 1, wherein the optical recording medium is an optical recording card. (3) The recording/reproducing apparatus for an optical recording medium according to claim 1, wherein the optical recording medium is held in alignment with the rotation center of the support. (4) The recording/reproducing apparatus for an optical recording medium according to claim 1, wherein the holding means presses a part of the optical recording medium. (5) The recording/reproducing apparatus for an optical recording medium according to claim 1, wherein the holding means is made of a transparent member and is pressed against the entire surface of the optical recording medium.