JPH03216886A - Recording and reproducing device - Google Patents

Abstract

PURPOSE:To effectively prevent dust from sticking to a recording medium by providing a blocking member for enabling a head to move on the recording medium and blocking an opening part when a cartridge holder has moved to its using position. CONSTITUTION:When the cartridge 13 having the recording medium 12 is inserted into the recording and reproducing device 11, the cartridge 13 is opened, and the cartridge holder 21 is moved into its using position. Then, the opening part 17 of the cartridge is blocked under the movable condition of the head 19 by the blocking member 22 on the cartridge holder 21 via the cartridge holder opening part 25. At the time of blocking the opening part 17 by the blocking member 22, the head is moved to approach the recording medium 12 facing the opening part 17 of the cartridge and the cartridge holder opening part 25. By this method, the dust stuck to the cartridge 13 is prevented by the blocking member 22 from intruding into the cartridge 13 via the opening part 17 and sticking to the recording medium.

Description

[Detailed description of the invention] [Industrial application fields] The present invention relates to a recording/reproducing device for a recording medium.

[Prior Art] In recent years, optical playback devices, typified by optical disc playback devices, have been widely used because they can perform large-capacity recording without contacting the recording medium. There is. Furthermore, magneto-optical disk recording and reproducing devices that allow information to be rewritten are about to enter the stage of practical use.

Some of these magneto-optical disk recording and reproducing devices use a floating magnetic head. In this method, a light beam is irradiated onto the recording medium, and a head with a shape similar to that used in hard disk drives, that is, a floating magnetic head, is
Information is rewritten by levitating the floating magnetic head above a rotating recording medium at an interval of several μm and applying magnetic field modulation to the floating magnetic head.

[Problems to be Solved by the Invention] However, in a magneto-optical disk recording/reproducing device using a floating magnetic head, when a cartridge containing a magneto-optical disk is inserted into the recording/reproducing device, dust adhering to the cartridge may leak into the opening of the cartridge. from inside the recording medium. Therefore, there is a risk that dust may enter the gap between the recording medium and the floating magnetic head, damaging the recording medium or causing a writing error.

Therefore, an object of the present invention is to provide a recording/reproducing apparatus that prevents dust from adhering to a recording medium. a cartridge holder capable of moving a cartridge containing a recording medium to a use position; a head movable close to the recording medium through the opening; This is achieved by including a closing member that allows the head to move over the recording medium and closes the opening.

Operation] When a cartridge containing a recording medium is inserted into a recording/reproducing apparatus, the cartridge is opened and the cartridge holder is moved to the use position. As a result, the closing member on the cartridge holder closes the opening of the cartridge through the cartridge holder opening in a state in which the head can move. When the closing member closes the opening, the head approaches the recording medium facing the cartridge opening and the cartridge holder opening. The closing member prevents dust attached to the cartridge from entering the cartridge through the opening and attaching to the recording medium.

[Example code] Examples of the present invention will be described in detail below.

FIG. 2 is a schematic perspective view showing an entire magneto-optical disk recording and reproducing apparatus as an embodiment of the recording and reproducing apparatus of the present invention.

A main body 11 of the magneto-optical disk recording/reproducing apparatus is provided with a floating magnetic head, an optical head, a spindle motor, etc., which are not shown in the figure. Cartridge entrance/exit l4
When the cartridge I3 is inserted through the cartridge 13, the recording medium I2 contained in the cartridge 13 can be driven by a spindle motor. In the figure, the shirt cover 16 of the cartridge I3 is closed.

FIG. 3 is a diagram showing the appearance of the cartridge l3.

As shown in the figure, an opening l7 that exposes a part of one side of the recording medium 12 and a shutter 1 that opens and closes this opening I7.
6 is provided movably in the direction of arrow A. An opening (not shown) is also provided on the opposite side of the cartridge 13, and this opening is configured to be opened and closed by the shutter 16 at the same time as the opening 17. The shutter 16 is normally closed by a spring (not shown), and is shown in an open state in FIG.

The opening 17 and the opening on the other surface (not shown) are provided for inserting the above-described floating magnetic head and optical head, respectively. The details of the configuration of such a cartridge 13, for example for a 3.5-inch magneto-optical disk, are determined by the ISO standard (draft).

FIG. 1 is a perspective view of the main parts of this embodiment. In the figure, a floating magnetic head 19 is attached to a suspension 20 made of an elastic plate.
attached to the tip of the The suspension 20 is attached to one end of the head support member 15. An optical head (not shown) serving as a light transmitting/receiving means is attached to the other end of the head support member 15. Floating magnetic head 1
The optical head 9 and the optical head are configured in a substantially U-shape so as to approach the recording medium via the cartridge holder 21. The cartridge holder 21 is provided in the main body of the magneto-optical disk recording/reproducing device, and this is the cartridge holder 21.
is configured so that it is loaded in the direction of arrow B when inserted.

For example, a laser diode is used as the light transmitting means of the optical head, and a phototransistor is used as the light receiving means.

Further, a holder opening 25 larger than the opening 17 is formed in the cartridge holder 21 at a portion corresponding to the opening 17 of the cartridge 13 to be inserted therein. A bracket 3G is fixed onto the cartridge holder 21. A closing member 22 is rotatably attached to the bracket 30 around a rotating shaft 23. This closing member 22 is biased by a presser spring 24 attached to the rotating shaft 23 so that its tongue portion 22a rotates in the direction of the holder opening 25. As a result, the tongue portion 22a comes into contact with the surface of the cartridge 13 through the holder opening 25 and closes the opening 17.

A notch 26 is provided at the distal end of the closing member 22, and the notch 26 is configured so as not to impede movement of the floating magnetic head l9.

A cam piece 27 is connected to the base of the closing member 22.

This cam piece 27 has a tapered portion 27a so that an elevating pin 29 attached to a fixed plate 28 can be engaged and disengaged.

A spindle motor 3l is provided at the bottom of the cartridge holder 21 to rotate the recording medium 12 in the cartridge 13 (FIG. 4). The optical head 18 is driven by a drive means such as a linear motor (not shown) to drive the recording medium 12.
It is possible to move from the inner circumference to the outer circumference. Therefore, the floating magnetic head 1 attached to the optical head 18
9 and suspension 2o also move in the same direction.

FIGS. 4 and 5 are explanatory diagrams illustrating the operation of the magneto-optical disk recording and reproducing apparatus of this embodiment.

Immediately after insertion, the cartridge 13 is in a state before loading, as shown in FIG.

Cartridge holder 21 from the cartridge entrance/exit of the main body
Insert the cartridge 13 inside. In this state, the elevating pin 29 fits into the tapered portion of the cam piece 27 to open the closing member 22 against the presser spring.

At this time, the floating magnetic head 19 attached to the optical head l8 is moved by a magnetic head elevating mechanism (not shown).
The cartridge 13 is facing the upper position thereof.

FIG. 5 shows the state after loading.

When the cartridge 13 is loaded to the use position in this manner, the cartridge holder 21 is also displaced in the same direction, and the tapered portion of the cam piece 27 is disengaged from the lifting pin 29. Therefore, the closing member 22 receives the elastic force of the presser spring and closes the opening 17 with its tongue portion 22a. At this time, the floating magnetic head 19 is moved above the recording medium 12 in the same direction as the loading direction or in the opposite direction.

Therefore, the tongue portion 22a of the closing member 22 covers the periphery of the opening 17 without interfering with the movement of the floating magnetic head 19 and the suspension 20.

The loading of the cartridge 13 may be performed automatically by inserting the cartridge holder 2l, or may be performed manually.

As a result, even if the recording medium 12 is driven by the spindle motor 3l and an air flow is generated with dust attached to the surface of the cartridge 13, the above-mentioned dust will be removed from the recording medium 13.
It is possible to avoid falling and adhering to 2.

In this way, it is possible to prevent dust from adhering to the floating magnetic head 19 side of the recording medium 12, where the influence of dust adhesion is particularly large, and to perform stable and reliable recording or reproducing without write errors. can.

This embodiment is not limited to a magneto-optical disk recording/reproducing device, but may be used in a recording/reproducing device for recording media such as magnetic cards, optical cards, floppy disks, etc.

Furthermore, the present invention is not limited to a recording/reproduction device, and may be used in a recording-only device or a reproduction-only device.

[Effects of the Invention] As described in detail above, the present invention includes a cartridge holder that has an opening that opens when in use and is capable of moving a cartridge containing a recording medium to a usage position, and The cartridge includes a head movable close to the recording medium, and a closing member that enables the head to move over the recording medium and closes the opening when the cartridge holder moves to the use position. Adhering dust can be effectively prevented from falling onto and adhering to the recording medium, and therefore the recording medium will not be scratched, writing errors can be prevented, and information processing can be performed in good condition. is obtained.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the main parts of a magneto-optical disk recording and reproducing device according to an embodiment of the present invention, FIG. 2 is a perspective view showing the external appearance of the device according to the embodiment of FIG. 1, and FIG. A perspective view showing a disk cartridge, and FIGS. 4 and 5 are explanatory diagrams for explaining the operation of the embodiment. 11...Main body of magneto-optical disk recording and reproducing device,
12... Recording medium, l3... Cartridge, 14... Power cartridge entrance/exit, 15...
...Head support member, 16...Shutter,
17...Aperture, l...Optics, 19...Floating magnetic head, 21...
- Cartridge/Sojihoreda, 22...Closing member, 25...Holder opening. Shun 1 (504) Sharp Corporation Figure 3 Figure 4 Figure 5 1″3

Claims (1)

[Claims] a cartridge holder that has an opening that opens when in use and is capable of moving a cartridge containing a recording medium to a use position; a head that is movable close to the recording medium through the opening; and the cartridge holder; A recording/reproducing device comprising: a closing member that closes the opening while allowing the head to move over the recording medium when the head is moved to the use position.