JP3281745B2 - Optical information recording device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical information recording apparatus for recording information by irradiating a light beam onto a disk-shaped optical information recording medium contained in or contained in a cartridge. It is. More specifically, the present invention relates to an optical information recording medium capable of recording and reproducing, such as a magneto-optical disk,
The present invention relates to a dual-purpose optical information recording apparatus capable of handling a read-only optical information recording medium such as a CD-ROM or a CD-ROM by a single apparatus.

[0002]

2. Description of the Related Art Disc-shaped optical information recording media are classified into a read-only type, a write-once type, and a rewritable type. The playback-only type is a video disk, compact disk (CD),
It is widely used as a CD-ROM or the like. They are,
After being taken out of the storage case, placed alone on the tray of the reproducing apparatus, and moved to the reproducing position, the recorded information can be read and reproduced by the optical head. The rewritable type includes a magneto-optical type, a phase change (crystalline amorphous transformation) type, an organic dye type, and the like. Of these, a magneto-optical type disk is frequently used.
The magneto-optical disk is housed in a cartridge. Then, the cartridge is mounted on the recording device as it is, the opening / closing shutter provided on the cartridge is opened, and information is recorded on the disk by the optical head and the magnetic head for recording, and information is read from the disk by the optical head. You can do it.

FIG. 12 shows the principle of a CD-ROM, a write-once disc, and a magneto-optical disc. The CD-ROM is a read-only type. As shown in FIG. 12A, the pits formed on the surface of the disk are irradiated with a laser beam to detect the intensity of the reflected light and record the data on the disk. The reproduced information is reproduced. The write-once disc is capable of recording only once, and as shown in FIG. 12B, pit holes are formed in the disc by laser light to record information, and FIG. As shown in (1), the intensity of the reflected light of the laser beam is detected to reproduce the information recorded on the disk. The magneto-optical disk is writable and erasable. As shown in FIG. 12D, the direction of perpendicular magnetization is reversed by applying a magnetic field while reducing the coercive force by irradiating a laser beam. As shown in FIG. 12 (e), by irradiating a laser beam, the rotation of the polarization plane of the reflected light is detected using the Kerr effect based on the difference in the perpendicular magnetization direction. The information is reproduced.

[0004] In recent years, with the progress of multimedia, it has become increasingly necessary to effectively utilize an optical information recording medium capable of handling a large amount of information. As described above, manufacturing a reproducing apparatus for a read-only optical information recording medium or a recording apparatus for a write-once or rewritable optical information recording medium, respectively, requires a driving means having a similar or similar structure. Therefore, two expensive components such as an optical head are used, which increases the manufacturing cost. Also, from the user's standpoint, only the installation space for optical information recording media equipment requires two units: a read-only type, a write-once type, and a rewritable type. Given the need for expansion of other information recording medium devices such as discs and input / output devices such as image scanners, such devices as optical information recording media devices such as read-only type, write-once type, and rewritable type It is preferable that the similar device be as small as possible and easy to use. In view of the above, in order to respond quickly to multimedia, for example, the difference in specifications between a read-only optical information recording medium such as a CD and a CD-ROM and a rewritable optical information recording medium which is a magneto-optical disk. Regardless of this, it is desirable that it can be used by a common optical information recording device.

[0005] On the other hand, a read-only optical information recording medium such as a CD or CD-ROM is taken out of a storage case at the time of use, and mounted and used alone in a reproducing apparatus. -In addition to the possibility that dirt, fingerprints, dust, etc. adhere to the surface of the ROM, CDs and CD-ROMs
When reproducing the data, foreign matter is apt to be present on the surface, which may cause a reproduction failure of the recorded information. To prevent this, CD, C
It is preferable that the recorded information can be reproduced with the D-ROM stored in the cartridge. To this end, even if the optical information recording medium is different as described above, the optical head and the like are shared, and a cartridge compatible with both the read-only type, the write-once type, and the rewritable type optical information recording medium can be flexibly handled. A type recording device is preferable from the viewpoint of manufacturing cost, ease of use, and the like.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances and has been made as a result of earnest research. The present invention shares a driving means, an optical head and the like, and uses a magneto-optical system, a phase change system, and the like. Rewritable type such as organic dye method, perforation method,
Write-once type such as phase change method and bubble forming method, and C
D, a recording device that can flexibly deal with any read-only optical information recording medium such as a CD-ROM, etc. In other words, an optical information recording medium housed in a cartridge such as a magneto-optical disk And an optical information recording device in which an optical information recording medium stored in a storage case such as a CD or a CD-ROM is taken out of the storage case and stored in a reproduction cartridge. The purpose is to:

[0007]

SUMMARY OF THE INVENTION The object of the present invention is to provide a method for recording information on a magneto-optical disk of a disk-shaped optical information recording medium by bringing a recording magnetic head close to the surface of the magneto-optical disk. At the time of reproducing information from a magneto-optical disk, at the time of reproducing information from an optical information recording medium such as a CD or a CD-ROM, and at the time of recording or reproducing on a write-once optical information recording medium. Has a recording magnetic head control mechanism capable of retracting the recording magnetic head, and further determines the type of the optical information recording medium and enables or disables writing of information on the optical information recording medium. This problem has been solved by providing a discriminating mechanism for discriminating the recording magnetic head as described above. More specifically, (i) the optical information recording device includes a rotation drive unit for an optical information recording medium, a cartridge holder, an optical pickup slidable in the front-rear direction, and a magnetic head for recording. The recording magnetic head is rotatable between a recordable position facing the objective lens provided on the optical pickup and a retracted position away from the objective lens, and is slidable in the same direction as the optical pickup. A first arm member, a rotating means for the first arm member, and a connecting means for sliding the first arm member following sliding of the optical pickup in the front-rear direction. I do. The loading and mounting of the cartridge into the cartridge holder may be of a well-known structure in which the cartridge is manually inserted and loaded and mounted, or the cartridge can be automatically loaded and loaded and mounted. (Ii) The rotation means of the first arm member uses the guide shaft provided in the cartridge holder as a rotation support shaft and has a length at least equal to or longer than the sliding distance of the optical pickup. It is preferable to include a tilting member and a rotation mechanism for rotating the tilting member about a guide shaft. (Iii) As a rotation mechanism, a slide cam member fixed to a lever reciprocating in the front-rear direction by a driving source, and a slide cam member abutting at a position eccentric from the rotation support shaft of the inclined member. And a pressing spring for constantly urging the first arm member counterclockwise. As a driving source, an electromagnetic solenoid, a laminated piezoelectric actuator, or the like can be appropriately used. (Iv) The slide cam member has a flat triangular wedge shape having an inclined surface on which a tip of a cam pin provided on the inclined member comes into contact and slides, and the inclined member has at least a sliding distance of the optical pickup or more. It is preferable that a ridge having a length is provided, and the lower surface of the first arm member is line-contacted and supported by the ridge. (V) The cartridge holder can be moved up and down while maintaining a horizontal state between an eject position and a loading position by an elevating mechanism, and an L-shaped second arm member protrudes horizontally from a lower side of the optical pickup. At the tip of the L-shaped second arm member, a cross-shaped notch having a depth at least as long as the elevation distance of the cartridge holder is provided along a direction coaxial with the optical axis of the objective lens of the optical pickup. The notch in the same direction as the sliding direction is a relief for the guide shaft, and the notch in the direction perpendicular to the sliding direction of the optical pickup is a relief for the pressing spring. The base end of the first arm member and the L-shaped 2
It is preferable that it is a connecting means for connecting the tip end of the arm member via a guide shaft. (Vi) In the optical information recording apparatus having the above configuration, the type of the optical information recording medium and the means for determining whether or not the optical information recording medium can be written are determined by the magnetic information for recording at the tip of the first arm member. It is preferable that the position change between the recordable position and the retracted position of the head is controlled.

[0008]

According to (i), first, an optical information recording medium in the form of a disc is loaded by an appropriate loading method such as manual or automatic.
It is mounted on the cartridge holder by the mounting means.
When reproducing information recorded on an optical information recording medium, a writable / reproducible magneto-optical disc, a write-once optical disc which can be written only once, a read-only CD, a CD-RO
Regardless of M, the rotation means of the first arm member and the first arm member do not operate, and as a result, the recording magnetic head at the tip of the first arm member is in the retracted position away from the objective lens of the optical pickup. Keep staying. In such a state, the optical pickup slides back and forth with the rotation of the optical information recording medium, and reads and reproduces information from the optical information recording medium by a light beam from the objective lens. At this time, the recording magnetic head follows the sliding of the optical pickup in the front-rear direction while keeping the retracted position.
Also in the case of recording on a write-once optical disc, the rotation means of the first arm member and the first arm member do not rotate, and the recording magnetic head is maintained at the retracted position, as described above.
When information is recorded on the magneto-optical disk, the rotation means of the first arm member operates to rotate the first arm member,
As a result, the recording magnetic head is held close to the recordable position facing the objective lens provided on the optical pickup. In such a state, the optical pickup slides in the front-back direction with the rotation of the optical information recording medium, and writes and records information on the optical information recording medium by the action of the light beam and the magnetism. According to (ii), the rotation means of the first arm member uses the guide shaft attached to the cartridge holder as the rotation support shaft and has a length at least equal to or longer than the sliding distance of the optical pickup. By adopting a support inclination member and a rotation mechanism for rotating the inclination member about the guide shaft, the inclination member moves the guide shaft attached to the cartridge holder by the operation of the rotation mechanism. The first arm member is rotated as a rotation support shaft, and can be slid in the front-rear direction on the inclined member following the sliding of the optical pickup while being maintained at the retracted position. (I
According to ii), as a rotating mechanism, a slide cam member fixed to a lever that reciprocates in a front-rear direction by a driving source, and a slide cam member protruded at a position eccentric from the rotation support shaft of the inclined member. By adopting a contact cam pin and a pressing spring which constantly urges the first arm member in a counterclockwise direction, the lever is moved in the forward direction by the drive source, so that the slide cam member is brought into contact with the cam pin. The first arm member can be rotated to the retracted position against the urging force of the pressing spring by rotating the inclined member about the guide shaft. On the other hand, by moving the lever in the backward direction by the drive source, the contact of the slide cam member with the cam pin is released, and the biasing force of the pressing spring rotates the first arm member to the recordable position together with the inclined member. it can. According to (iv), the slide cam member is
The tip of a cam pin provided on the inclined member has a flat triangular wedge shape having an inclined surface that slides in contact with the inclined portion, and the inclined member is provided with a convex ridge having a length at least equal to or longer than the sliding distance of the optical pickup. The lower surface of the first arm member is supported in line contact with the protruding ridge portion, so that the inclination member is moved via the cam pin which comes into contact with the inclination surface of the slide cam member by the forward movement of the lever by the drive source. It is rotated around the guide shaft against the urging force of the holding spring, and the first
The arm member can be turned to the retracted position.
According to (v), the cartridge holder can be moved up and down while maintaining the horizontal state between the eject position and the loading position by the elevating mechanism, and the L-shaped second arm member projects horizontally from the lower side of the optical pickup. And
At the tip of the L-shaped second arm member, a cross-shaped notch having a depth at least as long as the elevation distance of the cartridge holder is provided along the same axis as the optical axis of the objective lens of the optical pickup. The cut in the same direction as the movement direction is a relief for the guide shaft, and the cut in the direction perpendicular to the sliding direction of the optical pickup is a relief for the pressing spring. The base end of the first arm member and the L-shaped second Since the distal end of the arm member is connected via the guide shaft, even if the cartridge moves up and down between the eject position and the loading position, the guide shaft attached to the cartridge holder has the L-shaped second shaft. The arm is moved up and down without any trouble by the cut in the same direction as the sliding direction of the optical pickup provided on the arm member. In addition, a guide spring is provided in a cut in a direction perpendicular to the sliding direction of the optical pickup, so that the guide shaft moves up and down without being hindered by the guide spring. Then, the inclined member and the first arm member also move up and down following the elevating operation between the eject position and the loading position of the cartridge, so that the state of the inclined member and the first arm member is not affected. . According to (vi), the optical information recording medium is provided with a type determination unit and a write enable / disable determination unit for the optical information recording medium. When the information is recorded on the magneto-optical disk, the position change with the position is controlled based on the signals from the type discriminating means of the optical information recording medium and the writability judging means. Then, the recording magnetic head is brought close to the surface of the magneto-optical disk to perform recording on the magneto-optical disk.
When reproducing information from an optical information recording medium such as a D or CD-ROM, or when recording or reproducing on a write-once optical information recording medium, a recording magnetic field for recording information on a magneto-optical disk is used. Retract the head.

[0009]

The present invention will be described below in more detail with reference to examples. Of course, the present invention is not limited by the following examples. FIG. 1 is a perspective view of an optical information recording apparatus according to an embodiment of the present invention. FIG. 2 is a perspective view of a cartridge containing a disk with a hub capable of recording and reproduction, such as a magneto-optical disk. ) Is a perspective view from the front side, (b) is a perspective view from the back side, and FIG.
FIG. 2 is a perspective view of a cartridge containing a read-only disk such as a D-ROM, wherein FIG.
4B is a perspective view from the back side, FIG. 4 is a partially cutaway perspective view of a main part of a loading mechanism of the cartridge holder of the optical information recording apparatus and a control mechanism of the recording magnetic head, and FIG. 5A is a cross-sectional view showing a state in which the disk stored in the optical disk is mounted on the rotational force transmission mechanism. FIG. 5A is a state in which a magneto-optical disk with a hub is mounted, and FIG.
D, a state in which the CD-ROM is mounted, FIG. 6 is an explanatory diagram of the loading / mounting operation of the magneto-optical disk, (a) is before insertion of the cartridge into the cartridge holder, (b)
Shows the state when the cartridge is inserted, (c) shows the state when the mounting of the cartridge is completed, FIG. 7 shows the state when loading or reproducing the magneto-optical disk, (a) is a perspective view, and (b) 8A is a plan view, FIG. 8C is a side view, FIG. 8 shows a state of recording on the magneto-optical disk, FIG.
9B is a plan view, FIG. 9C is a side view, and FIG.
-ROM loading and mounting operation explanatory diagram, (a)
Before inserting the cartridge into the cartridge holder,
(B) shows when the cartridge is inserted, and (c) shows when the mounting of the cartridge is completed.

As shown in FIG. 1, a slot (1) for inserting a cartridge is opened in the front of the optical information recording device (A). The cartridge insertion slot (1) has a cartridge holder (2) (see Fig. 4).
The optical information recording medium (3), for example, a CD or CD-ROM stored in a cartridge (4) or a cartridge having a hub for magnetic clamping and stored in a cartridge (5) An optical information recording medium such as a magneto-optical disk (6) is inserted from a slot (1), loaded, and mounted on a cartridge holder (2). The loading and mounting of the cartridge into the cartridge holder (2) can be performed by manually inserting the cartridge and loading / mounting the cartridge, or automatically loading the cartridge and loading / mounting the cartridge. It can be adopted, and its detailed description is omitted.

The cartridge (5) containing the magneto-optical disk (6) has a structure as shown in FIG.
FIG. 2 shows a state in which the shutter (7) is open. A magneto-optical disk (6) with a hub (8) is housed in the cartridge (5), and shutters (7) are provided on the upper and lower surfaces of the cartridge for sliding grooves (9), (1).
0), the opening (11) and (12) provided on the upper and lower surfaces of the cartridge are opened by opening the shutter (7), and the both sides of the magneto-optical disk (6) are opened. Is exposed. The shutter (7) has a notch (13) for opening and closing the shutter, and an engaging pin (31) of a shutter open lever (30).
And are opened when the cartridge (5) is inserted into the cartridge holder (2). The opening (11) on the upper surface side of the cartridge faces the recording magnetic head (22), and the opening (12) on the lower surface side.
Is such that the objective lens (23) of the optical pickup (21) faces (see FIG. 4). An arc-shaped opening for transmitting a rotational driving force to the magneto-optical disk (6) is connected to the center of the cartridge (5) at the opening (12) on the lower surface side. The transmission of the rotational driving force to the magneto-optical disk (6) is performed by applying a magnetic attraction force to the hub (8) of the magneto-optical disk by a rotational driving means described later. A detection hole (14) for discriminating whether or not information can be written and for discriminating the type is provided in a front part on the right side of the upper surface of the cartridge (5). The head (22) is provided so as to be slidable in the front-back direction. Detection hole (1
4) Open and slide tab (15)
According to the position, the switch for determining whether or not to write information and the switch for determining the type are inserted or abutted in the detection hole (14), and the optical information recording medium mounted on the cartridge holder (2) is a magneto-optical disk. In addition to the determination, it is possible to determine whether information can be written. An arrow (16) indicating the insertion direction of the cartridge is provided in the vicinity of the detection hole (14) on the upper surface of the cartridge (5), and a label attaching portion (17) is provided on the rear upper surface of the cartridge (5). ing. A pair of positioning reference holes (18) are provided behind the lower surface of the cartridge (5).
Are formed, and a draw-in hole (19) is formed in each side of the cartridge (5). The external dimensions of the cartridge (5), the reference hole (18), the drawing hole (19), and the cutout portion (13) of the shutter
Position and shape conform to the standard of a conventional cartridge for reproducing CDs and CD-ROMs.

A reproducing cartridge (4) such as a CD or a CD-ROM has a structure as shown in FIG. 3, which shows a state in which a shutter (7) is open. CD, CD-
The ROM is taken out of a storage case (not shown), and is stored in an openable and closable reproduction cartridge (4). The reproduction cartridge (4) has a conventional well-known structure having no opening on the upper surface, and has a shape and a reference hole (1).
8), a draw-in hole (19), a cutout portion (13) of the shutter, and an arrow (1) indicating the insertion direction of the cartridge.
6), the label affixing portion (17), and their positions conform to the standard of a conventional cartridge for reproduction such as a CD and a CD-ROM, and are the same as those of the cartridge (5) for the above-described magneto-optical disk. Since the detection hole (14) and the slide tab (15) provided in the cartridge (5) of the magneto-optical disk are not provided,
The switch for determining whether or not to write information and the switch for determining the type can be determined to be the reproduction cartridge (4). Further, the reproduction cartridge (4) is provided with a detection hole for discriminating the medium, so that the type of the reproduction medium and the format format of the medium can be discriminated. The shape, shape, and the like conform to the standard of a conventional cartridge for reproduction. In FIG. 3, the media detection hole is omitted. The write-once optical disk cartridge contains a write-once optical disk having a hub, and has a structure substantially similar to that of a reproduction cartridge (4) such as a CD or CD-ROM, except that it cannot be opened and closed. Therefore, the description is omitted.

The cartridge containing the optical information recording medium is inserted, loaded and mounted on the cartridge holder (2) by a structure as shown in FIG.
Then, the disk-shaped optical information recording medium is rotated by the rotational driving force of the spindle motor (20). Next, an optical pickup (21) slidable in the front-rear direction and a recording magnetic head (22) at the distal end, and the recording magnetic head (22) is provided on the optical pickup (21). A first arm member (24) rotatable between a recordable position facing the lens (23) and a retracted position away from the objective lens and slidable in the same direction as the optical pickup; By a rotating means of the arm member and a connecting means for sliding the first arm member following the sliding of the optical pickup in the front-back direction,
Recording and / or reproduction are performed on an optical information recording medium. FIG. 4 shows a state in which the magneto-optical disk cartridge (5) is mounted from the rear in the drawing, and the structure of the optical information recording apparatus will be described below based on this state.

As shown in FIG. 4, a cartridge holder (2) is provided above the base chassis (25), and a position indicated by a two-dot chain line is raised from the base chassis (25) by an elevating mechanism (not shown) at the time of ejection. In
At the time of loading, it can be moved up and down while maintaining a horizontal state so as to be in a position in close contact with the base chassis (25). As the cartridge lifting / lowering mechanism, a conventionally known mechanism can be used. The cartridge holder (2) is formed by bending a plate-like body so as to open the front and rear and the upper part. The left and right sides of the lower plate (2a) are erected, and further bent inward to have a U-shaped section ( 2b) is formed so that the cartridge can be inserted from behind into a U-shaped section (2b) with a U-shaped cross section as a guide. An opening (2c) is provided at the center of the lower plate (2a) of the cartridge holder, and the lower plate (2a) is attached to the base chassis (25) in the opening (2c) by the loading of the cartridge holder (2). When the optical pickup (2
1) The turntable (26) can enter. An objective lens driving two-dimensional actuator (27) is provided on the upper surface of the optical pickup (21), and the objective lens (23) can be adjusted in the focal direction and the track direction by the actuator (27). The optical pickup (21) can be slid back and forth by a back-and-forth sliding mechanism (not shown) provided on the base chassis (25), thereby moving the objective lens (23) in the radial direction of the magneto-optical disk. Can be. The turntable (26) is connected to the base chassis (2).
It is rotated by a spindle motor (20) fixed to 5) to apply a rotational driving force to the magneto-optical disk (6). The turntable (26) can hold the magneto-optical disk (6) magnetically by a structure described later. In FIG.
The hub (8) of the magneto-optical disk (6) is magnetically attracted and held on the turntable (26). At the right front of the opening of the lower plate (2a) of the cartridge holder, a fixed shaft (2
A shutter open lever (30) is rotatably supported on the fixed shaft (29) so as to be rotatable in a direction indicated by an arrow B. Shutter open lever (30)
An engagement pin (31) is protruded from the lower surface of the tip of the cartridge, and the engagement pin (31) is inserted with the insertion of the cartridge (5).
Engages with the notch (13) of the shutter, the shutter open lever (30) rotates about the fixed shaft (29), and the shutter (7) can be opened. When the cartridge (5) is inserted to a predetermined position, the cartridge (5) is lowered by an elevating mechanism so as to be in close contact with the base chassis (25), and is inserted into a reference pin (not shown) protruding from the base chassis (25). The reference hole (18) of 5) is fitted and positioned, and is fixed to a predetermined position of the base chassis (25) together with the cartridge holder (2). It is to be noted that, instead of a manual loading / mounting structure, a well-known loading / mounting mechanism can be automatically engaged with the cartridge holder (2) of the cartridge by engaging with a drawing hole (19) provided in a side portion of the cartridge. A loading and mounting mechanism can also be used.

A shaft fixing piece (32) is provided on the right side of the U-shaped section (2b) of the cartridge holder (2).
(32) is protruded at a predetermined interval at least as long as the sliding distance of the optical pickup (21), and the shaft fixing piece (3) is provided.
A guide shaft (33) is provided between 2) and (32) along the longitudinal direction of the U-shaped section (2b). The guide shaft (33) has a recording magnetic head (22)
A first arm member (24) having a first arm member (24), and an inclined plate (34) capable of changing the first arm member (24) between a recordable position and a retracted position. The member (24) is slidable along the guide shaft (33). The recording magnetic head (22)
When the optical information recording medium is a magneto-optical disk, it is used for recording information on the magneto-optical disk. The first arm member (24) is slid along the guide shaft (33) by an L-shaped second arm member (35) provided on the optical pickup (21) that slides in the front-rear direction. (24) is connected. Since the guide shaft (33) is also moved up and down by raising and lowering the cartridge holder (2), the first arm member (24) supported by the guide shaft (33) is also moved up and down, so that the L-shaped second arm member ( The connection between the first arm member (24) and the first arm member (24) has a structure that allows the first arm member (24) to move up and down. Specifically, the first
A base end of the arm member (24) is cut in the vertical direction to form a yoke (24a) having an open rear end. The yoke (24a) has a guide shaft insertion hole (2).
4b) is perforated. The insertion hole (24
A guide shaft (33) is inserted through b), and the first arm member (24) is rotatable around the guide shaft (33) in the direction indicated by arrow F and in the direction indicated by arrow G. It is slidable. From the lower right part of the optical pickup (21), an L-shaped second arm member (35), one of which is fixed to the lower surface of the optical pickup (21), projects horizontally, and the L-shaped second arm member ( The other end of the yoke (24) of the first arm member (24)
a). L-shaped second arm member (35)
Is provided with a cross-shaped notch (35a) having a depth at least as long as the elevating distance of the cartridge holder (2) along the coaxial direction with the optical axis of the objective lens (23) of the optical pickup (21). The guide shaft (33) is fitted into the cut in the same direction as the sliding direction of the optical pickup (21), so that the guide shaft (33) can be moved up and down. The coil portion of the coil spring (36) is inserted into the cut in the direction perpendicular to the sliding direction of the optical pickup (21) so that the guide shaft (33) does not hinder elevation. For this reason, the diameter of the coil portion is at least such that the guide shaft (33) can be raised and lowered. One extension of the coil spring (36) is in contact with the upper surface of the first arm member (24), and the other extension of the coil spring (36) is the outer surface of the L-shaped second arm member (35). And the coil spring (36)
The first arm member (24) is always urged counterclockwise by the elastic force of (1). Base chassis (2
A concave portion (25a) is formed on the right side of 5),
The side surface of the L-shaped second arm member (35) does not protrude from the side surface of the base chassis (25), but the L-shaped second arm member (35) is slid in the front-rear direction of the optical pickup (21). In the direction indicated by the arrow G. The recording magnetic head (22) provided at the tip of the first arm member (24) is positioned on the optical axis of the objective lens (23) provided on the optical pickup (21) during recording. It is arranged. According to the above-described cross-shaped notch structure, assembly and disassembly of the L-shaped second arm member (35) and the first arm member (24) are easy, and therefore, repair is easy. In addition, L-shaped second
The connection structure between the distal end of the arm member (35) and the base end of the first arm member (24) is not limited to the above-described structure, but may include a guide shaft (33) associated with the elevation of the cartridge holder (2). It goes without saying that a connection structure that allows the first arm member (24) to move up and down and move the first arm member (24) in the longitudinal direction of the guide shaft is of course preferable.

The rotation of the first arm member (24) in the direction indicated by the arrow F is performed by an inclined plate (34) that rotates around a guide shaft (33). The inclined plate (34) includes a plate-shaped portion (34a) provided with a ridge that can slide along the lower surface of the first arm member (24) in line contact, and a rear arm portion. (34
b) and the front arm portion (34c) have an integral shape. Plate-like portion (34a) of the inclined plate (34)
Has a length at least equal to the sliding distance of the optical pickup (21), and the front arm portion (34c) and the rear arm portion (34b) have guide shaft insertion holes (34).
d) is drilled. Then, the front arm portion (34
A cam pin (37) projecting forward is provided at a lower position eccentric by a predetermined distance from a guide shaft insertion hole (not shown) of c). On the lower plate (2a) of the cartridge holder, a slide cam member (3
8) is provided. The slide cam member (38) is in the shape of a plane triangular wedge, and its inclined surface is a cam pin (3).
7) Adjacent to the tip. A lever (39) is integrally fixed to the slide cam member (38).
The front standing piece (39a) of 9) is connected to an appropriate drive source such as a solenoid or a laminated piezoelectric actuator (not shown). The drive source contacts the slide cam member (38) with the cam pin (37) at the time of non-energization and non-recording other than when recording information on the magneto-optical disk,
The inclined plate (34) is rotated clockwise, the first arm member (24) is rotated clockwise, and the recording magnetic head (2) is rotated.
2) is to be in the retreat position. The lever (39) is provided with a slot (39b) for regulating the sliding direction, and a guide (not shown) provided on the lower plate (2a).
This allows the lever (39) to slide back and forth in the front-rear direction. When the lever (39) moves in the forward direction, the tip of the cam pin (37) comes into contact with the inclined surface of the slide cam member (38), and the inclined plate (34) is moved clockwise about the guide shaft (33). When the lever (39) moves backward, the contact of the inclined surface of the slide cam member (38) with the cam pin (37) is released, and the inclined plate (34) moves counterclockwise. And the lower surface of the inclined plate (34) comes into contact with the upper surface of the U-shaped section (2b) of the cartridge holder and is stopped. The U-shaped section (2b) of the cartridge holder has an inclined plate (3
The stopper function of 4) restricting the counterclockwise rotation to a predetermined position. The rotation of the inclined plate (34) at a predetermined position when rotated in the counterclockwise direction is not performed by the upper surface of the U-shaped section (2b) of the cartridge holder, but is appropriately performed by the cartridge holder (2) or the like. Of course, a stopper may be provided. The clockwise rotation of the inclined plate (34) causes the first arm member (24) to rotate the coil spring (3) about the guide shaft (33).
Rotating clockwise against the biasing force of 6), the recording magnetic head (22) is moved to the retracted position. The rotation of the inclined plate (34) causes the first arm member (24) to move the guide shaft (3).
It rotates in the direction indicated by the arrow F around 3). With such a structure, the recording magnetic head (22) can take two positions, a recordable position and a retracted position. On the front surface of the slide cam member (38), a first lifting / lowering determination switch (40) is provided on the base chassis (25), and behind the rear standing piece (39c) of the lever (39), A second lifting / lowering switch (41) is provided on the lower surface plate (2a) of the cartridge holder. The first lifting / lowering determination switch (40) is for determining that the recording magnetic head (22) is at a recordable position, while the second lifting / lowering determination switch (41) is provided.
Is for determining that the recording magnetic head (22) is at the retracted position. ON when the operating rods of these lifting / lowering discriminating switches (40) and (41) are pushed in
And a signal is issued, and the recording magnetic head (2
The recordable position and the retreat position in 2) can be determined. Signals emitted from the up / down discriminating switches (40) and (41) are input to a control device (not shown) that controls the entire apparatus. The determination of the elevation of the recording magnetic head (22) is not limited to using two switches as described above, and it goes without saying that appropriate determination means such as a single switch capable of determining two positions can be employed.

The base chassis (25) is provided with a recording / reproduction discriminating switch (42). The recording / reproduction discriminating switch (42) is provided with an operation stick for discriminating the type of the optical information recording medium and an operation stick for judging whether or not the optical information recording medium can be written. When is loaded and mounted, the presence or absence of the detection hole (14) of the cartridge and the position of the slide tab (15) can be detected, and the type of the optical information recording medium, writing Whether it is possible or not is determined. Therefore, if the slide tab (15) of the cartridge (5) containing the magneto-optical disk is at the recordable position, the recording / reproduction determination switch (42)
It is determined that the optical information recording medium contained in the cartridge is a magneto-optical disk and is writable, and if the slide tab (15) is at the write-protected position, it is a magneto-optical disk but cannot be written. A signal is issued to determine this. On the other hand, since the cartridge (4) containing the CD and the CD-ROM is not provided with the detection hole (14), any operation stick of the recording / reproduction discriminating switch (42) is pushed in, and the cartridge (4) is inserted into the mounted cartridge. A signal for discriminating that the stored one is a reproduction-only CD or CD-ROM is issued. These signals are input to a control device that controls the entire device.

FIGS. 5A and 5B show a cartridge containing a magneto-optical disk, a cartridge containing a CD or a CD-ROM, and these magneto-optical disks, CDs and CDs.
1 shows a rotation driving force transmission mechanism of an optical information recording medium that can be rotationally driven on any optical information recording medium such as a D-ROM. FIG. 5A shows a state where the magneto-optical disk (6) housed in the cartridge (5) is held on the turntable (26). On the magneto-optical disk (6), an annular projection (6b) is erected around a center hole (6a), and a hub made of a hat-shaped magnetic material with a flange is provided inside the annular projection (6b). 8) is fixed. A disc-shaped recess (5a) for loosely inserting the upper end of the annular projection (6b) of the magneto-optical disk is provided on the back surface of the upper lid of the cartridge (5) for storing the magneto-optical disk. (6) The movement in the radial direction can be restricted. A turntable (26) holding the magneto-optical disk (6) is rotatably fixed to the spindle motor (20), and is constantly urged upward in the turntable (26) by a compression spring (51). Cylindrical member (52) having a conical inclined surface formed
Are slidably arranged and a turntable (2
A magnet (53) is fixed to the center of 6). Therefore, the center hole (6a) of the magneto-optical disk accommodated in the cartridge (5) is aligned by the conical inclined surface of the cylindrical member (52), and the hub (8) is attracted by the attraction force of the magnet (53). Then, the magneto-optical disk (6) is supported on the disk support surface, is held on the disk support surface by the magnetic attraction to the hub (8), and is driven by the spindle motor (2).
0) is transmitted.
The CD and the CD-ROM can be stored in a cartridge (4) having a magnetic body (54) for clamping as shown in FIG. The magnetic material for clamping (5
4) is provided on the back side of the upper lid of the cartridge (4) at a position facing the center hole (3a) of the disk so as to be movable in the vertical direction. CD and CD-ROM
The center hole (3a) of the CD or CD-ROM is aligned with the conical inclined surface of the cylindrical member (52) by the same turntable (26) as shown in FIG. The magnetic material for clamping (54) of the cartridge is attracted by the suction force, and the CD and CD-ROM are supported on the disk supporting surface. The lower surface of the magnetic material for clamping (54) and the disk supporting surface of the turntable (26) Thus, the CD and CD-ROM are pinched and held, and the rotational driving force from the spindle motor (20) is transmitted.

The operation of recording or reproducing information on or from the optical information recording medium by the optical information recording apparatus configured as described above will be described below. [Magneto-optical disk] (I) FIG. 6A shows a standby state before mounting the magneto-optical disk (6). In this state, the cartridge holder (2) is moved by the elevating mechanism to the base chassis (2).
5), the turntable (26), the optical pickup (21), the actuator (27), the objective lens (23), etc. are inserted into the cartridge (5) below the cartridge holder (2). In a position that does not interfere with When the inclined surface of the slide cam member (38) comes into contact with the cam pin (37), the inclined plate (34) is rotated clockwise, and this state is maintained. Therefore, the ridge of the inclined plate (34) abuts on the lower surface of the first arm member (24), and the first arm member (24)
Is rotated clockwise around the guide shaft (33) against the urging force of the coil spring (36), and the recording magnetic head (2) is rotated.
2) is maintained at the retracted position (see FIG. 7). In such a state, as shown in FIG. 6B, when the cartridge (5) containing the magneto-optical disk is inserted into the cartridge holder (2), the engaging pin (31) of the shutter open lever (30) is moved. ) Engages with the notch (13) of the shutter, and as the cartridge (5) is inserted into the cartridge holder (2), the shutter open lever (30) rotates about the fixed shaft (29), and Open (7) to expose both surfaces of the magneto-optical disk (6). Next, as shown in FIG. 6C, the cartridge holder (2) is lowered and the magneto-optical disk (6) is aligned with the conical inclined surface of the cylindrical member (52) of the turntable. Of the turntable (26) and the magnet (53) of the turntable (26) approach each other, and the magneto-optical disk (6) is moved by the magnetic attraction force acting between the hub (8) and the magnet (53). 26) is held by the disk support surface (see FIG. 5A). When the cartridge holder (2) is lowered, the reference hole (18) provided on the back surface of the cartridge fits with the reference pin projecting from the upper surface of the base chassis (25), and the cartridge (5) and the cartridge holder (2). Is positioned and fixed at a predetermined position by being in close contact with the base chassis (25). When the cartridge holder (2) comes into close contact with the base chassis (25), the operation rod of the recording / reproduction discriminating switch (42) provided in the base chassis is inserted into the detection hole (14) of the cartridge, and the recording / reproducing discrimination switch (42) is inserted. ) Is input to the control device,
The type of the loaded disk and the write enable / disable state are determined as described above, and the disk is determined to be a magneto-optical disk.

(II) The operation of reproducing information on the magneto-optical disk (6) loaded and mounted as described above is as follows.
This is performed as follows. As shown in FIG. 7, the slide cam member (38) moves in the direction indicated by the arrow Da, and the inclined surface of the slide cam member (38) comes into contact with the cam pin (37) to move the inclined plate (34). The first arm member (24) is rotated clockwise about the guide shaft (33) and is maintained clockwise. At this time, the lever (39) is at the position shown in FIG. 7 (b), and the rear upright piece (39c) of the lever is in the second up / down discrimination switch (41).
Is turned on by pressing the operating rod of the control button, and a signal issued from the second lifting / lowering determination switch (41) is input to the control device to determine that the recording magnetic head (22) is in the retracted position. I have. In this state, when the optical pickup (21) slides in the front-rear direction based on a reproduction command from the control device, the first arm member (24) moves through the L-shaped second arm member (35) to the guide shaft (33). The recording magnetic head (22) slides following the optical pickup (21) while being maintained at the retracted position. The laser light from the objective lens (23) is irradiated on the rotating magneto-optical disc surface by sliding the optical pickup (21) in the front-rear direction, and the reflected light is detected, whereby the magneto-optical disc ( The information recorded in 6) is reproduced.

(III) The operation of recording information on the magneto-optical disk (6) is performed as follows. A signal from the recording / reproduction discriminating switch (42) that the slide tab (15) of the cartridge is at the writable position is input to the control device, and is shown in FIG. 8 based on a recording command from the control device. As described above, when the driving source slides the lever (39) in the direction of the arrow Db, the second lifting / lowering determination switch (4
The operation rod of 1) is extended, and the second up / down discrimination switch (41)
Is in the OFF state, and the transmission of the signal is stopped. On the other hand, the slide cam member (38) connected to the lever (39) slides in the direction of the arrow Db together with the lever (39) to press the operating rod of the first lifting / lowering determination switch (40), thereby causing the first lifting / lowering operation. The discrimination switch (40) is turned on, a recording position confirmation signal is issued, and is input to the control device. At this time, the sliding of the slide cam member (38) in the direction of the arrow Db releases the contact of the inclined surface of the slide cam member (38) with the cam pin (37). Therefore, the first
Coil spring (36) acting on arm member (24)
The first arm member (24) by the counterclockwise urging force of
And the inclined plate (34) are rotated counterclockwise about the guide shaft (33), and the lower surface of the inclined plate (34) comes into contact with the upper surface of the U-shaped section (2b) of the cartridge holder. Stopped. As a result, the recording magnetic head (22) provided at the tip of the first arm member (24) approaches the recordable position of the magneto-optical disk (6), and moves downward via the magneto-optical disk (6). Is held at a position facing the objective lens (23). Based on the recording command from the control device,
When the optical pickup (21) slides back and forth, L
The first arm member (2) is inserted through the second arm member (35).
4) slides along the guide shaft (33), the recording magnetic head (22) is maintained at a recordable position, and faces the optical pickup (21) in a state where the optical pickup (2) faces the optical pickup (21).
It slides following 1). By sliding the optical pickup (21) back and forth, laser light from the objective lens (23) is irradiated on the rotating magneto-optical disk surface, and a recording signal is applied from the recording magnetic head (22). To record information on the magneto-optical disk (6).

[About CD-ROM and CD] (I) FIG. 9A shows a standby state before mounting the optical information recording medium. This state is the same as that in FIG. 6 except that the optical information recording medium (3) is a CD-ROM or a CD and the cartridge is for reproduction, and therefore the description is omitted. In such a state, as shown in FIG. 9B, when the reproduction cartridge (4) containing the CD-ROM and the CD is inserted into the cartridge holder (2), the engagement of the shutter open lever (30) occurs. Pin (3
The notch (13) of the shutter engages with 1), and as the cartridge (4) is inserted into the cartridge holder (2), the shutter open lever (30) rotates about the fixed shaft (29). Open the shutter (7) and press C
The lower surface of the information recording surface of the D-ROM or CD is exposed. Next, as shown in FIG. 9C, the cartridge holder (2) is lowered by the elevating mechanism, and the cartridge (4) is aligned with the conical inclined surface of the tubular member (52) of the turntable. ) Provided on the clamp (54) and the magnet (5) of the turntable (26).
3) approach, and the magnetic body for clamping (54) and the magnet (5)
3) CD-ROM, C
D is held by the lower surface of the magnetic body for clamping (54) and the disk support surface of the turntable (26) (FIG. 5).
(B)). When the cartridge holder (2) is lowered, the reference hole (18) provided on the back surface of the cartridge (4) is fitted to the reference pin projecting from the upper surface of the base chassis (25), and the cartridge (4) and the cartridge holder are moved. (2) is positioned and fixed at a predetermined position in close contact with the base chassis (25). Reproduction cartridge (4)
Is not provided with a detection hole (14) like the cartridge (5) of the magneto-optical disk, so that the cartridge holder (2) is provided on the base chassis (25) when the cartridge holder (2) comes into close contact with the base chassis (25). The operating rod of the recording / reproduction discriminating switch (42) is pressed by the lower surface of the cartridge (4), and a signal emitted from the recording / reproducing discrimination switch (42) is input to the control device. In the reproduction cartridge (4), a detection means (not shown) detects a media detection hole provided in the reproduction cartridge (4), and a signal is issued from the detection means and input to the control device. You. As a result, it is determined whether the optical information recording medium stored in the mounted reproduction cartridge (4) is a non-writable reproduction CD-ROM, CD, or the like, and in what format format. I do.

(II) The operation of reproducing information from the CD-ROM or CD loaded and mounted as described above is as follows.
If the cartridge is for playback and the disc is C
Except for the D-ROM and CD, the operation is the same as the reproducing operation of the magneto-optical disk shown in FIG.

The operation of ejecting a magneto-optical disk, a CD-ROM, or a CD may be performed in a manner substantially opposite to the loading / loading operation, and a description thereof will be omitted. Since the write-once optical information recording medium has a hub and is housed in a cartridge, it can be held on a turntable (26) in the same manner as a magneto-optical disk. With the recording magnetic head (22) in the retracted position, the operation may be performed in the same manner as the operation of reproducing a magneto-optical disk, the operation of reproducing a CD-ROM, and the operation of a CD.

FIGS. 10A and 10B show another embodiment of the connection structure between the L-shaped second arm member (35) and the first arm member (24). FIG. 10 (a) shows an elongated L-shaped second arm member (35) in which a long hole (35b) is provided in a vertical direction at a tip end thereof, and a yoke (24) of the first arm member (24).
The L-shaped second arm member (35) is fitted into a), and a counterclockwise urging force is applied to the first arm member (24) by the double coil spring (55). FIG. 10B shows an L-shaped second arm member (35) in which a long hole (35 b) is provided in the tip end portion in the vertical direction and a notch (35 c) is provided which is orthogonal to the sliding direction of the optical pickup. , The yoke (2) of the first arm member (24).
4a) is fitted into the notch (35c), and a counterclockwise urging force is applied to the first arm member (24) by the dual coil spring (55).

FIG. 11 shows another embodiment of the rotating means of the inclined plate (34). This is provided with a long hole (56) at a predetermined position of the inclined plate (34), and the front end of an armature (58) of a solenoid (57) provided on a lower plate of the cartridge holder (2) is provided in the long hole (56). Is now sliding.

[0027]

Since the present invention is configured as described above in detail, it has the following effects. (B) A single optical information recording device sharing a rotary drive unit, an expensive optical pickup, and the like, which is taken out of a magneto-optical disk or the like stored in a cartridge, or stored in a storage case and stored in a reproduction cartridge. CD,
It is possible to record and / or reproduce information on and from a different type of optical information recording medium such as a CD-ROM, and it is possible to provide an inexpensive and space-saving optical information recording apparatus compatible with multimedia. Therefore, it is convenient for the user. (B) According to this optical information recording apparatus, a magneto-optical disk or the like stored in a cartridge, or a CD taken out of a storage case and stored in a reproduction cartridge,
Since recording or reproduction is performed on an optical information recording medium such as a CD-ROM or the like, it is only necessary to open a shutter at the time of recording or reproduction to expose a minimum necessary portion. Unnecessary adhesion of dust to the surface of the optical information recording medium due to dust existing in the optical information recording device or dust introduced from outside the device can be prevented. In addition, foreign matter in the optical information recording device hardly adheres to or comes into contact with the surface of the optical information recording medium. For this reason, it is possible to prevent recording failure and reproduction failure of information. (C) According to the optical information recording apparatus of claim 1,
A recording magnetic head is provided at the tip, and the recording magnetic head is rotatable between a recordable position facing the objective lens provided on the optical pickup and a retracted position away from the objective lens, and has the same structure as the optical pickup. Such as a first arm member slidable in the direction, a rotating means of the first arm member, and a connecting means for sliding the first arm member following the sliding of the optical pickup in the front-rear direction. In addition, since a structure that can be miniaturized is employed, a compact and lightweight optical information recording device can be manufactured at low cost. (D) According to the structure of the third to fifth aspects, it is easy to assemble, there are few failures, and it is easy to disassemble, so that repair can be easily performed. (E) According to the sixth aspect, the type of the optical information recording medium and whether or not the optical information recording medium can be written can be automatically determined by mounting the cartridge on the optical information recording apparatus. Errors in the reproduction operation can be eliminated.

[Brief description of the drawings]

FIG. 1 is a perspective view of an optical information recording apparatus according to an embodiment of the present invention.

FIG. 2 is a perspective view of a cartridge containing a hub-equipped disk such as a magneto-optical disk capable of recording and reproduction;
(A) is a perspective view from the front side, and (b) is a perspective view from the back side.

FIGS. 3A and 3B are perspective views of a cartridge storing a read-only disk such as a CD-ROM and a CD. FIG. 3A is a perspective view from the front side, and FIG. 3B is a perspective view from the back side.

FIG. 4 is a partially cutaway perspective view of a main part of a loading mechanism of a cartridge holder and a control mechanism of a recording magnetic head of the optical information recording apparatus.

5A and 5B are cross-sectional views showing a state in which a disk housed in a cartridge is mounted on a rotational force transmission mechanism. FIG. 5A is a state in which a magneto-optical disk with a hub is mounted, and FIG.
The ROM and the CD are mounted.

FIGS. 6A and 6B are views for explaining the loading / mounting operation of the magneto-optical disk, wherein FIG. 6A shows the state before the cartridge is inserted into the cartridge holder, FIG. 6B shows the state when the cartridge is inserted, and FIG.
Indicates that the mounting of the cartridge is completed.

FIGS. 7A and 7B show a state during loading or reproduction of a magneto-optical disk, wherein FIG. 7A is a perspective view, FIG.
(C) is a side view.

FIG. 8 shows a recording state of a magneto-optical disk, and FIG.
Is a perspective view, (b) is a plan view, and (c) is a side view.

FIGS. 9A and 9B are explanatory diagrams of loading / loading operations of a CD-ROM and a CD, wherein FIG. 9A shows a state before a cartridge is inserted into a cartridge holder, and FIG.
(C) shows the time when the mounting of the cartridge is completed.

FIG. 10 is an exploded perspective partial view of another embodiment of the connection structure between the L-shaped second arm member and the first arm member.

FIG. 11 is a side view of another embodiment of the rotating means of the inclined plate.

FIG. 12 is an explanatory diagram of a recording / reproducing method for an optical information recording medium.

[Explanation of symbols]

 A optical information recording device 2 cartridge holder 4, 5 cartridge 21 optical pickup 22 recording magnetic head 24 first arm member 33 guide shaft 34 inclined plate 35 second arm member 38 slide cam member 39 lever

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G11B 11/105

Claims (5)

(57) [Claims] 1. An optical information recording apparatus for recording information by irradiating a disk-shaped optical information recording medium contained in a cartridge with a light beam, comprising: (A) a means for rotating the optical information recording medium (B) a cartridge holder; (C) an optical pickup located below the cartridge holder and slidable in the front-rear direction; and (D) a recording magnetic head having a recording magnetic head at a distal end portion thereof. A first arm member rotatable to a recordable position facing the objective lens provided on the optical pickup and a retracted position away from the objective lens, and slidable in the same direction as the optical pickup; comprising a rotating means of the first arm member, and a connecting means for sliding the first arm member to follow the slide in the front-rear direction of the (F) optical pickup, the first a Rotating means of arm members, the cartridge holder
Use the guide shaft provided as a rotation support shaft and at least light
First arm having a length greater than the sliding distance of the dynamic pickup
And a guide shaft.
An optical information recording device, comprising: a rotating mechanism for rotating the heart . 2. The optical information recording apparatus according to claim 1,
Rotating mechanism reciprocates back and forth by the drive source.
The slide cam member fixed to the lever
A slide cam portion protruding from a position eccentric from the rotation support shaft
The material contact cam pin and the first arm member in the counterclockwise direction.
It consists of a holding spring that urges when
The slide cam member abuts the cam pin by the forward movement of
By doing so, the inclined member is rotated about the guide shaft.
The first arm member is retracted against the urging force of the holding spring.
The lever in the backward direction by the drive source.
Release the contact of the slide cam member with the cam pin and hold down
The first arm member is tilted to the recordable position by the biasing force of the spring.
An optical information recording device, characterized in that it is rotated together with an oblique member . 3. An optical information recording apparatus according to claim 2,
And the slide cam member is a cam provided on the inclined member.
A plane with a slope that the tip of the pin abuts and slides on
It has a triangular wedge shape.
Provide a ridge with a length greater than the sliding distance of the backup
And the lower surface of the first arm member is in line contact with the ridge portion.
Supported by the forward movement of the lever by the drive source.
Through a cam pin that contacts the inclined surface of the slide cam member.
The guide shaft against the biasing force of the holding spring.
Pivoted about the center to pivot the first arm member to the retracted position.
Optical information recording apparatus characterized Rukoto. 4. The optical information according to claim 1, 2 or 3.
In the recording device, the cartridge holder is moved to the eject position by the lifting mechanism.
And the loading position can be moved up and down while maintaining a horizontal state.
L-shaped second from the lower side of the optical pickup in the horizontal direction.
The L-shaped second arm member has an optical pickup protruding therefrom.
At least along the optical axis of the
Cross-shaped cuts at a depth greater than the
And the same direction as the sliding direction of the optical pickup.
The notch in the direction is the escape for the guide shaft,
The cut in the direction perpendicular to the sliding direction is a relief for the holding spring.
And the base end of the first arm member and the L-shaped
A link connecting the tip of the two-arm member via a guide shaft
An optical information recording device as a binding means . 5. An optical information recording medium type discriminating means and light
A means for determining whether or not to write on the scientific information recording medium;
The recordable position of the recording magnetic head at the tip of the arm member and
The position change with the retreat position is performed by changing the type of the optical information recording medium.
Control based on signals from the class discrimination means and the write permission / prohibition discrimination means.
2. The method according to claim 1, wherein
The optical information recording apparatus according to claim 4 .