JP2007087445A - Cartridge for photosensitive recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a photosensitive recording medium cartridge capable of positioning a photosensitive recording medium by a simple positioning structure. <P>SOLUTION: The cartridge 2 for storing a photosensitive recording disk 4 is provided with a cartridge body 11 having inner apertures 18, 19 for exposing a part of the recording medium 4, a light shielding plate 12 attached to the outside of the cartridge body 11 and having external apertures 14, 15 opposed to the inner apertures 18, 19, and a shutter 13 arranged between the cartridge body 11 and the light shielding plate 12. Further, a positioning step part 60 to be positioned on a prescribed position by engaging with a positioning pin arranged on the front side in a loading direction to the recording medium is formed on the cartridge 2. The positioning step part 60 is constituted of a side direction positioning step part 60a for positioning the recording disk 4 in a direction orthogonal to the loading direction to the recording apparatus and a loading direction positioning step part 60b for positioning the recording disk 4 in the loading direction to the recording apparatus. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a photosensitive recording medium cartridge that accommodates a photosensitive recording medium, and more particularly to improved positioning with respect to a recording apparatus.

  A hologram recording medium for recording data by hologram has been invented. (For example, refer to Patent Document 1) This hologram recording medium is a photosensitive recording medium in which a hologram recording layer made of a photosensitive material is provided on a disk-shaped support, and data is used as interference fringes of laser light. By performing multilayer recording, it is possible to obtain a larger data recording capacity than that of a DVD that is a photosensitive recording medium that has been widely used. This hologram recording medium is handled by being housed in a cartridge having a light-shielding function and a dust-proof function because the performance of the hologram recording layer is adversely affected by exposure of the hologram recording layer or adhesion of dust. (For example, see Patent Document 2)

  When this type of cartridge is loaded into the recording apparatus, the disk is supported by the turntable of the recording apparatus, and the recording surface is rotated by an optical pickup that moves in the radial direction while the turntable is rotated by the spindle. Writing to and reading from are performed.

  As a cartridge positioning mechanism in the recording apparatus, a tray for drawing the cartridge into the apparatus housing is supported by the fixed chassis, a holder for fitting the cartridge to the positioning pin is supported by the floating chassis, and the positioning member of the holder is attached to the fixed chassis. It is known that a cartridge is pushed into a holder by a tray and the holder is lowered to position the cartridge at a predetermined position with respect to the turntable (see, for example, Patent Document 3).

JP 2004-029476 A JP 2003-317422 A JP-A-6-302082

By the way, in the conventional cartridge, as a disk positioning mechanism at the time of recording / reproducing, a mechanism having a complicated structure having a plurality of members must be provided in the recording apparatus. It was easy to occur.
For this reason, in recent years, a cartridge capable of positioning with a simple positioning structure has been demanded in order to reduce the cost of the apparatus.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a photosensitive recording medium cartridge capable of positioning with a simple positioning structure.

  In order to achieve the above object, a photosensitive recording medium cartridge of the present invention comprises a cartridge main body that rotatably accommodates a disc-shaped photosensitive recording medium, and the photosensitive member provided in the cartridge main body. An opening for exposing the recording medium to the outside, and a shutter attached to the cartridge body so as to be movable between a closed position for closing the opening and an open position for opening the opening, and positioned to the recording apparatus A cartridge that is loaded and reads / writes on the photosensitive recording medium with the shutter opened, and is engaged with a positioning pin arranged on the front side in the loading direction of the recording apparatus and positioned at a predetermined position. And a positioning step portion.

  The photosensitive recording medium cartridge of the present invention has a simple structure in which the positioning pin is positioned by being brought into contact with and engaged with the positioning step portion, so that a complicated positioning structure can be dispensed with. That is, positioning can be performed with a simple positioning structure, and the cost of the recording apparatus can be reduced and the occurrence of failures can be reduced.

  In the photosensitive recording medium cartridge, the positioning step portion engages with the positioning pin to perform positioning in a direction perpendicular to the loading direction of the recording device, and to the recording device. It is preferable to have a loading direction positioning step for positioning in the loading direction. In this way, the cartridge can be reliably positioned in both the direction orthogonal to the loading direction and the loading direction by the lateral positioning step and the loading direction positioning step, and the positioning accuracy can be improved.

  In the photosensitive recording medium cartridge, it is preferable that the side positioning step portion is a step portion formed in an arc shape along a peripheral edge of the photosensitive recording medium. In this way, the cartridge can be reliably positioned in the direction orthogonal to the loading direction by engaging the arc-shaped step portion with the positioning pin.

  In the photosensitive recording medium cartridge, it is preferable that the lateral positioning stepped portion is formed of a V-shaped stepped portion that is narrowed rearward in the loading direction of the photosensitive recording medium. By doing so, the cartridge can be reliably positioned in the direction orthogonal to the loading direction by engaging the V-shaped stepped portion with the positioning pin.

  In the photosensitive recording medium cartridge, it is preferable that the loading direction positioning step is a step formed in a straight line along a direction perpendicular to the loading direction to the photosensitive recording medium. In this case, the cartridge can be reliably positioned in the direction orthogonal to the loading direction by engaging the linear step portion with the positioning pin.

  The photosensitive recording medium cartridge is attached to the outside of the cartridge main body and has an opening hole facing the opening formed in the cartridge main body and exposing the center and recording surface of the photosensitive recording medium to the outside. It is preferable to have a shading plate having the same. In this way, the inside of the cartridge body can be more reliably shielded from light by the light shielding plate, and dust can be prevented from entering more reliably.

  In the photosensitive recording medium cartridge, the photosensitive recording medium is preferably a hologram recording medium. That is, since the cartridge is excellent in light shielding properties, it is suitable for housing a recording medium made of a hologram recording medium.

  In the photosensitive recording medium cartridge, the inner surface of the cartridge main body and the outer surface of the shutter of the cartridge main body are subjected to mat processing or embossing with a surface roughness Ra of 5 to 20 μm. It is preferable. In this case, even when light enters the inside of the cartridge or between the cartridge main body and the shutter, the light can be diffused and attenuated by the rough surface, so that the influence on the photosensitive recording medium can be reduced.

  The photosensitive recording medium cartridge includes a first shell having a substantially plate shape and a second shell that is overlapped and welded to the first shell, and the first shell and the second shell are: Other parts formed of the same or similar thermoplastic and including the shutter are preferably formed of a material different from that of the first shell and the second shell. Thereby, it can prevent that the 1st shell, the 2nd shell, and other components will weld at the time of welding with the 1st shell and the 2nd shell.

  In the photosensitive recording medium cartridge, it is preferable that the first shell and the second shell and the shutter have 0.01 to 5.00% by weight of a light-shielding substance added to plastic used for molding. In this way, the light transmittance between the cartridge main body and the shutter can be reduced, and the light shielding performance of the cartridge can be improved.

  In the photosensitive recording medium cartridge, the first shell, the second shell, and the shutter are preferably added with 0.01 to 2.00% by weight of carbon black in plastic used for molding. In this way, the light transmittance between the cartridge main body and the shutter can be reduced, and the light shielding performance of the cartridge can be improved.

  In the photosensitive recording medium cartridge, the first shell, the second shell, and the shutter are preferably added with 0.1 to 5.0% by weight of a silicone lubricant in the plastic used for molding. By doing so, the operation of the shutter becomes smooth, so that it is possible to prevent generation of shavings or the like due to friction between the shutter and the cartridge body.

  According to the present invention, since the positioning pin is positioned simply by being brought into contact with and engaged with the positioning step portion, a complicated positioning structure can be eliminated. That is, positioning can be performed with a simple positioning structure, and the cost of the recording apparatus can be reduced and the occurrence of failures can be reduced.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 3 are perspective views showing the external shape of a hologram recording medium cartridge (hereinafter abbreviated as a cartridge) according to an embodiment of the present invention. FIG. 1 is a perspective view showing a state in which one surface of the cartridge is upward, FIG. 2 is a perspective view showing a state in which the opposite surface is upward, and FIG. 1 is a perspective view showing a state in which a disc-shaped hologram recording medium (hereinafter referred to as a recording disk) is rotatably accommodated. FIG.

  As shown in FIG. 1, the cartridge 2 is loaded from the direction of arrow A to a hologram recording apparatus or the like that handles the cartridge. Positioning grooves 7 and 8 into which positioning members provided in each device are inserted when the cartridge 2 is loaded in various devices such as a hologram recording device are provided on both side surfaces of the front end of the cartridge 2 in the loading direction. Yes.

  The recording disk 4 is a hologram recording disk having a disk shape with a hole in the center, and hologram recording layers are provided on both sides. In this hologram recording layer, for example, data is recorded in a multi-layered manner as interference fringes of laser light by laser light in the wavelength range of green 532 nm to blue 405 nm. A reinforcing material may be added to the hole of the recording disk 4. As shown in FIG. 2, the cartridge 2 is set in the hologram recording apparatus with either the A surface 2a or the B surface 2b facing upward in order to perform recording on both recording surfaces of the recording disk 4.

  The cartridge 2 includes a cartridge main body 11 provided with a disk housing portion 3, a light shielding plate 12 attached so as to sandwich the outside of the cartridge main body 11, and a shutter 13 incorporated between the cartridge main body 11 and the light shielding plate 12. And. On the upper and lower surfaces of the light shielding plate 12, substantially rectangular external openings 14 and 15 as second openings (opening holes) are formed. These external openings 14 and 15 are closed by the first shutter plate 55a and the second shutter plate 55b when the shutter 13 is in the closed position.

  As shown in FIG. 3, when the shutter 13 moves toward the opening position in the direction of arrow B, the same shape provided in the cartridge main body 11 so as to face the external openings 14 and 15 together with the external openings 14 and 15. The internal openings 18, 19 are opened. Thereby, the central part 4a of the recording disk 4 accommodated in the disk accommodating part 3 and the recording surface 4b are exposed to the outside.

  The shutter 13 is urged to the closed position by a built-in shutter spring, and is locked at the closed position by a lock mechanism. To release the lock mechanism, the second lock member 64 protruding into the positioning groove 7 is pushed into the cartridge 2, and in this state, it is exposed from the openings 73 and 72 of the A surface 2a and the B surface 2b. The first lock member 63 is slid to the rear end side in the cartridge loading direction. Thus, since the shutter 13 is locked at the closed position by the lock mechanism that cannot be released unless a two-step operation is performed, the shutter 13 is not inadvertently opened.

  4 is an exploded perspective view showing the configuration of the cartridge 2, FIG. 5A is a sectional view in the loading direction of the cartridge, FIG. 4B is a partially enlarged view of FIG. It is a partial enlarged view.

  As shown in FIG. 4, the cartridge body 11 includes a substantially plate-like first shell 25, a second shell 26 joined to the first shell 25, and the first shell 25 and the second shell 26. The lock mechanism 27 is incorporated and locks the shutter 13.

  The first shell 25 and the second shell 26 are formed by injection molding using, for example, the same or similar thermoplastic plastic to which a light shielding material and a lubricant are added. As shown in FIG. 5C, which is an enlarged cross-sectional view of the edge of the cartridge 2, the inner surface of the first shell 25 is a protrusion formed with a diameter larger than the outer diameter of the recording disk 4. A first light shielding wall 30, a second light shielding wall 31 provided on the outside of the first light shielding wall 30, and a protrusion 32 provided on the entire periphery of the edge are provided. Inside the first light shielding wall 30, an internal opening 18 is provided to expose the central portion 4a of the recording disk 4 and the recording surface 4b to the outside.

  On the inner surface of the second shell 26 is a protrusion formed with a diameter larger than the outer diameter of the recording disk 4, and between the first light shielding wall 30 and the second light shielding wall 31 of the first shell 25. A third light shielding wall 35 to be inserted and a protrusion 36 provided on the entire periphery of the edge are provided. Inside the third light shielding wall 35, an internal opening 19 is provided to expose the central portion 4a of the recording disk 4 and the recording surface 4b to the outside.

  When the recording disk 4 is placed inside the third light shielding wall 35 of the second shell 26 and the first shell 25 is superposed on the upper surface of the second shell 26, the third light shielding wall 35 is connected to the first light shielding wall 30. Inserted between the second light shielding wall 31 and the tip of the third light shielding wall 35 abuts against the inner surface 25 d of the first shell 25. The disk housing portion 3 is formed by these light shielding walls 30, 31, 35 and the inner surfaces of the first shell 25 and the second shell 26. The side wall of the disk housing part 3 has a labyrinth-like light shielding structure formed by three light shielding walls 30, 31, and 35 intertwined. Therefore, even if light or dust enters from the joint of the first shell 25 and the second shell 26, they do not enter the disk housing portion 3.

  The tip of the third light shielding wall 35 of the second shell 26 is fixed to the inner surface 25d of the first shell 25 by ultrasonic welding. Thereby, since the 1st shell 25 and the 2nd shell 26 are joined firmly, a gap does not open at the joint of both.

  As shown in FIG. 5A, the outer surfaces of the first shell 25 and the second shell 26 are formed with light shielding plate mounting surfaces 25a and 26a offset slightly inward from the shape of the light shielding plate 12. Yes.

  As the material of the light shielding plate 12, for example, an aluminum alloy is used as a material that can obtain light shielding properties, corrosion resistance, decorative properties, and workability, and is lightweight and strong. The light shielding plate 12 may be made of plastic. However, in order to ensure the light shielding property and the slipperiness of the shutter 13, a plastic to which a light shielding material and a lubricant are added may be used. As shown in FIG. 4, the light-shielding plate 12 is formed of an aluminum alloy thin plate with external openings 14 and 15 and a notch 40 for obtaining a moving range of the shutter 13 so that the cross section is substantially U-shaped. It is bent. Accordingly, the light shielding plate 12 includes the first plate portion 12a and the second plate portion 12b each having the external openings 14 and 15, and the cutout 40, and the first plate portion 12a and the second plate portion 12b. And a third plate portion 12c that is connected to each other.

  The light shielding plate 12 sandwiches the B surface 2b and the A surface 2a of the cartridge body 11 with the first plate portion 12a and the second plate portion 12b, and the third plate portion 12c in the loading direction C of the cartridge body 11 It is attached to the light shielding plate attachment surfaces 25a and 26a of the cartridge body 11 so as to cover the tip. Since the light shielding plate mounting surfaces 25 a and 26 a are offset inward at a depth greater than the thickness of the light shielding plate 12, the outer surface of the light shielding plate 12 attached to the cartridge body 11 does not protrude from the surface of the cartridge 2. Absent.

  As shown in FIG. 4, small holes 49 are formed at substantially equal intervals on the outer periphery of the first plate portion 12 a and the second plate portion 12 b of the light shielding plate 12. Further, pins 50 slightly longer than the thickness of the light shielding plate 12 are integrally formed on the light shielding plate mounting surfaces 25 a and 26 a of the first shell 25 and the second shell 26 at positions corresponding to the holes 49 of the light shielding plate 12. Has been.

  When the light shielding plate 12 is attached to the outside of the cartridge body 11 (light shielding plate attachment surfaces 25a, 26a), the pins 50 of the first shell 25 and the second shell 26 are inserted into the holes 49 and protrude from the surface of the light shielding plate 12. The

  In addition, as a method for fixing the light shielding plate 12 to the cartridge body 11, an adhesive, a double-sided tape, screwing, or the like can be used. Further, when the light shielding plate 12 is made of plastic, various types of welding can be used.

  As shown in FIG. 4, the shutter 13 includes a shutter member 55 obtained by bending a light-shielding thin plate so as to be substantially U-shaped, and an elongated plate-like slide member 56 attached to the shutter member 55. . The shutter member 55 is formed of, for example, an aluminum alloy for the same reason as the light shielding plate 12. The shutter member 55 may also be formed of plastic, but it is also preferable to use plastic to which a light-shielding substance and a lubricant are added in order to ensure light-shielding properties and sliding properties. The slide member 56 is formed of a plastic to which a light shielding material and a lubricant are added.

  The shutter member 55 includes a first shutter plate 55 a that is inserted between the outer surface of the first shell 25 and the first plate portion 12 a of the light shielding plate 12, and the outer surface of the second shell 26 and the second light shielding plate 12. The second shutter plate 55b inserted between the plate portion 12b, the first shutter plate 55a and the second shutter plate 55b are connected to each other, and the connecting portion 55c to which the slide member 56 is attached is provided. Yes.

  On the outer surfaces of the first shell 25 and the second shell 26, shutter sliding surfaces 25b and 26b are formed on the inner side of the light shielding plate mounting surfaces 25a and 26a and offset inward at a depth greater than the thickness of the shutter member 55. Has been. Thereby, since the shutter 13 can move smoothly between the cartridge body 11 and the light shielding plate 12, generation of chips and the like due to the movement can be suppressed. The shutter sliding surfaces 25b and 26b may be roughened in order to diffuse incident light. Similarly, the inner surface of the light shielding plate 12 and the inner and outer surfaces of the shutter 13 may be roughened.

  The slide member 56 is slidably incorporated between the first shell 25 and the second shell 26 so that the upper surface is exposed from the front end surface of the cartridge body 11 in the loading direction. An attachment surface 56 a that is attached to the inner surface of the continuous portion 55 c of the shutter member 55 is provided at the upper end portion of the slide member 56. For example, two pins 56b are integrally formed on the mounting surface 56a, and are inserted into the two holes 55d provided in the connecting portion 55c, and the tip is crushed by heat, whereby the shutter member 55 and The slide member 56 is fixed. Note that an adhesive, a double-sided tape, or the like may be used for this fixing, and various welding may be used when the shutter member 55 is formed of plastic. Further, screwing may be used.

  As shown in FIG. 5B, a groove 56c is formed on the side surface of the slide member 56 along the longitudinal direction. The protrusions 25c and 26c provided on the inner surfaces of the first shell 25 and the second shell 26 on the front end side in the loading direction are inserted into the groove 56c. By the groove 56c and the protrusions 25c and 26c, the slide member 56 can be slid without being detached from the cartridge main body 11.

  On the other upper surface end portion of the slide member 56, an operated portion 56d that is operated when the shutter 13 is opened is integrally formed. The operated portion 56d is exposed to the shutter member 55 without being hidden by the third plate portion 12c of the light shielding plate 12 by providing the slide member 56 so as to extend in the shutter closing direction. . The cutout 40 in the third plate portion 12c of the light shielding plate 12 is provided to avoid interference with the operated portion 56d when the shutter 13 is moved to the open position (see FIG. 3).

  The shutter 13 is urged in the closing direction by a shutter spring 59. The shutter spring 59 is formed of, for example, a torsion coil spring, and both ends thereof are locked to the slide member 56 and the inner surface of the first shell 25.

Positioning step portions 60 are respectively formed on the A surface 2a side and the B surface 2b side of the cartridge 2 having the above structure.
The positioning step portion 60 is formed by reducing the thickness of the cartridge body 11 and the light shielding plate 12 on the front side in the loading direction on the front side in the loading direction with respect to the hologram recording apparatus.

The positioning step portion 60 includes a side positioning step portion 60a formed in an arc shape along the periphery of the recording disk 4 in a plan view, and a loading direction positioning step formed linearly along a direction orthogonal to the loading direction. Part 60b.
When the cartridge 2 is loaded into the hologram recording apparatus, positioning pins 81a and 81b, which will be described later, provided on the apparatus side have side positioning step portions 60a that constitute the positioning step portion 60 and loading direction positioning step portions. The positioning is performed by engaging with 60b and being disposed at the corners of the lateral positioning step 60a and the loading direction positioning step 60b.

  Next, the cartridge locking mechanism will be described with reference to FIGS. 6 is an exploded perspective view showing the configuration of the lock mechanism, FIG. 7 is an operation explanatory view of the lock mechanism shown in FIG. 6, and FIG. 8 is an explanatory view showing an example of various mechanisms for opening the shutter.

  As shown in FIG. 6, the slide member 56 is formed with a rectangular hole-shaped locked groove 56e adjacent to the operated portion 56d. As shown in FIG. 7A, the outer side surface of the locked groove 56e in the longitudinal direction of the slide member 56 gradually becomes the other end side (operated portion 56d) of the slide member 56 toward the front in the loading direction C of the cartridge 2. An engagement inclined surface 56f that is inclined in the direction) is formed. Further, a corner portion between the right end surface and the lower surface of the slide member 56 in the drawing is chamfered substantially parallel to the engagement inclined surface 56f to form a guide inclined surface 56g.

  As shown in FIG. 6, the lock mechanism 27 includes a first lock member 63 that locks the shutter 13 in the closed position, a second lock member 64 that locks the movement of the first lock member 63, and a second lock member 63. The lock member 64 includes a lock spring 65 that urges the lock member 64 in the counterclockwise direction and upward in the drawing.

  The first lock member 63 includes a lock claw 63a that engages with a locked groove 56e formed in the slide member 56 and locks the shutter 13 in the closed position, and a rectangular slide integrally provided with the lock claw 63a. The moving part 63b, a cylindrical boss 63c formed on the surface of the sliding part 63b with respect to the second shell 26, and an operation hole 63d formed through the boss 63c and the sliding part 63b. .

  In the lock claw 63a, a slope 63e for inviting engagement with the locked groove 56e when the shutter 13 moves from the open position to the close position is formed substantially parallel to the engagement inclined surface 56f of the slide member 56. Has been. Further, on the right side of the lock claw 63a in the drawing, a hook portion 63f that is an inclined surface substantially parallel to the engaging inclined surface 56f of the locked groove 56e is formed, and the slide member 56 is opened in the direction of arrow B in which the shutter 13 opens. The hook portion 63f engages with the engagement inclined surface 56f to reliably prevent the movement.

  The second lock member 64 is provided integrally with the link portion 64b having a hole 64a that is rotatably inserted into the outer periphery of the boss 63c of the first lock member 63, and the boss 63c. The rotation part 64c rotates to the center, the pressed piece 64d erected vertically from the side surface of the rotation part 64c, and the spring locking part 64e to which one end of the lock spring 65 is locked.

  As shown in FIG. 7A, the first lock member 63 has a first lock position where the hook portion 63f of the lock claw 63a engages with the engagement inclined surface 56f of the locked groove 56e of the slide member 56. As shown in (C) of the same figure, it is moved between a first release position that slides downward and releases the engagement with the locked groove 56e.

  7A, the right end portion of the hook portion 63f of the lock claw 63a and the left end portion of the engagement inclined surface 56f of the locked groove 56e are on the same vertical line, or It is arranged with a slight gap in the horizontal direction. In other words, in this state, the hook portion 63f and the engagement inclined surface 56f are not engaged, and the first lock member 63 is movable downward.

  However, when the slide member 56 slightly moves toward the center of the cartridge body 11, the engagement inclined surface 56f is reliably engaged with the hook portion 63f to prevent the slide member 56 from moving. When the slide member 56 moves in the center direction of the cartridge main body 11, the shutter 13 also moves in the opening direction. However, the moving distance until the engagement inclined surface 56f engages with the hook portion 63f is the internal opening 18,19. The amount of overlap between the cartridge main body 11 and the shutter 13 in the periphery is much smaller and the internal openings 18 and 19 are not opened.

  As shown in FIG. 2A, the second lock member 64 is biased by the lock spring 65 to be in a vertical state, and the second lock member 64 projects the pressed piece 64d from the notch 67 in the positioning groove 7. As shown in FIG. 5B, the second movable position is moved between the second release position that rotates clockwise in the drawing.

  On the inner surface of the first shell 25, a rectangular sliding frame 69 into which the sliding portion 63b of the first locking member 63 is slidably inserted in the vertical direction, and a rotating portion 64c of the second locking member 64 are provided. And a boss 71 to which the other end of the lock spring 65 is locked is formed. Yes. The sliding frame 69 is formed with an opening 72 that exposes the operation hole 63 d of the first lock member 63 from the outer surface of the first shell 25 to the outside. Similarly, the second shell 26 is formed with an opening 73 that exposes the operation hole 63 d to the outside at a position facing the opening 72.

  FIG. 7A shows the state of the lock mechanism 27 of the cartridge 2 when not in use. Since the second lock member 64 is biased upward by the lock spring 65, the lock claw 63 a of the first lock member 63 enters the locked groove 56 e of the slide member 56. Accordingly, when the shutter 13 is slid from the closed position to the open position, the engagement inclined surface 56f of the locked groove 56e and the hook portion 63f of the lock claw 63a are not engaged and the shutter 13 does not slide. . The inclination direction of the engagement inclined surface 56f and the hook portion 63f is shaped to further bite when the slide member 56 moves in the direction to open the shutter 13, and thus the movement of the slide member 56 is reliably prevented.

  Further, even if an attempt is made to insert a rod or the like into the operation hole 63d of the first lock member 63 through the openings 72 and 73 provided in the first shell 25 and the second shell 26, the second lock member 64 is slid. Since the bottom surface of the abutment comes into contact with the regulating piece 70, the lock is not released.

  As shown in FIG. 8, in the hologram recording apparatus used with the cartridge 2 loaded, for example, a pair of positioning members 77a and 77b, a lock release mechanism 78 for operating the first lock member 63, and a shutter. A shutter slide mechanism 80 that slides 13 between an open position and a closed position is incorporated. The pair of positioning members 77a and 77b engage with the positioning grooves 7 and 8 on both side surfaces of the loaded cartridge 2 to position the cartridge 2 in the insertion direction of the cartridge 2 and in a direction perpendicular to the insertion direction.

  The lock release mechanism 78 slides the engagement pin 79a inserted into the operation hole 63d of the first lock member 63 from the opening 73 of the cartridge 2 and the engagement pin 79a in the unlocking direction of the first lock member 63. And a slide mechanism. Since the recording disk 4 can record on both sides, the cartridge 2 is set in the apparatus with either the A side 2a or the B side 2b facing upward. The position of the mechanism 27 is reversed left and right. Therefore, the lock release mechanism 78 includes an engagement pin 79b for reverse loading so that the cartridge 2 can be engaged with the operation hole 63d even when the cartridge 2 is reversed and loaded. The engaging pins 79a and 79b are simultaneously moved in the direction of the arrow. Note that when one engagement pin is engaged with the operation hole 63d, the other engagement pin becomes an obstacle, and therefore the engagement pins 79a and 79b are retracted when contacting the cartridge 2. It is good to.

  The shutter slide mechanism 80 includes an operation piece 80 a that contacts the outside of the operated portion 56 d of the slide member 56 and a slide mechanism that slides the operation piece 80 a in the sliding direction of the shutter 13. The shutter slide mechanism 80 also includes another operation piece 80b to cope with the reverse insertion of the cartridge 2, and the operation pieces 80a and 80b are simultaneously moved in the direction of the arrow.

  When the cartridge 2 is loaded in the hologram recording apparatus, the positioning member 77a is inserted into the positioning groove 7 as shown in FIG. Further, an engagement pin 79a of the lock release mechanism 78 provided in the apparatus is inserted into the operation hole 63d of the first lock member 63, and the operation piece 80a of the shutter slide mechanism 80 is operated by the operated portion 56d of the slide member 56. It is arranged outside. The positioning member 77 a presses the pressed piece 64 d of the second lock member 64 against the urging force of the lock spring 65. The second lock member 64 rotates clockwise around the link portion 64b, and the bottom surface of the rotation portion 64c is separated from the restricting piece 70, so that the first lock member 63 can be slid downward. Become.

  As shown in FIG. 5C, the lock release mechanism 78 slides the engagement pin 79a in the release direction, and removes the lock claw 63a from the locked groove 56e to release the engagement. Thereafter, the shutter 13 is opened by the shutter slide mechanism 80 sliding the operation piece 80a in the leftward opening direction in the figure. Thus, since the lock mechanism 27 is not released unless the second lock member 64 is rotated and the first lock member 63 is further slid, the shutter 13 is effectively prevented from being inadvertently opened. Can be prevented.

Further, the hologram recording apparatus is provided with a pair of positioning pins 81a and 81b, and the positioning of the cartridge 2 is performed more accurately by these positioning pins 81a and 81b. Here, a specific positioning method using the positioning pins 81a and 81b will be described.
FIG. 9 is a schematic configuration diagram of the recording apparatus for explaining the positioning of the cartridge in the recording apparatus, and FIG. 10 is a view taken along the line XX in FIG.
As shown in FIG. 9, when the cartridge 2 is inserted into the loading port 82 of the recording device 86, the tip portions of the pair of positioning pins 81 a and 81 b abut on the lower surface side on the front side in the loading direction of the cartridge 2.

  When the cartridge 2 is further inserted, the positioning pins 81a and 81b come into contact with the side positioning step 60a or the loading direction positioning step 60b constituting the positioning step 60, and finally, as shown in FIG. In addition, the positioning pins 81a and 81b are arranged at the corners including the side positioning step portion 60a and the loading direction positioning step portion 60b, and both the side positioning step portion 60a and the loading direction positioning step portion 60b. Abut and engage. Thereby, the cartridge 2 is positioned with high accuracy in the recording device 86.

  Thereafter, as shown in FIG. 9, when the turntable 84 of the spindle motor 83 supports the central portion 4a of the recording disk 4, the recording disk 4 is rotated by the spindle motor 83 in response to a command from a control unit (not shown). The optical pickup 85 moving in the radial direction on the lower surface side of 4 performs writing and reading on the recording surface 4 b of the recording disk 4.

As described above, as shown in FIG. 11, if the structure is such that the pair of positioning pins 81a and 81b are positioned in contact with the positioning step portion 60 formed on the front side in the loading direction of the cartridge 2, as shown in FIG. When the single disk 4 is loaded, the recording disk 4 can be positioned by the same positioning pins 81a and 81b.
That is, when a single recording disk 4 is loaded from the loading port 82, the peripheral edge of the recording disk 4 comes into contact with the positioning pins 81a and 81b that protrude upward from the positioning of the cartridge 2, and as shown in FIG. Positioning pins 81a and 81b position the recording disk 4 in the horizontal direction, and the center 4a of the recording disk 4 is reliably supported by the turntable 84.

Since the cartridge 2 having the positioning step portion 60 as described above has a simple structure in which the pair of positioning pins 81a and 81b are positioned by being brought into contact with and engaged with the positioning step portion 60, it is complicated. A simple positioning structure can be dispensed with.
That is, the cartridge 2 can be positioned with a simple positioning structure, and the cost of the recording apparatus 86 can be reduced and the occurrence of failure can be reduced.

The shape of the positioning step formed on the cartridge 2 is not limited to the above example.
FIG. 13 shows a positioning step having another shape. As shown in the figure, the positioning step 90 is formed in a rectangular shape including a side positioning step 90a formed in a V shape that squeezes rearward in the loading direction, and a linear portion orthogonal to the loading direction. Each of the positioning pins 81a and 81b can be engaged with the side positioning step 90a and the loading direction positioning step 90b.

  In the cartridge 2 having the positioning step 90, the positioning of the cartridge 2 to the side is performed by the one positioning pin 81a contacting and engaging with the V-shaped side positioning step 90a. The other positioning pin 81b contacts and engages with the rectangular loading direction positioning step 90b, whereby the cartridge 2 is positioned in the loading direction.

  Various materials can be added as a light shielding material to be added to the plastic forming the first shell 25 and the second shell 26 of the cartridge 2. It is preferable to add 01 to 5.00% by weight. For example, carbon black can be used as the light-shielding substance. By adding this carbon black, the light shielding property can be secured and the physical strength can be improved. The amount of carbon black added is preferably 0.01 to 2.00% by weight. If the added amount exceeds 0.01% by weight, the effect of improving the light-shielding property and the physical strength is exhibited, but if the added amount exceeds 2.00% by weight, the physical strength is lowered.

  As the lubricant, for example, a silicone-based lubricant can be used. Since the friction resistance is reduced by the addition of the silicone lubricant, the generation of shavings due to the movement of the shutter 13 can be reduced. Further, the generation of shavings when the recording disk 4 and the inner wall of the cartridge main body 11 come into contact with each other during transportation can be reduced. Furthermore, since the handleability such as insertability into equipment is improved and the fluidity is improved, the kneadability during molding and the workability such as injection moldability are also improved.

  The addition amount of the silicone lubricant is preferably 0.1 to 3.0% by weight. Less than 0.1% by weight is less effective, and more than 3.0% by weight results in too good fluidity, resulting in slippage between the screw and resin during kneading and molding, resulting in poor workability and bleeding out on the product surface. This is because it may adhere to the recording disk 4 or the user's hand and cause problems in handling and appearance. In addition, when using copolymer silicone, since the said malfunction becomes difficult to produce, it is possible to add to 5.0 weight%.

(Second Embodiment)
A hologram recording medium cartridge (hereinafter abbreviated as cartridge) according to a second embodiment to which the present invention is applied will be described in detail with reference to the drawings. 14 to 16 are perspective views showing the external shape of the cartridge according to the second embodiment. FIGS. 17A and 17B are cross-sectional views of the main part in the direction orthogonal to the cartridge loading direction C, and FIG. It is a disassembled perspective view which shows the structure of a shutter.

  As shown in FIG. 14, the cartridge 102 accommodates a disc-shaped hologram recording medium (hereinafter referred to as a recording disc) 104 in a rotatable manner in a disc accommodating portion 103 which will be described later. The recording disk 104 is handled while being accommodated in the cartridge 102.

  The recording disk 104 is a photosensitive recording medium in which a hole is formed in the central portion to form a disk, and a hologram recording layer made of a photosensitive material is provided on both sides. On this hologram recording layer, for example, data is recorded in a multi-layered manner as interference fringes of laser light by laser light in the wavelength range of green 532 nm to blue 405 nm. Note that a reinforcing material may be added to the hole of the recording disk 104.

  As shown in FIG. 15, openings 107 and 108 for exposing the recording disk 104 accommodated in the disk accommodating portion 103 to the outside are formed in the A surface 102 a and the B surface 102 b of the cartridge 102. These openings 107 and 108 are normally closed by a shutter 110 that is movably provided outside the cartridge 102, and are opened when the shutter 110 is moved toward the open position in the direction of arrow D. The shutter 110 is biased by a spring in the direction of arrow E, which is the closed position, and is locked at the closed position by lock mechanisms 111 and 112 provided on both sides of the cartridge 102 so as to operate independently. Therefore, the shutter 110 does not move due to vibration or impact on the cartridge 102, and the openings 107 and 108 are not opened carelessly.

  The cartridge 102 is inserted from the loading direction C into a cartridge slot provided in a recording apparatus that records data on the recording disk 104 and a reproducing apparatus that reads data from the recording disk 104. The cartridge 102 loaded in the recording apparatus or the reproducing apparatus is positioned by positioning holes 115 provided at both ends, the shutter 110 is moved to the open position, and the openings 107 and 108 are opened. For example, when the cartridge 102 is loaded in the apparatus in the state shown in FIG. 14, the pickup unit of the apparatus is inserted into the cartridge 102 through the opening 108 on the B surface 102 b, and the hologram recording layer on the lower surface of the recording disk 104 is inserted. Data is recorded or played back. As shown in FIG. 15, when the cartridge 102 is turned over and loaded into the apparatus, a pickup unit is inserted from the opening 107 disposed on the A surface 102a, and the hologram on the A surface 102a of the recording disk 104 in FIG. Data is recorded or reproduced on the recording layer.

  In the recording apparatus and the reproducing apparatus, a lock release mechanism that releases the lock mechanisms 111 and 112 of the cartridge 102 and a shutter opening / closing mechanism that moves the shutter 110 between a closed position and an open position are incorporated.

  When the shutter opening / closing mechanism inserts a driving pin into the hole 110a formed in the side surface of the shutter 110 and moves it in the opening direction D in a state where the lock mechanisms 111 and 112 are released, the shutter 110 is moved. By sliding, the openings 107 and 108 on both sides of the cartridge 102 are opened as shown in FIG.

  As shown in FIG. 17A, the cartridge 102 includes a cartridge main body 125 that rotatably accommodates the recording disk 104, and a shutter 110 that opens and closes the openings 107 and 108 on both sides of the cartridge main body 125 from the outside.

  The cartridge main body 125 includes a substantially plate-shaped first shell 130 and a second shell 131 joined to the first shell 130. The first shell 130 and the second shell 131 are made of the same or similar thermoplastic plastic to which a light shielding material and a lubricant are added.

  Various substances can be added as the light-shielding substance. For example, 0.01 to 5.00% by weight is preferably added depending on the light-shielding substance to be used. For example, carbon black can be used as the light-shielding substance. The amount of carbon black added is preferably 0.01 to 2.00% by weight. If the added amount exceeds 0.01% by weight, the effect of improving the light-shielding property and the physical strength is exhibited, but if the added amount exceeds 2.00% by weight, the physical strength is lowered.

  As the lubricant, for example, a silicone-based lubricant can be used. Since the frictional resistance is reduced by the addition of the silicone lubricant, the generation of shavings due to the movement of the shutter 110 can be reduced. Further, it is possible to reduce the generation of shavings when the recording disk 104 and the inner wall of the cartridge 102 come into contact with each other due to an impact during transportation. Furthermore, the handleability of the insertion performance into the device is improved. Moreover, since fluidity | liquidity improves, workability, such as kneadability at the time of shaping | molding and injection molding, also improves.

  The addition amount of the silicone lubricant is preferably 0.1 to 3.0% by weight. Less than 0.1% by weight is less effective, and more than 3.0% by weight results in excessive fluidity and slippage between the screw and resin during kneading and molding, resulting in poor workability and bleeding on the product surface. This is because it may adhere to the recording disk 104 or the user's hand and cause troubles in handling and appearance. In addition, when using copolymer silicone, since the said malfunction becomes difficult to produce, it is possible to add to 5.0 weight%.

  On the inner surface of the first shell 130, a substantially circular disc housing portion 103 in which the recording disc 104 is housed, a first recess 134 provided in a ridge shape so as to surround the periphery of the disk housing portion 103, A second recess 135 is provided on the entire periphery of the edge.

  Further, on the inner surface of the second shell 131, an inner surface portion 141 constituting the disc housing portion 103 of the first shell 130, and a first convex portion 142 inserted into the first concave portion 134 of the first shell 130, The second convex portion 143 inserted into the second concave portion 135 and the light shielding wall (not shown) provided so as to surround the positioning hole 115 and inserted into the light shielding wall (not shown). Is provided.

  When the recording disk 104 is placed on the disk housing portion 103 and the second shell 131 is superimposed on the upper surface of the first shell 130, the first convex portion 142 is fitted into the first concave portion 134. The front end 142a of the first convex portion 142 fitted into the first concave portion 134 faces the inner surface 130a of the first shell 130, and the front end 143a abuts on the inner surface of the first shell 130. Is formed.

  Since the outer periphery of the disk housing portion 103 is surrounded by a labyrinth-shaped light shielding structure, light and dust do not enter the disk housing portion 103 from the joint of the first shell 130 and the second shell 131.

  The second convex portion 143 of the second shell 131 is fixed to the inner surface of the first shell 130 by ultrasonic welding. Thereby, since the 1st shell 130 and the 2nd shell 131 are joined firmly, a clearance gap does not open at the joint of both. In addition, when ultrasonic welding is performed, plastic powder may be scattered around. However, by performing the ultrasonic welding in the second recess 135, the scattering can be minimized and the recording disk 104 can be prevented from being damaged.

  When the first shell 130 and the second shell 131 are ultrasonically welded after the shutter 110, the lock mechanism 111, and the like are incorporated into the cartridge main body 125, other parts such as the shutter 110 may be welded together. In order to prevent this, it is preferable to use a different type of plastic from the first shell 130 and the second shell 131 as the material of other components such as the shutter 110.

  In order to more reliably join the first shell 130 and the second shell 131 by ultrasonic welding, it is preferable to provide a projecting energy director at the tip of the second convex portion 143. When ultrasonic welding is performed by providing an energy director, ultrasonic energy is concentrated on the energy director, so that the second convex portion 143 and the first shell 130 can be welded more firmly. Note that the ultrasonic welding between the first shell 130 and the second shell 131 may be performed on the entire circumference of the second convex portion 143 or may be performed in a spot manner at regular intervals.

  The shutter 110 is made of a plastic different from the first shell 130 and the second shell 131. A light-shielding substance and a lubricant may be added to this plastic in the same manner as the plastic used for molding the first shell 130 and the second shell 131. As shown in FIG. 18, the shutter 110 is formed integrally with the base portion 150 so as to sandwich the upper and lower surfaces of the cartridge main body 125 with the base portion 150 disposed on the side surface of the cartridge main body 125 on the loading direction C side. It consists of a first shutter plate 151 and a second shutter plate 152. A spring hook piece 156 on which one end of the shutter spring 154 is hung is integrally provided on the inner surface of the base portion 150. The other end of the shutter spring 154 is hooked on the spring hooking piece 138 of the first shell 130 and stored in the notch 137, and urges the shutter 110 toward the closed position.

  On the outer surfaces of the first shell 130 and the second shell 131, slits 160, 161 for accommodating the side edges 151a, 152a of the shutter plates 151, 152 in the closing direction E, and the rear edges 151b of the loading direction C, Slits 162 and 163 (see FIGS. 14 and 15) for accommodating 152b are respectively formed. Further, the shutter plates 151 and 152 move in the direction of opening the shutters 110 of the first light shielding plate portions 151c and 152c and the first light shielding plate portions 151c and 152c that slide so as to open and close the openings 107 and 108. Second light shielding plate portions 151d and 152d erected vertically at the tip of the side, and a third light shielding plate portion 151e erected vertically in the direction in which the shutter 110 is closed with respect to the second light shielding plate portions 151d and 152d. , 152e. The side edge in the opening direction D of each shutter plate 151, 152 functions as a substantially U-shaped bent portion in a section in the opening / closing direction. Protrusions 165 and 166 are provided on the outer surfaces of the first shell 130 and the second shell 131 so as to face the shutter plates 151 and 152. When the shutter 110 is in the closed position, the first light shielding plate portions 151c and 152c are provided. And the third light shielding plate portions 151e and 152e.

  When the shutter 110 is in the closed position, the end edges 151a, 151b and 152a, 152b of the shutter plates 151, 152 are inserted into the slits 160, 162, 161, 163 of the shells 130, 131, respectively. Protruding portions 165 and 166 provided in 131 enter between the first light shielding plate portions 151c and 152c of the shutter plates 151 and 152 and the third light shielding plate portions 151e and 152e. Thereby, since the cartridge main body 125 and the shutter 110 are also surrounded by the labyrinth-shaped light blocking structure, it is possible to effectively prevent light and dust from entering through the gap between the cartridge main body 125 and the shutter 110.

Positioning steps 170 are respectively formed on the A surface 102a side and the B surface 102b side of the cartridge 102 having the above structure.
The positioning step portion 170 is formed by reducing the thickness of the cartridge body 125 on the front side in the loading direction on the front side in the loading direction with respect to the hologram recording apparatus.
The positioning step 170 includes a side positioning step 170a formed in an arc shape along the periphery of the recording disk 104 in plan view, and a loading direction positioning step formed in a straight line along a direction orthogonal to the loading direction. Part 170b.

  When the cartridge 102 is loaded into the hologram recording apparatus, a pair of positioning pins 181a and 181b (see FIG. 14) provided on the apparatus side are connected to the side positioning step 170a constituting the positioning step 170. By engaging with the loading direction positioning step 170b and being disposed at these corners, the cartridge 102 is accurately positioned in the direction orthogonal to the loading direction and in the loading direction.

  As shown in FIG. 18, guide protrusions 151h and 152h are formed on the inner surfaces of the shutter plates 151 and 152 of the shutter 110, and the guide protrusions 151h and 152h are inserted on the outer surfaces of the shells 130 and 131, respectively. Guide grooves 170 and 171 are formed. When the shutter 110 moves on the outer surface of the cartridge main body 125, the guide protrusions 151h and 152h move in the guide grooves 170 and 171. As a result, the shutter 110 can move smoothly without being detached from the cartridge main body 125. Since the first shell 130, the second shell 131, and the shutter 110 are made by adding a lubricant to the raw material plastic, shavings and the like are not generated by friction when the shutter 110 moves.

Next, examples of the present invention will be described.
The thermoplastics used to mold the first and second shells are PC, PBT, ABS, POM, PS, PP, HDPE, PA, PET, PPS, SAN (styrene-acrylonitrile copolymer), PMMA, PC, etc. Can be used. In addition, in order to prevent erroneous welding due to ultrasonic welding, parts other than the first shell and the second shell are selected from the thermoplastic plastics different from those used for the first shell and the second shell. Good.

  For the first shell and the second shell, a light-shielding plastic having a visible light transmittance of 1.0% or less at a thickness of 0.2 mm is used. It is preferable to form in the range of 2-1.6 mm. In order to obtain a plastic having the above light-shielding characteristics, a light-shielding substance may be added. Various materials can be used as the light shielding material, and it is preferable to add 0.01 to 5.00% by weight depending on the light shielding material to be used. The following may be considered as the light shielding material.

(1) Inorganic compound A, oxide: silica, diatomaceous earth, alumina, titanium oxide, iron oxide (iron black), zinc oxide, magnesium oxide, antimony oxide, barium ferrite, strontium ferrite, beryllium oxide, pumice, pumice balloon A, alumina fiber, etc. B, hydroxide ... aluminum hydroxide, magnesium hydroxide, basic magnesium carbonate, etc. C, carbonate ... calcium carbonate, magnesium carbonate, dolomite, dosonite etc. D, (sulfur) sulfate ... calcium sulfate , Barium sulfate, ammonium sulfate, calcium sulfite, etc. E, silicate ... talc, clay, mica, asbestos, glass fiber, glass balloon, glass beads, calcium silicate, montmorillonite, bentonite, etc. F, carbon ... carbon black, graphite, carbon Fiber, carbon hollow sphere etc. G, its Other ... Iron powder, copper powder, lead powder, aluminum powder, molybdenum sulfide, poron fiber, silicon carbide fiber, brass fiber, potassium titanate, lead zirconate titanate, zinc borate, barium metaborate, calcium borate, boron Sodium acid, aluminum paste, talc, etc.

(2) Organic compound wood flour (pine, firewood, sawtooth, etc.), cereal fiber (almond, beannut, fir etc.), cotton, jute, paper strip, non-wood fiber (wara, kenaf, bamboo, esparto, pagas, Morohaya, fireworks, etc.), cellophane pieces, nylon fiber, polypropylene fiber, starch (including modified starch, surface-treated starch), aromatic polyamide fiber, etc.

  Among these light-shielding substances, inorganic compounds that have little adverse effect on photographic properties, are stable against heat and become opaque even at 150 ° C. or higher, and are particularly excellent in heat resistance and light resistance and are relatively inert. The light-absorbing carbon black, titanium nitride, graphite and iron black are preferred.

  When carbon black is used as the light-shielding substance, the amount added is preferably 0.01 to 2.00% by weight. As described above, this is to obtain a plastic having a good balance between light shielding properties and physical strength.

  Examples of classification based on carbon black materials include gas black, furnace black, channel black, anthracene black, acetylene black, ketjen carbon black, thermal black, lamp black, oil smoke, pine smoke, animal black, and vegetable black.

  As typical examples of commercially available carbon black, for example, carbon black # 20 (B), # 30 (B), # 33 (B), # 40 (B), # 41 (B), manufactured by Mitsubishi Kasei, # 44 (B), # 45 (B), # 50, # 100, # 600, # 950, # 1000, # 2200 (B), # 2400 (B), MA8, MA11, MA100, and the like. Also, various grades such as Denka Black made by Electrochemical, Seaweed of Tokai Carbon, Asahi Carbon Asahi # 78, Showa Cabot Showa Black, Nippon Steel Chemical Niteron, Mitsubishi Chemical Diamond Black, etc. can be used.

  Examples of overseas products include Cabot's B1ack Pear1s 2, 46, 70, 71, 74, 80, 81, 607, etc., Rega1300, 330, 400, 660, 991, SRF-S, Vulcan 3, 6, etc. Ster1ing10, SO, V, S, FT-FF, MT-FF, etc. are mentioned. Furthermore, UnitedR, BB, 15, 102, 3001, 3004, 3006, 3007, 3008, 3009, 3011, 3012, XC-3016, XC-3017, 3020, etc. of Ashland Chemical Co. can be mentioned. However, it is not limited to these.

  In addition, as a lubricant to be added to the first shell and the second shell, silicone-based lubricants, particularly various grades of dimethylpolyoxane can be used. Toray, Dow Corning, Silicone, GE Toshiba Silicone, Asahi Kasei Various grades commercially available from Wacker Silicone, Shin-Etsu Chemical, etc. can be used. Both master batches and kneaded products can be used. The addition amount of the silicone lubricant is preferably 0.1 to 5.0% by weight. As described above, this is to obtain a plastic having a good balance between frictional resistance, manufacturing suitability, and product quality.

  Further, as the rough surface provided on the shell, if the surface roughness Ra is 5 μm or less, the light diffusion effect is thin, and if it is 20 μm or more, there is a possibility that scratches may be generated when contacting the recording disk. Therefore, mat processing or surface processing with a surface roughness Ra; 5 to 20 μm is preferable.

  The aluminum alloy used for the light shielding plate 12 and the shutter member 55 is preferably an A1-Mg alloy, for example, JIS alloy numbers 5052 and 5056 are preferable. In order to increase the strength, JIS alloy numbers 5083 and 5086 are more preferable. Furthermore, when increasing the strength, A1-Mg-Si alloy (eg JIS alloy number 6063, 6061), Al-Cu alloy (eg JIS alloy number 2014, 2017), A1-Zn-Mg series An alloy (for example, JIS alloy number 7003, 7N01, 7075, 7050) or the like may be used. From the viewpoint of weight reduction and ease of processing, the thickness of the light shielding plate and the shutter member is preferably 1.0 mm or less, more preferably 0.15 to 0.5 mm.

  Further, the light shielding plate and the shutter member may be formed of plastic. As the plastic to be used, for example, POM or the like is suitable, and it is preferable to add a light-shielding substance or a lubricant as in the case of the first shell described above.

  For the shutter spring and the lock spring, it is preferable to use austenitic spring stainless steel from the viewpoint of spring constant, durability, workability, etc. For example, SUS300 series can be used. The preferred wire diameter is preferably 0.2 to 0.7 mm for the shutter spring and 0.15 to 0.4 mm for the lock spring.

  Further, although ultrasonic welding is used for fixing the first shell and the second shell, other welding methods and fixing methods may be used. For example, when fixing with a screw or the like, it is preferable to form a light shielding structure around the screw hole. Moreover, although the second shell and the first shell are configured by one component, a plurality of components may be combined and formed. For example, if it is configured with two parts with the shutter housing portion as a boundary, the mold can be simplified.

  Further, the cartridge containing the recording disk capable of recording on both sides is taken out as an example, but the cartridge may be adapted to the recording disk recorded on one side. In this case, an opening is formed only on one surface, and this opening is opened and closed with a shutter. Further, although the cartridge for accommodating the hologram recording medium has been described as an example, the present invention can be applied to a cartridge for accommodating another photosensitive recording medium.

It is a perspective view which shows the external appearance shape of the cartridge which concerns on 1st Embodiment of this invention. It is an external appearance perspective view which shows the surface on the opposite side of a cartridge. It is an external appearance perspective view which shows the shutter open state of a cartridge. It is a disassembled perspective view which shows the structure of a cartridge. 4A and 4B are cross-sectional views in the loading direction of the cartridge, where FIG. 5A is an overall view, FIG. It is a disassembled perspective view which shows the structure of a locking mechanism. It is operation | movement explanatory drawing of the locking mechanism shown in FIG. It is explanatory drawing which shows an example of the various mechanisms for opening a shutter. FIG. 2 is a schematic configuration diagram of a recording apparatus for explaining positioning of a cartridge in the recording apparatus. FIG. 10 is an XX arrow view in FIG. 9 for explaining the positioning of the cartridge in the recording apparatus. It is a schematic block diagram of the hologram recording device explaining positioning of the recording disk single-piece | unit in a recording device. It is a YY arrow line view in FIG. 11 explaining the positioning of the recording disk single-piece | unit in a recording device. FIG. 10 is an XX arrow view in FIG. 9 for explaining positioning of another cartridge in the recording apparatus. It is a perspective view which shows the external appearance of the cartridge of 2nd Embodiment. It is a perspective view which shows the external appearance shape of the back surface side of a cartridge. It is an external appearance perspective view which shows the shutter open state of a cartridge. It is sectional drawing of the direction orthogonal to the loading direction of a cartridge. It is a disassembled perspective view which shows the structure of a shutter.

Explanation of symbols

2,102 Cartridge 4,104 Recording disk (photosensitive recording medium)
11, 125 Cartridge body 12 Light shielding plate 13, 110 Shutter 14, 15 Open 18, 19, 107, 108 Open 60, 90, 170 Positioning step 60a, 90a, 170a Side positioning step 60b, 90b, 170b Loading direction positioning Step part 81a, 81b, 181a, 181b Positioning pin 86 Recording device

Claims (12)

A cartridge main body that rotatably accommodates a disc-shaped photosensitive recording medium, an opening provided in the cartridge main body for exposing the photosensitive recording medium to the outside, and a closed position that closes the opening are opened. A shutter attached to the cartridge body so as to be movable between an open position and a read / write operation with respect to the photosensitive recording medium in a state where the shutter is opened after being positioned and loaded in a recording apparatus. A cartridge to be performed,
A photosensitive recording medium cartridge comprising a positioning step portion which is positioned at a predetermined position by being engaged with a positioning pin disposed on the front side in the loading direction of the recording apparatus.   The positioning step portion includes a side positioning step portion that performs positioning in a direction orthogonal to the loading direction to the recording apparatus by engagement with the positioning pin, and a loading direction positioning that performs positioning in the loading direction to the recording apparatus. The photosensitive recording medium cartridge according to claim 1, further comprising a step portion.   3. The photosensitive recording medium cartridge according to claim 2, wherein the side positioning step portion is a step portion formed in an arc shape along a peripheral edge of the photosensitive recording medium.   3. The photosensitive recording medium cartridge according to claim 2, wherein the side positioning step portion includes a step portion formed in a V shape that is narrowed rearward in the loading direction of the photosensitive recording medium.   3. The photosensitive recording medium according to claim 2, wherein the loading direction positioning step is a step formed in a straight line along a direction orthogonal to the loading direction to the photosensitive recording medium. cartridge.   A light-shielding plate is provided that is attached to the outside of the cartridge body and has an opening hole that faces the opening formed in the cartridge body and exposes the center of the photosensitive recording medium and the recording surface to the outside. The cartridge for photosensitive recording media according to any one of claims 1 to 5.   7. The photosensitive recording medium cartridge according to claim 1, wherein the photosensitive recording medium is a hologram recording medium.   2. The cartridge body according to claim 1, wherein an inner surface with respect to the photosensitive recording medium and an outer surface with respect to the shutter are subjected to a matte process or a texture process with a surface roughness Ra of 5 to 20 [mu] m. The cartridge for photosensitive recording media according to claim 7.   The cartridge body includes a substantially plate-shaped first shell and a second shell that is overlapped and welded to the first shell, and the first shell and the second shell are formed of the same or similar thermoplastic plastic. 9. The photosensitive recording medium according to claim 1, wherein the other components including the shutter are formed of a material different from that of the first shell and the second shell. Cartridge.   10. The first shell and the second shell, and the shutter, wherein 0.01 to 5.00% by weight of a light shielding material is added to plastic used for molding. The photosensitive recording medium cartridge according to claim 1.   11. The first shell, the second shell, and the shutter, wherein 0.01 to 2.00% by weight of carbon black is added to a plastic used for molding thereof. A cartridge for photosensitive recording medium according to claim 1.   12. The first shell and the second shell, and the shutter, wherein a silicone lubricant is added to a plastic used for molding in an amount of 0.1 to 5.0% by weight. The photosensitive recording medium cartridge according to claim 1.

Images