JP2007058984A - Photosensitive recording medium cartridge and drive device - Google Patents

Abstract

Reliability that can prevent exposure of a photosensitive recording medium by reliably locking the shutter in a closed state and preventing the shutter from being unlocked by operating the lock mechanism by mistake. A highly sensitive photosensitive recording medium cartridge and driving device are provided.
A cartridge 2 containing a photosensitive recording disk 4 includes a cartridge main body 11 having openings 18 and 19 for exposing a central portion 4a and a recording surface 4b of the recording disk 4 to the outside, and an outer side of the cartridge main body 11. A shutter 13 that is slidably incorporated to open and close the openings 18 and 19 and a lock mechanism 27 that locks the shutter 13 in a closed position are provided. An operated member 63 that constitutes the lock mechanism 27 is disposed inside the cartridge body 11. The lock is released by inserting the lock release pin 79 a into the release hole 56 d formed in the slide member 56 and pressing the lock release portion 63 a of the operated member 63.
[Selection] Figure 12

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photosensitive recording medium cartridge for storing a photosensitive recording medium and a driving apparatus, and more particularly, a locking mechanism that locks a shutter that opens and closes an opening provided in a cartridge body at a closed position or releases the lock. And a photosensitive recording medium cartridge.

  A hologram recording medium for recording data by hologram has been invented (see, for example, Patent Document 1). This hologram recording medium is a photosensitive recording medium in which a hologram recording layer made of a photosensitive material is layered on a disk-shaped support, and has been widely used by recording data in multiple layers as laser light interference fringes. Thus, a larger data recording capacity can be obtained than a DVD that is a recording medium. 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, Patent Document 2). reference). In addition, a cartridge having an inner case, an outer case, and a shutter and having a lock mechanism for locking the shutter is known (for example, see Patent Document 3).

  In the invention described in Patent Document 1, a hologram recording medium is accommodated in a cartridge similar to a DVD-RAM cartridge. This cartridge is formed of a material having a low transmittance of light in a wavelength region that affects the hologram recording layer. Although the detailed configuration of the cartridge is not described in Patent Document 1, it is considered that the cartridge has the same configuration as the cartridge described in Patent Document 2.

  In the invention described in Patent Document 2, a cartridge is formed of a material that shields the sensitive color of the hologram recording layer, and a sponge-like light shielding material is attached to the joint of the movable part that exposes the hologram recording medium to the outside. . Further, a cartridge body is described that includes a cartridge body that accommodates a recording medium in a rotatable state, an opening that is provided in the cartridge body and exposes a part of the recording medium to the outside, and a shutter that opens and closes the opening. ing.

  The invention described in Patent Document 3 includes an elastic piece extending from the shutter and having a locking claw at the tip, and the locking claw is related to a first engagement recess or a second engagement recess formed in the outer case. In combination, there is provided a lock mechanism for holding the shutter in the closed position or the open position.

JP 2004-029476 A JP 2003-317422 A JP-A-8-55456

  If the cartridge containing the hologram recording medium is not properly shielded and dust-proof between the cartridge main body and the shutter, light and dust will enter the cartridge and adversely affect the hologram recording medium. Furthermore, even if light shielding and dustproofing are properly performed, if the shutter is opened carelessly, the hologram recording medium is exposed and cannot be used. Therefore, it is desirable to install a shutter locking mechanism in order to prevent erroneous operation of the shutter.

  However, Patent Document 1 does not describe a light shielding and dustproof structure between the cartridge main body and the shutter and a lock mechanism. Further, the cartridge described in Patent Document 2 shields light between the cartridge body and the shutter by a sponge-like light shielding material, but does not include a lock mechanism for locking the shutter in the closed position, and the shutter is inadvertent. There is a possibility that the hologram recording medium may be released and the hologram recording medium may become unusable due to exposure.

  The cartridge described in Patent Document 3 does not describe any light shielding structure. In addition, although a shutter locking mechanism is provided, this locking mechanism simply fits a locking claw formed at the tip of a thin plate spring material having elasticity into an engaging recess provided in the outer case. The shutter is held in a closed position or an open position, and a riding portion that is operated when releasing the lock is disposed outside the surface of the outer case. Therefore, it is easy to contact the riding section, and if the riding section is accidentally pressed, the lock may be released and the shutter may be opened. As a photosensitive recording medium cartridge, there is not necessarily sufficient performance and there is room for improvement. It was.

  If it is simply difficult to unlock the shutter, it may be possible to release the lock by a two-stage operation. In this case, the photosensitive recording medium cartridge locking mechanism and recording / reproduction are possible. The mechanism of the apparatus becomes complicated, which hinders downsizing and increases the manufacturing cost.

  The present invention has been made in view of the above circumstances, and its purpose is to ensure that the shutter is locked in a closed state and that the lock mechanism is not accidentally operated to unlock the shutter. Another object of the present invention is to provide a highly reliable photosensitive recording medium cartridge capable of preventing exposure of the photosensitive recording medium.

The above object of the present invention is achieved by the following photosensitive recording medium cartridge.
(1) A disc-shaped photosensitive recording medium, a cartridge main body having an opening for rotatably accommodating the photosensitive recording medium and exposing the center and recording surface of the photosensitive recording medium to the outside, and the cartridge main body A shutter that is incorporated on the outside of the shutter and movably disposed between a closed position that closes the opening and an open position that opens the opening, and a lock mechanism that locks the shutter in the closed position. And the locking mechanism is pressed from the front to the back in the loading direction of the photosensitive recording medium cartridge and the locking portion that engages with the shutter and locks the shutter. An unlocking portion for unlocking the shutter, and disposed inside the cartridge body, wherein the shutter closes the shutter. A release hole into which a lock release pin can be inserted is provided at a position facing the lock release portion at a position, and the lock release pin is inserted into the release hole from the front to the rear in the loading direction of the photosensitive recording medium cartridge. Accordingly, the lock for the photosensitive recording medium is released by pressing the lock release portion.

  According to the photosensitive recording medium cartridge configured as described above, since the unlocking portion of the locking mechanism is disposed inside the cartridge body, the unlocking portion can be operated from the outside of the cartridge unless a tool or the like is used. I can't. Therefore, the shutter is not opened carelessly by the carelessness of the operator, and the photosensitive recording medium is prevented from being exposed to light and is accommodated in the photosensitive recording medium cartridge. This facilitates the handling of the photosensitive recording medium cartridge.

  In addition, the shutter has a release hole at a position facing the lock release portion in the closed position, and a lock release pin is inserted into the release hole from the front to the back in the loading direction of the photosensitive recording medium cartridge. When the unlocking portion is pressed, the shutter is unlocked. Accordingly, the shutter can be unlocked only by an operation of loading the photosensitive recording medium cartridge into the recording / reproducing apparatus. That is, the shutter is difficult to open due to an erroneous operation, and can be easily opened during normal use, so that handling and reliability are improved.

  (2) The cartridge for a photosensitive recording medium according to (1), wherein the release hole is formed to penetrate from a front surface in the loading direction of the shutter to a concave portion with which the locking portion is engaged. .

  According to the photosensitive recording medium cartridge having the above-described configuration, the release hole is formed so as to penetrate from the front surface of the shutter to the concave portion where the engaging portion engages, so that the photosensitive recording medium cartridge is attached to the recording / reproducing apparatus. By doing so, the lock release pin is inserted into the release hole and presses the lock release portion. Thereby, the release mechanism provided in the recording / reproducing apparatus can be a simple mechanism. Further, the shutter can be automatically unlocked by pressing the lock release unit only by the operation of loading the photosensitive recording medium cartridge.

  (3) The photosensitive recording medium cartridge according to (1) or (2), wherein the photosensitive recording medium is a hologram recording medium.

  According to the photosensitive recording medium cartridge configured as described above, the hologram recording medium can be held in the cartridge body in a clean state without being exposed to light.

  (4) A disc-shaped photosensitive recording medium, a cartridge main body having an opening for rotatably accommodating the photosensitive recording medium and exposing the center and recording surface of the photosensitive recording medium to the outside, and the cartridge main body A shutter that is incorporated on the outside of the shutter and movably disposed between a closed position that closes the opening and an open position that opens the opening, and a lock mechanism that locks the shutter in the closed position, A locking portion that engages with the shutter to lock the shutter, and a lock release portion that unlocks the shutter when pressed from the front to the back in the loading direction of the photosensitive recording medium cartridge. A photosensitive recording medium cartridge having a recording device for recording and reproduction, the position facing the unlocking portion of the cartridge A lock release pin, driving apparatus characterized by pressing the unlocking portion by inserting the unlocking pin rearwardly from the loading direction in front of the cartridge into the release hole.

  According to the driving device of the present invention, the opening / closing operation of the shutter of the photosensitive recording medium cartridge configured as described above can be smoothly performed during recording and reproduction.

  (5) The drive unit according to (4), wherein a pair of the lock release pins are provided at symmetrical positions with respect to the side surface on the insertion side of the cartridge body. In this way, the unlocking portion can be operated by any one of the unlocking pins, regardless of which side of the cartridge is set upward in the drive device.

  (6) The drive unit according to (4) or (5), further including a positioning member that engages with a positioning groove provided on a side surface of the cartridge body. In this way, the cartridge loaded in the drive device can be held at an appropriate position during recording and reproduction.

  (7) The drive unit according to any one of (4) to (6), further including a shutter slide mechanism that opens and closes the shutter. In this way, the shutter of the cartridge loaded in the driving device can be opened and closed.

  (8) The drive unit according to any one of (4) to (7), wherein the lock release pin is movable in a release direction. In this way, unlocking can be performed more smoothly.

  (9) In the above (5), one of the pair of lock release pins is inserted in the release hole, and the other is brought into contact with the cartridge main body to be retracted in the insertion direction of the cartridge. The drive device described. In this way, even when the cartridge is loaded in an inverted state, the unlocking can be reliably performed without the cartridge body and the unlocking pin interfering with each other.

  According to the photosensitive recording medium cartridge and the driving device of the present invention, the shutter is securely locked in the closed state, and the lock mechanism is prevented from being erroneously operated to unlock the shutter. Thereby, exposure of the photosensitive recording medium due to inadvertent opening of the shutter can be prevented.

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 FIGS. 1 to 3, the cartridge 2 is loaded from the direction of the arrow C into a hologram recording device 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. 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 are formed. These external openings 14 and 15 are closed by the first shutter 55a and the second shutter 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 D, an internal opening having the same shape as the external openings 14 and 15 provided in the cartridge body 11 so as to face the external openings 14 and 15. 18 and 19 are opened together with the external openings 14 and 15. 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. The lock mechanism is released by pressing the lock release portion 63a of the operated member 63 constituting the lock mechanism 27 from the release hole 56d provided in the slide member 56 disposed on the front surface of the cartridge body 11 in the loading direction. (See FIG. 4). Since the operated member 63 is disposed inside the cartridge main body 11, it is difficult to contact from the outside, and the shutter 13 is not inadvertently opened.

  4 is an exploded perspective view showing the configuration of the cartridge 2, FIG. 5 is a sectional view taken along the line VV in FIG. 4, and FIG. 6 is a sectional view taken along the line VI-VI in FIG. 7A is a sectional view of the cartridge in the loading direction, FIG. 7B is a partially enlarged view of FIG. 7A, FIG. 7C is another enlarged view of FIG. 8A, and FIG. FIGS. 9A and 9B are cross-sectional views in the orthogonal direction, where FIG. 9A is a cross-sectional view with the shutter closed, FIG. 9B is a cross-sectional view with the shutter open, and FIG. 10 and 10 are enlarged views of a portion surrounded by a circle X in FIG.

  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. 7C, 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 e of the first shell 25. The disk housing portion 3 is formed by these light shielding walls 30, 31, 35 and the inner surfaces 25 e of the first shell 25 and the second shell 26. The side wall of the disk housing portion 3 has a labyrinth-like light shielding structure formed by interposing three light shielding walls 30, 31, 35. 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 25e 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 FIGS. 4 and 7 to 10, the outer surfaces of the first shell 25 and the second shell 26 are stepped portions that are slightly larger than the shape of the light shielding plate 12 and deeper than the thickness of the light shielding plate 12. Light shielding plate mounting surfaces 25a and 26a having 25d and 26d and offset inward are formed.

  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 FIGS. 4 to 6, 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. It is bent so as to be. Thereby, the light shielding plate 12 has 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.

  Each of the ridgeline part of the 3rd board part 12c, the 1st board part 12a, and the 2nd board part 12b, and two sides of the cartridge 2 in the loading direction C and one side in the direction orthogonal to the loading direction C Incision is made in the intersecting portion so that the outer peripheral end portions of the first plate portion 12a and the second plate portion 12b approach each other (in other words, toward the cartridge main body 11 when attached to the cartridge main body 11). Direction). As a result, a substantially U-shaped bent portion 12d is formed at the outer peripheral ends of the first plate portion 12a and the second plate portion 12b. It is desirable from the viewpoint of light shielding performance that the bent portion 12d is formed on all three sides of the outer peripheral end portion, but is not limited thereto.

  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. Further, as shown in FIGS. 7 to 10, the tips of the bent portions 12d of the first plate portion 12a and the second plate portion 12b are stepped portions 25d and 26d of the first shell 25 and the second shell 26, respectively. Located opposite to.

  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 that are 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.

  As shown in FIGS. 7 to 10, when the light shielding plate 12 is attached to the outside of the cartridge body 11 (light shielding plate attachment surfaces 25 a, 26 a), the pins 50 of the first shell 25 and the second shell 26 are inserted into the holes 49. And protrudes from the surface of the light shielding plate 12. The light shielding plate 12 is fixed to the cartridge body 11 by the tip of each pin 50 being crushed by heat while the tip of the bent portion 12d is pressed against the light shielding plate mounting surfaces 25a and 26a against the elastic force. .

  As a result, the front ends of the bent portions 12d of the light shielding plate 12 are positioned to face the step portions 25d and 26d, respectively, and are pressed against the light shielding plate mounting surfaces 25a and 26a by the elastic force of the light shielding plate 12 without any gaps. Touch. That is, the outer peripheral end of the light shielding plate 12 (the tip of each bent portion 12d) and the light shielding plate mounting surfaces 25a and 26a are in close contact with each other with no gap. Furthermore, since the outer peripheral end of the light shielding plate 12 is covered with the step portions 25d and 26d, even if there is a gap partially due to a component accuracy error or the like, the light is reliably prevented from wrapping around the light. .

  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 55 a 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 plate of the light shielding plate 12. The second shutter 55b is inserted between the second shutter 55b, the first shutter 55a and the second shutter 55b, and a continuous portion 55c to which the slide member 56 is attached.

  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 main body 11 and the light shielding plate 12, generation | occurrence | production of the chips etc. by 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 FIGS. 7B and 11, a groove 56 c is formed on the side surface of the slide member 56 along the longitudinal direction. The ridges 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 end side of the slide member 56, a release hole 56d that is operated when the shutter 13 is opened is formed so as to penetrate therethrough. The release hole 56d is exposed to the outside without being hidden by the third plate portion 12c of the light shielding plate 12 by providing the slide member 56 at an end portion extending in the shutter closing direction with respect to the shutter member 55. Yes. The cutout 40 of the third plate portion 12c of the light shielding plate 12 is provided to expose the release hole 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.

  The slide member 56 is formed with a rectangular hole-shaped recess 56e on the back side at the same position as the release hole 56d. In other words, the release hole 56d passes through the front surface of the slide member 56 and the recess 56e so as to communicate with each other. The right side surface of the recess 56e in the drawing is formed with an engaging inclined surface (engaging portion) 56f that gradually inclines in the shutter closing direction toward the front in the cartridge loading direction. In addition, a corner portion between the right end surface and the lower surface of the slide member 56 in the drawing is formed with a guide inclined surface 56g chamfered substantially parallel to the engaging inclined surface 56f.

  Next, the lock mechanism will be described with reference to FIGS. 11 is an exploded perspective view showing the configuration of the lock mechanism, FIG. 12 is an operation explanatory view of the lock mechanism shown in FIG. 11, and FIG. 13 is an explanatory view showing an example of a mechanism for opening the shutter.

  The lock mechanism 27 includes an operated member 63 and a lock spring 65 that urges the operated member 63 in the counterclockwise direction in the drawing. The operated member 63 has a hole 63 c formed at one end thereof rotatably fitted to a boss 72 formed on the inner surface of the first shell 25. At the tip of the operated member 63, a locking portion 63b that engages with the concave portion 56e of the slide member 56 and locks the shutter 13 is formed. Further, on the upper surface of the operated member 63, a planar unlocking portion 63a and an inclined surface 63e continuous from the unlocking portion 63a in the direction of the hole 63c are formed.

  When the shutter 13 is in the closed position, the lock release portion 63a is inserted into the concave portion 56e of the slide member 56 and is positioned to face the release hole 56d. The locking portion 63b has a hook shape that is inclined substantially parallel to the engagement inclined surface 56f of the recess 56e. When the slide member 56 moves in the left direction in the figure (the direction in which the shutter opens), the engagement inclination Engage with the surface 56f to lock the shutter 13 in the closed position. When the shutter 13 moves from the open position to the closed position, the inclined surface 63e contacts the guide inclined surface 56g of the slide member 56 and rotates the operated member 63 in the clockwise direction, so that the locking portion 63b is inserted into the recess 56e. To help. The lock spring 65 has one end engaged with a boss 71 formed on the first shell 25 and the other end engaged with an operated member 63 to urge the operated member 63 counterclockwise.

  12A, the right end portion of the locking portion 63b and the left end portion of the engagement inclined surface 56f of the recessed portion 56e are arranged on the same vertical line or with a slight gap in the horizontal direction. Has been. In other words, in this state, the locking portion 63b and the engagement inclined surface 56f are not engaged.

  However, when the slide member 56 slightly moves in the left direction in the figure, the engagement inclined surface 56f reliably engages with the locking portion 63b and prevents the slide member 56 from moving. When the slide member 56 moves leftward, the shutter 13 also moves in the opening direction. However, the moving distance until the engaging inclined surface 56f engages with the engaging portion 63b is the cartridge around the inner openings 18 and 19. The amount of overlap between the main body 11 and the shutter 13 is much smaller, and the internal openings 18 and 19 are never opened.

  As shown in FIG. 12A, when the cartridge is not used, the operated member 63 is urged counterclockwise in the drawing by the urging force of the lock spring 65, and the locking portion 63b is inserted into the recess 56e. Thus, when the shutter 13 is slid from the closed position to the open position, the engagement inclined surface 56f and the locking portion 63b are not engaged and slid.

  As shown in FIG. 13, for example, a pair of positioning members 77 a and 77 b and a lock release portion 63 a of the operated member 63 are pressed into a hologram recording device (driving device) that is used by loading the cartridge 2. An unlocking mechanism 78 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 the direction orthogonal to the insertion direction.

  The lock release mechanism 78 includes a lock release pin 79a that is inserted into the release hole 56d of the slide member 56 and presses the lock release portion 63a, and a slide mechanism that slides the lock release pin 79a in the direction of the arrow. 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 unlocking mechanism 78 is symmetric with respect to the side surface on the insertion side of the cartridge main body 2 (the front side surface in FIG. 13) so that the lock releasing portion 63a can be pressed even when the cartridge 2 is reversed and loaded. Is provided with a lock release pin 79b for reverse loading. The pair of lock release pins 79a and 79b are simultaneously moved in the arrow direction. When one lock release pin is engaged with the release hole 56d, the other lock release pin becomes an obstacle, so that the lock release pins 79a and 79b are loaded when the cartridge 2 is loaded. It is preferable to have a structure that retracts in the direction (direction of arrow C in FIG. 13).

  As shown in FIG. 12B, when the cartridge is loaded into the hologram recording device or the like, the cartridge 2 is positioned by the positioning member 77a inserted into the positioning groove 7, and the lock release pin 79a is attached to the slide member 56. The lock release part 63a of the operated member 63 is pressed by being inserted into the release hole 56d. As a result, the operated member 63 rotates clockwise and the locking portion 63b comes out of the recess 56e of the slide member 56, so that the shutter can be moved. Next, the lock release pin 79a moves leftward in the figure while being fitted in the release hole 56d, and opens the shutter.

  In the lock mechanism 27 of this embodiment, since the operated member 63 for releasing the lock of the shutter 13 is disposed inside the cartridge 2, it is difficult to operate from the outside, and the shutter 13 is inadvertently moved. It is possible to effectively prevent the opening. Further, the shutter 13 can be unlocked with one action, and the lock mechanism 27 can be configured with a simple mechanism.

  In addition, although the 2nd shell and the 1st shell were comprised by one component, you may form combining several components. 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 other photosensitive recording media.

It is a perspective view which shows the external appearance shape of the cartridge which implemented 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. It is a VV arrow sectional view in FIG. It is VI-VI arrow sectional drawing in FIG. 4A and 4B are cross-sectional views in the loading direction of the cartridge, where FIG. 5A is an overall view, FIG. 4A and 4B are cross-sectional views in a direction orthogonal to the cartridge loading direction, where FIG. 4A is a cross-sectional view with the shutter closed, and FIG. 4B is a cross-sectional view with the shutter opened. FIG. 9 is an enlarged view of a portion surrounded by a circle IX in FIG. 8. FIG. 9 is an enlarged view of a portion surrounded by a circle X in FIG. 8. 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 mechanism for opening a shutter.

Explanation of symbols

2 Cartridge (Photosensitive recording medium cartridge)
4 Recording disk (photosensitive recording medium, hologram recording medium)
4a Center of photosensitive recording medium 4b Recording surface of photosensitive recording medium 11 Cartridge body 13 Shutter 18 Internal opening (opening)
19 Internal opening (opening)
27 Lock mechanism 63 Operated member 63a Unlocking part 63b Locking part 56 Slider member 56d Release hole 79a Unlocking pin

Claims (9)

A disc-shaped photosensitive recording medium; a cartridge main body that rotatably accommodates the photosensitive recording medium; and an opening that exposes the center and recording surface of the photosensitive recording medium to the outside; and an outer side of the cartridge main body. A photosensitive recording medium comprising: a shutter that is incorporated to be movable between a closed position that closes the opening and an open position that opens the opening; and a lock mechanism that locks the shutter in the closed position. Cartridge for
The lock mechanism is a lock release that releases the lock of the shutter when pressed from the front to the back in the loading direction of the photosensitive recording medium cartridge and the engaging portion that engages with the shutter and locks the shutter. And is disposed inside the cartridge main body,
The shutter includes a release hole into which a lock release pin can be inserted at a position facing the lock release portion at a closed position of the shutter,
The photosensitive member is characterized in that the lock release portion is pressed to release the shutter lock by inserting the lock release pin into the release hole from the front to the rear in the loading direction of the photosensitive recording medium cartridge. Cartridge for recording media.   2. The photosensitive recording medium cartridge according to claim 1, wherein the release hole is formed so as to penetrate from a front surface in the loading direction of the shutter to a concave portion with which the locking portion is engaged.   The photosensitive recording medium cartridge according to claim 1, wherein the photosensitive recording medium is a hologram recording medium. A disc-shaped photosensitive recording medium; a cartridge main body that rotatably accommodates the photosensitive recording medium; and an opening that exposes the center and recording surface of the photosensitive recording medium to the outside; and an outer side of the cartridge main body. A shutter that is assembled and movable between a closed position that closes the opening and an open position that opens the opening; and a lock mechanism that locks the shutter in the closed position, and the locking mechanism A photosensitive portion having an engaging portion that engages with the shutter and locks the shutter, and an unlocking portion that unlocks the shutter when pressed from the front to the rear in the loading direction of the photosensitive recording medium cartridge. Drive device for recording / reproducing information on a recording medium cartridge,
An unlocking pin is provided at a position facing the unlocking part of the cartridge, and the unlocking part is pressed by inserting the unlocking pin into the releasing hole from the front to the back in the loading direction of the cartridge. A drive device characterized by the above.   The drive device according to claim 4, wherein a pair of the unlocking pins are provided at symmetrical positions with respect to the side surface on the insertion side of the cartridge main body.   6. The drive device according to claim 4, further comprising a positioning member that engages with a positioning groove provided on a side surface of the cartridge body.   The drive device according to claim 4, further comprising a shutter slide mechanism that opens and closes the shutter.   The drive device according to any one of claims 4 to 7, wherein the lock release pin is movable in a release direction.   6. The driving device according to claim 5, wherein one of the pair of lock release pins is inserted into the release hole, and the other is brought into contact with the cartridge main body to retract in the cartridge insertion direction. .

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