JP2007052848A - Cartridge for photosensitive recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cartridge for photosensitive recording medium in which a shutter is improved to improve light shielding effect of a photosensitive recording medium such as a hologram recording medium. <P>SOLUTION: The cartridge is provided with a first shell formed in an almost plate shape, a second shell jointed so as to superpose on the first shell, and a shutter opening and closing an opening provided at at least one side of the first shell and the second shell, the disk type photosensitive recording medium is housed freely rotatably in the cartridge main body formed by combining the first shell and the second shell, electrical conductivity of the shutter is in a range of 2IACS% to 50IACS%, transmittance of the shutter is in a range of 4×10<SP>-8</SP>to 4×10<SP>-6</SP>%, Young's modulus of the shutter is in a range of 7,000kg/mm<SP>2</SP>to 21,000kg/mm<SP>2</SP>, hardness is in a range of 50Hv to 200Hv. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a photosensitive recording medium cartridge that accommodates a photosensitive recording medium.

  Currently, as shown in Patent Document 1 below, a hologram recording medium for recording data by hologram has been proposed. A hologram recording medium is a photosensitive recording medium in which a hologram recording layer made of a photosensitive material is laminated on a disk-shaped support, and by recording data in multiple layers at once as interference fringes of laser light, A data recording capacity larger than that of a conventional DVD can be obtained. In order to prevent the hologram recording layer from being exposed to light, the hologram recording medium is handled in a state of being housed in a cartridge having a light shielding function, as shown in Patent Document 2 below.

JP 2004-029476 A JP 2003-317422 A

  As a cartridge for storing a disk-shaped recording medium, generally, an upper shell and a lower shell that hold the recording medium so as to be sandwiched in a rotatable state, and one of the recording media in the upper shell and the lower shell. A configuration including an opening formed so as to expose the portion to the outside and a shutter for opening and closing the opening is conceivable. However, since the shutter is configured so that the opening can be freely opened and closed, a substantially slight gap is formed between the shutter and the upper shell and the lower shell, and light enters the cartridge from this gap, and the hologram recording medium There is a concern that the hologram recording layer may be exposed to the incident light.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a photosensitive recording medium cartridge having an improved shutter in order to improve the light shielding effect of a photosensitive recording medium such as a hologram recording medium. is there.

The object of the present invention is to provide at least one of a first shell formed in a substantially plate shape, a second shell joined so as to overlap the first shell, and the first shell and the second shell. A cartridge for photosensitive recording medium, comprising a shutter provided to open and close an opening provided on one side, wherein a cartridge-like photosensitive recording medium is rotatably accommodated in a cartridge body formed by combining the first shell and the second shell. The conductivity of the shutter is in the range of 2 IACS% to 50 IACS%, the transmittance is in the range of 4 × 10 ⁻⁸ to 4 × 10 ⁻⁶ %, and the Young's modulus is 7000 kg / mm ² to 21000 kg / It is achieved by a photosensitive recording medium cartridge characterized by having a range of mm ² and a hardness of 50 Hv to 200 Hv.

  In the cartridge of the present invention, the shutter is preferably aluminum or SUS.

  The photosensitive recording medium cartridge of the present invention can improve the light shielding effect of a photosensitive recording medium such as a hologram recording medium.

  Embodiments of a hologram recording medium cartridge (hereinafter also referred to as a cartridge) according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is an overall perspective view showing an external shape when the cartridge is viewed from one side, and FIG. 2 is an overall perspective view showing an external shape when the cartridge is viewed from the other side. FIG. 3 is an overall perspective view showing a state where the shutter of the cartridge of FIG. 1 is opened. FIG. 4 is a cross-sectional view in a direction perpendicular to the loading direction A of the cartridge.

  The cartridge 10 includes a cartridge main body 11. The cartridge main body 11 includes a first shell 12 formed in a substantially plate shape and a second shell 13 joined so as to overlap the first shell 12. Inside the cartridge body 11, there is provided a disk housing portion 14 that is partitioned between the first shell 12 and the second shell 13 that are overlaid. In the present embodiment, in FIG. 1, the upper shell of the cartridge body 11 is the first shell 12, and the lower shell is the second shell 13. However, the lower shell is the first shell 12, The upper shell may be the second shell 13.

  A disk-shaped hologram recording medium (hereinafter referred to as a recording disk) 40 is rotatably accommodated in the disk accommodating portion 14. The recording disk 40 is handled in a state of being accommodated in the cartridge main body 11.

  The recording disk 40 is a photosensitive recording medium that is formed in a disk shape with a hole in the center, and is provided with a hologram recording layer made of a photosensitive material 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 40.

  The first shell 12 and the second shell 13 of the cartridge main body 11 are formed with openings 17 and 18 for exposing the recording disk 40 accommodated in the disk accommodating portion 14 to the outside.

  A shutter 20 that opens and closes the openings 17 and 18 is attached to the cartridge body 11. The openings 17 and 18 are opened by moving the shutter 20 in the arrow B direction to the open position. Further, by moving the shutter 20 in the arrow C direction to the closed position, the openings 17 and 18 are shielded by the shutter 20. The shutter 20 is urged in the direction of arrow C on the closed position side by a spring (not shown). The shutter 20 is locked at the closed position by lock mechanisms 30 formed on both surfaces of the cartridge body 11. Thus, the cartridge 10 prevents the openings 17 and 18 from being opened due to the movement of the shutter 20 due to vibration or impact on the cartridge body 11.

  The cartridge 10 is inserted from the loading direction A into a cartridge slot provided in a recording device that records data on the recording disk 40 and a reproducing device that reads data from the recording disk 40. When the cartridge 10 is loaded in the recording device or the reproducing device, the cartridge 10 is positioned by the positioning holes 15 provided on both surfaces of the cartridge main body 11, the shutter 20 is moved to the open position, and the openings 17 and 18 are opened.

  For example, when the cartridge 10 is loaded in the recording apparatus or the reproducing apparatus in the state shown in FIG. 1, the pickup portion of the apparatus is located in the cartridge main body 11 from the opening 18 on the second shell 13 side located on the lower surface of the cartridge main body 11. The data is recorded on or reproduced from the hologram recording layer on the lower surface of the recording disk 40. As shown in FIG. 2, when the cartridge 10 is turned upside down and loaded into the apparatus, a pickup unit is inserted from the opening 17 on the first shell 12 side arranged on the lower surface, and the cartridge 10 in FIG. Data is recorded or reproduced on the hologram recording layer on the upper surface of the recording disk 40.

  Inside the recording device and the reproducing device, a lock release mechanism that releases the lock mechanism 30 of the cartridge 10 and a shutter opening / closing mechanism that moves the shutter 20 between a closed position and an open position are incorporated. The lock release mechanism releases the lock mechanism 30 of the shutter 20, the shutter opening / closing mechanism inserts a drive pin into an insertion hole 21a formed in the side surface of the shutter 20, and the pin is driven in the direction of arrow B to release the shutter. 20 is moved to the open position. Thus, as shown in FIG. 3, the openings 17 and 18 on both sides of the cartridge 10 are opened.

  The first shell 12 and the second shell 13 are formed 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, but it is preferable to add, for example, 0.01 to 5.00% by weight depending on the light-shielding substance to be used. Further, 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 appears, but if it exceeds 2.00% by weight, the physical strength decreases.

  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 20 can be reduced. Further, it is possible to suppress the generation of shavings when the recording disk 40 and the inner wall of the cartridge main body 11 come into contact with each other during transportation. Furthermore, it is easy to handle and insert into a device such as a recording device or a playback device. Moreover, since fluidity | liquidity improves, the kneadability at the time of shaping | molding, workability, such as injection molding, etc. improve.

  The addition amount of the silicone lubricant is preferably 0.1 to 3.0% by weight. This is less effective at 0.1% by weight or less, and at 3.0% by weight or more, the fluidity becomes too good, and kneading and molding cause slippage between the screw and the resin, resulting in deterioration of workability and the product surface. This is because it may bleed out and adhere to the recording disk 40 or the user's hand, causing 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%.

FIG. 5 is an overall perspective view showing the shutter of the cartridge according to the present invention.
The shutter 20 includes a slide plate portion 21 that is slidably supported by the cartridge body 20 and a pair of shielding plate portions 22 and 23 that are vertically erected from the slide plate portion 21 and arranged in parallel to each other. ing. Further, at least one of the pair of shielding plate portions 22 and 23 is formed with a claw portion 24 that engages with a lock lever of the lock mechanism 30 when the shutter is locked in the closed position. As shown in FIG. 1, the shutter 20 is attached to the cartridge main body 11 with the first shell 12 and the second shell 13 inserted between the shielding members 22 and 23. At this time, a part of a spring (not shown) provided in the cartridge main body 11 is locked to the surface of the slide plate portion 21 on the cartridge main body 11 side, so that the shutter 20 is biased to the closed position side. Held in. The shielding plates 22 and 23 are substantially plate-like members each having a substantially rectangular surface, and the surfaces are formed on the first shell 12 and the second shell 13 with the shutter 20 moved to the closed position. The openings 17 and 18 are formed in a shape and dimensions that completely cover the openings 17 and 18.

  Bending portions 22a and 23a are formed at the ends of the shutter 20, specifically, at the one long side end (the long side end on the arrow B direction side in the drawing) of each shielding plate portion 22 and 23. . When the shielding plate portions 22 and 23 are made of a metal material or the like, the bent portions 22a and 23a may be formed by bending their long side end portions by a predetermined angle. Further, when the shielding plates 22 and 23 are made of a resin material such as plastic, they are integrally formed with a mold having a cavity having a shape in which the shielding plates 22 and 23 and the bent portions 22a and 23a are formed in advance. May be.

4A shows a state where the shutter 20 is in the closed position, and FIG. 4B shows a state where the shutter 20 is in the open position.
As shown in FIG. 4A, slits 31 and 32 are formed on the outer surfaces of the first shell 12 and the second shell 13, respectively. When the shutter 20 is moved to the closed position, the side edges 22 b and 23 b in the closing direction of the shielding plate portions 22 and 23 of the shutter 20 are accommodated in the slits 31 and 32. Further, the bent portions 22 a and 23 a formed on the opposite sides of the shielding plate portions 22 and 23 in the closing direction come into contact with the cartridge body 11.

FIG. 6 is an overall perspective view including a partial perspective view of the cartridge with the shutter in the closed position.
As shown in FIG. 6, the first shell 12 is formed with a protruding portion 25 that contacts the bent portion 22 a of the shutter 20 in the closed position. Further, as shown in FIG. 4A, similarly, the second shell 13 is formed with a protruding portion 26 that comes into contact with the bent portion 23a of the shutter 20 in the closed position.

7 is an enlarged cross-sectional view showing a part indicated by an arrow X in FIG. 4, FIG. 7 (a) shows a state in which the shutter is moved to the closed position, and FIG. 7 (b) shows a state in which the shutter is in the closed position. Shows the state.
As shown in FIG. 7A, in order to move the shutter 20 to the closed position, the shutter 20 is slid on the outer surface of the first shell 12 until the bent portion 22a contacts the protruding portion 25 of the first shell 12. Move. As shown in FIG. 7B, the surface of the bent portion 22a on the first shell 12 side and the inclined surface 25a formed on the protruding portion 25 are in surface contact with the shutter 20 in the closed position. .

  Here, the bent portion 22a has an angle a1 with respect to the surface direction of the surface that shields the opening 17 in the shielding plate portion, and the inclined surface 25a of the protruding portion 25 when the end portion is inclined toward the first shell 12 side. Is inclined by an angle a2 with respect to the outer surface of the first shell 12, it is preferable that a1 ≧ a2. If the inclination angle a1 of the bent portion 22a is larger than the inclination angle a2 of the inclined surface 25a of the protruding portion, the bent portion 22 is elastically deformed with the bent portion 22 in contact with the protruding portion 25, and a predetermined restoring force is obtained. It comes to press on the protrusion part 25, having it. In FIG. 7, the configuration in which the first shell 12 is provided with the protruding portion 25 and the bent portion 22 is in contact with the protruding portion 25 has been described. It is set as the structure which makes the bending part 23 contact | abut. Here, the shutter 20 is preferably configured to be elastically deformed by pressing the bent portions 22 and 23 against the projecting portions 25 and 26 with a predetermined pressure.

  In the cartridge 10 of the present invention, when the openings 17 and 18 of the cartridge main body 11 are closed by the shutter 20, the bent portions 22 a and 23 a formed at the end of the shutter 20 abut against a part of the cartridge main body 11. Then, since no gap is generated between the bent portions 22a and 23a of the shutter 20 and the cartridge main body 11, it is avoided that light enters from between the bent portions 22a and 23a of the shutter 20 and the cartridge main body 11. Can do. Further, since the bent portions 22a and 23a are in contact with the cartridge body 11 with the shutter 20 closed, the light shielding effect can be improved without hindering the opening and closing of the shutter 20.

  As in this embodiment, the cartridge 10 has an opening 17 in the first shell 12 and the second shell 13 with the shutter 20 closed, as shown in FIGS. 4 (a), 6 and 7 (b). , 18 is preferably formed with protrusions 25 and 26 formed so as to be in contact with the bent portions 22a and 23a. In this way, when the openings 17 and 18 are closed by the shutter 20, the bent portions 22a and 23a of the shutter 20 come into contact with the protruding portions 25 and 26 formed on the cartridge body 11 side. Since no gap is generated between the bent portions 22a and 23a of the shutter 20 and the protruding portion 25 of the cartridge main body 11, it is possible to avoid the entry of light. Further, as shown in FIGS. 4B and 7A, the bent portions 22a and 23a are brought into contact with the projecting portions 25 and 26 so that the bent portions 22a and 23a are brought into contact with the first shell and the second shell. It can be formed at a position where it does not contact or slide on the surface of the shell, and it is possible to prevent the bent portions 22a and 23a and the cartridge body 11 from rubbing when the shutter 20 is opened and closed.

  As in the cartridge 10 of the present embodiment, the protruding portion 25 is formed with an inclined surface 25a that makes surface contact with the contact surface of the bent portions 22a and 23a that contacts the cartridge body 11 with the shutter 20 closed. With this configuration, when the shutter 20 is closed, the bent portions 22a and 23a and the projecting portions 25 and 26 come into surface contact with each other, so that, for example, only the edges of the bent portions 22a and 23a are attached to the cartridge body 11. Compared to the configuration in which the contact is made linearly, it is possible to more reliably prevent the occurrence of a gap.

Furthermore, the bent portion 22a is preferably made of a metal material or a resin material that is elastically deformed by contact with the cartridge body. In this way, when the shutter 20 is closed, the bent portions 22a and 23a are pressed against the cartridge main body 11 with a predetermined pressure, so that the bent portions 22a and 23a are elastically deformed and are restored by elasticity. The contact pressure between the bent portions 22a and 23a and the cartridge main body is increased by the force. For this reason, the bent portions 22a and 23a and the cartridge main body 11 side are brought into close contact with each other due to the elastic deformation contact pressure of the bent portions 22a and 23a.
In the cartridge 10 according to the present invention, the configuration of the shutter 20 is not limited to the above, and can be changed as appropriate within a range where the light shielding effect and the dustproof effect can be achieved.

The photosensitive recording medium cartridge 10 according to the present invention has a shutter 20 having a conductivity of 2 IACS% to 50 IACS% and a transmittance of 4 × 10 ⁻⁸ to 4 × 10 ⁻⁶ %. the rate is in the range of 7000 kg / mm ² of 21000kg / mm ^2, hardness is configured to be in the range of 200Hv from 50 Hv. As a constituent material of the shutter 20, it is preferable to use aluminum or SUS.

In addition, this invention is not limited to embodiment mentioned above, A suitable deformation | transformation, improvement, etc. are possible.
For example, a cartridge containing a recording disk capable of recording on both sides is taken out as an example, but it may correspond to a 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 whole perspective view which shows the external appearance shape in the state which looked at the cartridge from one side. It is a whole perspective view which shows the external appearance shape in the state which looked at the cartridge from the other. FIG. 2 is an overall perspective view showing a state where a shutter of the cartridge of FIG. 1 is opened. FIGS. 4A and 4B are cross-sectional views in a direction perpendicular to the cartridge loading direction A. FIG. 4A shows a state where the shutter 20 is in the closed position, and FIG. 4B shows a state where the shutter 20 is in the open position. ing. It is a whole perspective view which shows the shutter of a cartridge. It is a whole perspective view including a partial perspective view of the cartridge in a state where the shutter is in the closed position. FIGS. 7A and 7B are enlarged cross-sectional views showing a part indicated by an arrow X in FIG. 4. FIG. 7A shows a state in which the shutter is moved to the closed position, and FIG. 7B shows a state in which the shutter is in the closed position. Show.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Cartridge 11 Cartridge body 12 1st shell 13 2nd shell 17, 18 Opening 20 Shutter 22, 23 Shielding plate part 22a, 23a Bending part 25, 26 Protrusion part 40 Recording disk (hologram recording medium)

Claims (2)

An opening provided in at least one of the first shell formed in a substantially plate shape, the second shell joined so as to overlap the first shell, and the first shell and the second shell; A cartridge for photosensitive recording medium, comprising: a shutter that opens and closes; and a disc-shaped photosensitive recording medium rotatably accommodated in a cartridge body that is a combination of the first shell and the second shell,
The ranges conductivity of 2IACS% ~50IACS% of the shutter is in the range transmittance of ^{4 × 10 -8 ~4 × 10 -6} %, range Young's modulus from 7000 kg / mm ² of 21000kg / mm ² A photosensitive recording medium cartridge having a hardness in the range of 50 Hv to 200 Hv.   2. The photosensitive recording medium cartridge according to claim 1, wherein the shutter is made of aluminum or SUS.

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