JP2007052833A - Cartridge for photosensitive recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cartridge for photosensitive recording medium in which it is obstructed that the cartridge is loaded erroneously to a recording and reproducing apparatus for recording medium being a different kind, thereby, damage given to recorded data and the recording and reproducing apparatus is prevented. <P>SOLUTION: A projection part 20c projected forward the front part of a loading direction C of the cartridge 20 is formed at the cartridge 20 housing the photosensitive recording medium 21 freely rotatively. When the cartridge 20 is inserted into a recording and reproducing apparatus 10 being not yet correspondent, the projection part 20c interferes to a stopper 13c of the recording and reproducing apparatus 10 and insertion is obstructed, thereby erroneous loading of the cartridge 20 is prevented. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a photosensitive recording medium cartridge, and more particularly to a photosensitive recording medium cartridge that can prevent the photosensitive recording medium cartridge from being erroneously loaded into a recording / reproducing apparatus of a different type of medium.

  Conventionally, various disk-shaped recording media having different recording principles have been used as recording media for recording various information. These disc-shaped recording media are generally housed in a cartridge case with a shutter in order to eliminate the influence of dust and foreign matter from the outside, contact by workers, and photosensitive recording media from light exposure. Has been. In addition, as a recording / reproducing apparatus that records data on a recording medium accommodated in a cartridge case or reproduces recorded data, a dedicated recording / reproducing apparatus is used for each recording medium.

  As such a recording medium, for example, a magneto-optical disk, a disk cassette accommodated in a cartridge case is known, and the disk cassette is loaded into a recording / reproducing apparatus to record and reproduce data (for example, Patent Document 1). reference). In the disk cassette DK of Patent Document 1, as shown in FIG. 10, a magneto-optical disk 2 is rotatably accommodated in a case 1 composed of an upper half member 1a and a lower half member 1b.

  The case 1 is formed with openings 3a and 3b that expose the signal recording area and chucking portion of the magneto-optical disk 2 to the outside. Outside the case 1, a shutter 4 for opening and closing the openings 3a and 3b is slidably disposed. The shutter 4 is fixed to a slider 5 slidably provided along the front end surface 1c of the case 1, and a protrusion 5a provided on the slider 5 is a shutter opening / closing pin of the recording / reproducing apparatus 10 (see FIG. 11). 11 is pressed and the shutter 4 moves to open and close the openings 3a and 3b. The front end face 1c is provided with a concave portion 7 that enters when the shutter opening / closing pin 11 of the recording / reproducing apparatus 10 displaces the shutter 4 to the open position.

  Such a disk cassette DK is loaded in the recording / reproducing apparatus 10 shown in FIG. 11, and the shutter 4 is opened, and data is recorded or reproduced. The shutter opening / closing mechanism E of the recording / reproducing apparatus 10 includes a cam hole 12 formed in the cassette holder 13 and a shutter opening / closing pin 11 that engages with the cam hole 12 and can move along the cam hole 12. .

  When the insertion of the disk cassette DK into the cassette holder 13 is started, the disk cassette DK is inserted while its both end faces 1d and 1e are in sliding contact with the side walls 13a and 13b of the cassette holder 13. As the disk cassette DK is inserted, the shutter opening / closing pin 11 is pushed by the case 1 and moves along the cam hole 12 while sliding on the front end surface 1c. Thereby, the shutter opening / closing pin 11 presses the protrusion 5 a of the slider 5 to open the shutter 4.

  When the shutter 4 reaches the open position, the shutter opening / closing pin 11 enters the recess 7 formed in the front end surface 1 c of the case 1, and the front end surface 1 c of the disk cassette DK is placed on a stopper 13 c provided at the front end of the cassette holder 13. The disk cassette DK reaches the loading position by contact. Then, the positioning pin 14 of the cassette holder 13 is fitted into the positioning groove 8 provided on the back surface of the case 1 so that the disk cassette DK is positioned at a predetermined position.

JP 7-254249 A

  Many disc-shaped recording media of different types have similar outer diameters and shapes due to problems such as handling. Therefore, the cartridge case that accommodates such a disc-shaped recording medium also tends to have many similar shapes and external dimensions. In this case, if the photosensitive recording medium cartridge containing the hologram recording medium is erroneously loaded into the recording / reproducing apparatus for a magneto-optical disk, the recording layer of the hologram recording medium may be damaged and the data may be destroyed. is there. In an extreme case, the magneto-optical disk recording / reproducing apparatus may be damaged.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to prevent a photosensitive recording medium cartridge from being erroneously loaded into a recording / reproducing apparatus for a recording medium of a different type, thereby recording. Another object of the present invention is to provide a photosensitive recording medium cartridge capable of preventing damage to the recorded data and the recording / reproducing apparatus.

The above object of the present invention is achieved by the following photosensitive recording medium cartridge.
(1) A cartridge main body having an opening that rotatably accommodates the photosensitive recording medium and exposes the center and recording surface of the photosensitive recording medium to the outside, and is attached to the outside of the cartridge main body to close the opening. A photosensitive recording medium cartridge having a shutter movably disposed between a closed position and an open position that opens the opening, wherein the cartridge main body or the shutter is loaded with the cartridge main body A cartridge for a photosensitive recording medium, wherein a protrusion protruding forward in the direction is formed.

  According to the photosensitive recording medium cartridge configured as described above, the cartridge main body or the shutter includes the protruding portion that protrudes forward in the loading direction of the cartridge main body, so that the photosensitive recording medium cartridge is other than the photosensitive recording medium. When the recording medium is inserted into a recording / reproducing apparatus (hereinafter referred to as an unsupported recording / reproducing apparatus), the protrusion comes into contact with the stopper of the recording / reproducing apparatus, and the photosensitive recording medium cartridge is finally finished. Prevent insertion to the position. Therefore, the photosensitive recording medium cartridge cannot be loaded at a predetermined loading position, and erroneous loading of the photosensitive recording medium cartridge is prevented.

  (2) 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 being attached to the outside of the cartridge main body to close the opening. A photosensitive recording medium cartridge having a shutter movably disposed between a closed position and an open position that opens the opening, wherein a side end surface of the cartridge body is orthogonal to the loading direction. A cartridge for a photosensitive recording medium, wherein a protrusion protruding in the direction is formed.

  According to the photosensitive recording medium cartridge configured as described above, the cartridge main body includes the protruding portion that protrudes in the direction perpendicular to the loading direction on the side end surface, so that the protruding portion interferes with the side wall of the recording / reproducing apparatus that is not compatible. Thus, the photosensitive recording medium cartridge is prevented from being inserted to the final position. Therefore, the photosensitive recording medium cartridge cannot be loaded at a predetermined loading position, and erroneous loading of the photosensitive recording medium cartridge is prevented.

  (3) The protrusion is formed asymmetrically with respect to a center line extending in the loading direction through the center of the cartridge body in a direction orthogonal to the loading direction, and detecting the presence or absence of the protrusion by detecting the presence or absence of the protrusion. The photosensitive recording medium cartridge according to (1) or (2) above, wherein the front and back of the photosensitive recording medium cartridge can be distinguished.

  According to the photosensitive recording medium cartridge having the above-described configuration, since the protrusion is formed asymmetrically with respect to the center line in the left-right direction of the cartridge body, the photosensitive recording medium cartridge is detected by detecting the position of the protrusion. Can be discriminated. Accordingly, it is possible to properly record or reproduce data by discriminating the front or back surface of the photosensitive recording medium capable of double-sided recording. In addition, in a photosensitive recording medium capable of single-side recording, it is possible to prevent the front and back from being erroneously loaded.

  (4) The photosensitive recording medium cartridge according to any one of (1) to (3), wherein the photosensitive recording medium is a hologram recording medium.

  According to the photosensitive recording medium cartridge configured as described above, erroneous loading of the photosensitive recording medium cartridge can be prevented and erroneous operation on the hologram recording medium can be prevented. Thereby, it is possible to protect the hologram recording medium and prevent the recorded data from being damaged. Further, the front and back surfaces of the hologram recording medium can be discriminated and properly recorded and reproduced.

  According to the present invention, it is possible to prevent a photosensitive recording medium cartridge from being erroneously loaded into a recording / reproducing apparatus for a different type of recording medium, thereby preventing damage to recorded data and the recording / reproducing apparatus. It is possible to provide a photosensitive recording medium cartridge that can be used.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
<First Embodiment>
FIG. 1 is a plan view showing the surface of a hologram recording medium cartridge (hereinafter abbreviated as “cartridge”) according to an embodiment of the present invention, and FIG. 2 is a plan view showing the back surface of the cartridge.

  As shown in FIGS. 1 and 2, the cartridge 20 is loaded from the direction of the arrow C to a hologram recording apparatus or the like that handles the cartridge. The recording disk 21 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 21. In order to perform recording on both recording surfaces of the recording disk 21, the cartridge 20 is set in the hologram recording apparatus with either the A surface 23a or the B surface 23b facing upward.

  The cartridge 20 includes a cartridge main body 23 in which a disk accommodating portion (not shown) is provided, and a shutter 24 that is slidably incorporated outside the cartridge main body 23. The cartridge body 23 is formed with substantially rectangular openings 25 and 26. These openings 25 and 26 are closed by the first shutter 24a and the second shutter 24b when the shutter 24 is in the closed position.

  When the shutter 24 moves toward the opening position in the direction of arrow D, the openings 25 and 26 provided in the cartridge body 23 are opened. Thereby, the central part 21a of the recording disk 21 accommodated in the disk accommodating part and the recording surface 21b are exposed to the outside. The shutter 24 is urged to the closed position by a built-in shutter spring.

  The cartridge body 23 includes a substantially plate-shaped first shell 27 and a second shell 28 joined to the first shell 27. The first shell 27 and the second shell 28 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. By superimposing the first shell 27 and the second shell 28, a disk accommodating portion for rotatably accommodating the recording disk 21 is formed. Since the side wall of the disc housing portion has a labyrinth-like light shielding structure formed by a plurality of light shielding walls, even if light or dust enters from the joint of the first shell 27 and the second shell 28, these There is no entry into the disc compartment.

  On the outer surfaces of the first shell 27 and the second shell 28, shutter sliding surfaces 27a and 28a offset inward at a depth greater than the thickness of the shutter 24 are formed so as to cover the entire operating range of the shutter 24. Has been.

  The shutter 24 is formed by bending a light-shielding thin plate into a substantially U shape. The shutter 24 is made of, for example, an aluminum alloy as a lightweight and strong material that can obtain light shielding properties, corrosion resistance, decorative properties, and workability. Note that the shutter 24 may be formed of plastic, but in order to ensure light shielding properties and slipperiness, plastics to which a light shielding material and a lubricant are added may be used.

  The shutter 24 is disposed opposite to the first shutter 24 a disposed opposite to the shutter sliding surface 27 a formed on the outer surface of the first shell 27 and the shutter sliding surface 28 a formed on the outer surface of the second shell 28. A second shutter 24b and a continuous portion 24c that continuously connects the first shutter 24a and the second shutter 24b are provided. The shutter 24 sandwiches both surfaces of the cartridge body 23 with the first shutter 24a and the second shutter 24b, and covers the front surface 20a of the cartridge 20 with the connecting portion 24c to the shutter sliding surfaces 27a and 28a of the cartridge body 23. It is attached.

  On the outer surfaces of the first shell 27 and the second shell 28, shutter sliding surfaces 27 a and 28 a are formed that are offset inward at a depth greater than the thickness of the shutter 24. Since the outside can be moved smoothly, generation of chips and the like due to movement can be suppressed. The shutter sliding surfaces 27a and 28a and the inner surface of the shutter 24 may be roughened in order to diffuse incident light.

  The shutter 24 is urged in the closing direction by a shutter spring (not shown). The shutter spring is composed of, for example, a coil spring, and both ends thereof are locked to the shutter 24 and the first shell 27.

  A protrusion 20 c is formed on the front surface 20 a of the cartridge 20 so as to protrude forward in the loading direction C of the cartridge 20. The protrusion 20c is at a position that is offset in a direction orthogonal to the loading direction C by a distance X1 from a center line CL that passes through the center of the cartridge body 23 in the direction orthogonal to the loading direction C and extends in the loading direction C. In other words, the protrusion 20c is asymmetric with respect to the center line CL. A positioning hole 22 is formed on the rear side of the cartridge 20 in the loading direction to engage the positioning pin of the recording / reproducing apparatus to position the cartridge 20 at the loading position.

  Next, loading of the cartridge of the present invention into the recording / reproducing apparatus will be described with reference to FIGS. FIG. 3 is a schematic plan view showing a state in which the cartridge shown in FIG. 1 is inserted into an unsupported recording / reproducing apparatus (recording / reproducing apparatus other than for the photosensitive recording medium), and FIG. 4 is a diagram showing photosensitive recording performed by the cartridge shown in FIG. FIG. 5 is a cross-sectional view taken along line VV in FIG. 4, showing a state loaded in a medium recording / reproducing apparatus (hereinafter referred to as a regular recording / reproducing apparatus).

  As shown in FIG. 3, when the cartridge 20 of the present invention is inserted in an unsupported recording / reproducing apparatus, for example, a magneto-optical disk recording / reproducing apparatus 10 shown in FIG. The portion 20c comes into contact with the stopper 13c of the recording / reproducing apparatus 10 to prevent further cartridge 20 from being inserted. That is, the cartridge 20 is blocked by the distance Y from the loading position, and the positioning pin 14 of the recording / reproducing apparatus 10 and the positioning hole 22 of the cartridge 20 are not fitted. Thereby, erroneous loading of the cartridge 20 is prevented. Even when the cartridge 20 is turned upside down and inserted, as shown by a broken line in the drawing, the protrusion 20c abuts against the stopper 13c of the recording / reproducing apparatus 10 to prevent erroneous loading of the cartridge 20.

  On the other hand, as shown in FIGS. 3 and 4, when the cartridge 20 of the present invention is inserted into the regular recording / reproducing apparatus 40 in the direction of the arrow C, the protrusion 20 c of the cartridge 20 is brought into contact with the stopper 41 of the recording / reproducing apparatus 40. By being provided and entering one of the escape holes 42a and 42b, the cartridge 20 is inserted to the loading position, and the positioning pin 43 is fitted into the positioning hole 22 to complete the loading of the cartridge 20.

  A pair of escape holes 42a and 42b are provided at positions symmetrical to the center line CL. This is because the protrusion 20c enters one of the relief holes 42a and 42b even if the front surface (A surface) 23a or the back surface (B surface) 23b of the cartridge 20 is inserted facing upward. This is to make it possible.

  A sensor 45 that can detect the presence or absence of the protrusion 20c inserted into the escape hole 42a is disposed in the vicinity of the one escape hole 42a. The sensor 45 is not particularly limited as long as it can detect the presence or absence of the protrusion 20c. For example, an optical sensor that receives light emitted from the light source 45a by the light receiving unit 45b can be used. When the light from the light source 45a is blocked by the protrusion 20c and is not detected by the light receiving unit 45b, the cartridge 20 is determined to be inserted with the A surface 23a facing upward, and when the light is detected by the light receiving unit 45b, It is determined that the B surface 23b is inserted upward.

  When a cartridge containing a photosensitive recording medium for single-sided recording is inserted, a detection unit (not shown) detects that the cartridge is a single-sided recording cartridge, and light from the light source 45a is detected by the light receiving unit 45b. When this happens, it is determined that the cartridge is inserted with the B-side 23b facing upward, and the user is alerted.

  As described above, according to the cartridge 20 of the present invention, when the cartridge 20 is inserted into an unsupported recording / reproducing apparatus 10 such as a magneto-optical disk recording / reproducing apparatus, the insertion is prevented and loading is prevented. The On the other hand, when it is inserted into the regular recording / reproducing apparatus 40, it can be normally loaded and the front and back of the cartridge 20 are discriminated by the sensor 45.

  FIG. 6 is a plan view of a modified cartridge. As shown in FIG. 6, the cartridge 30 of the modified example has a protrusion 24 d that protrudes forward in the loading direction C on the front surface of the shutter 24. The protrusion 24d is arranged offset by X2 in the left-right direction with respect to the center line CL. Others are the same as those of the cartridge 20 of the first embodiment shown in FIG. 1, and thus the same portions are denoted by the same reference numerals or corresponding reference numerals, and description thereof is omitted or simplified. Also in the cartridge 30 of the modified example, the protrusion 24d interferes with the stopper 13c, thereby preventing insertion into the recording / reproducing apparatus 10 that does not support the cartridge 30. On the other hand, insertion into the regular recording / reproducing apparatus 40 is allowed, and the front and back surfaces 23a and 23b can be discriminated.

Second Embodiment
Next, a cartridge according to a second embodiment of the present invention will be described with reference to FIGS. 7 is a plan view of a cartridge according to the second embodiment of the present invention, FIG. 8 is a schematic plan view showing a state in which the cartridge is inserted into an unsupported recording / reproducing apparatus, and FIG. It is a longitudinal cross-sectional view which shows the state performed. Since the cartridge of the second embodiment is the same except that the position of the protrusion is different from that of the cartridge of the first embodiment, the same parts are denoted by the same reference numerals or the same reference numerals, and description thereof is omitted or simplified. .

  As shown in FIG. 7, in the cartridge 50 of the second embodiment, a protrusion 50 d is formed on one side end surface 50 b of the cartridge 50 so as to protrude in a direction perpendicular to the loading direction C. As shown in FIG. 8, when such a cartridge 50 is inserted into an unsupported recording / reproducing apparatus 10 (see FIG. 11), the protrusion 50d interferes with the side wall 13a of the recording / reproducing apparatus 10 to prevent the insertion. Erroneous loading is prevented. When the B surface 23b is inserted upward, the projection 50d interferes with the side wall 13b and is prevented from being inserted as shown by a broken line in the drawing.

  On the other hand, as shown in FIG. 9, when the cartridge 50 is inserted into the regular recording / reproducing apparatus 40, the protrusion 50 d has grooves 46 a formed in the side walls 40 a, 40 b of the recording / reproducing apparatus 40 in the insertion direction of the cartridge 50. Or, since it is fitted to 46b, it is inserted without any trouble. On one side wall 40a, 40b, a sensor 45 including a light source 45a and a light receiving unit 45b is disposed at a position corresponding to the protrusion 50d of the loaded cartridge 50. Therefore, the front and back of the cartridge 20 are discriminated in the same manner as the cartridge 20 of the first embodiment already described with reference to FIGS.

  In each of the above embodiments, the cartridge having no shutter lock mechanism has been described. However, a lock mechanism for locking the shutter in the closed position may be provided. In this case, since the shutter is not inadvertently opened, inadvertent exposure of the photosensitive recording medium is prevented, which is preferable. In order to further improve the light shielding performance, a light shielding plate can be further disposed outside the shutter.

1 to 5 relate to a first embodiment of the present invention, and FIG. 1 is a plan view showing the surface of a hologram recording medium cartridge according to an embodiment of the present invention. It is a top view which shows the back surface of the cartridge shown in FIG. FIG. 2 is a schematic plan view showing a state where the cartridge shown in FIG. 1 is inserted into an incompatible recording / reproducing apparatus (recording / reproducing apparatus other than for a photosensitive recording medium). FIG. 2 is a schematic plan view showing a state where the cartridge shown in FIG. 1 is loaded in a regular recording / reproducing apparatus (recording / reproducing apparatus for photosensitive recording medium). It is a VV arrow sectional view in FIG. It is a top view of the cartridge of a modification. 7 to 9 relate to a second embodiment of the present invention, and FIG. 7 is a plan view of the cartridge. It is a schematic plan view which shows the state in which a cartridge is inserted in the recording / reproducing apparatus incompatible. It is a longitudinal cross-sectional view which shows the state in which a cartridge is inserted in a regular recording / reproducing apparatus. It is a perspective view of the conventional disc cassette. It is a disassembled perspective view of the conventional recording / reproducing apparatus.

Explanation of symbols

20 cartridge (photosensitive recording medium cartridge)
20c Protrusion 21 Recording disk (photosensitive recording medium, hologram recording medium)
21a Central portion 21b of photosensitive recording medium Recording surface 23 of photosensitive recording medium Cartridge body 23a A surface (front surface)
23b B side (back side)
24 Shutter 24d Projection 25 Opening 26 Opening 30 Cartridge (Cartridge for Photosensitive Recording Medium)
50 cartridge (cartridge for photosensitive recording medium)
50b End face 50d Projection CL Center line

Claims (4)

A cartridge body having an opening for rotatably accommodating the photosensitive recording medium and exposing the center and the recording surface of the photosensitive recording medium to the outside; and a closed position attached to the outside of the cartridge body to close the opening. A photosensitive recording medium cartridge having a shutter movably disposed between an opening position for opening the opening,
A cartridge for a photosensitive recording medium, wherein the cartridge main body or the shutter is formed with a protrusion protruding forward in the loading direction of the cartridge main body. A cartridge body having an opening for rotatably accommodating the photosensitive recording medium and exposing the center and the recording surface of the photosensitive recording medium to the outside; and a closed position attached to the outside of the cartridge body to close the opening. A photosensitive recording medium cartridge having a shutter movably disposed between an opening position for opening the opening,
A cartridge for a photosensitive recording medium, wherein a protrusion projecting in a direction orthogonal to the loading direction is formed on a side end surface of the cartridge body.   The protrusion is formed asymmetrically with respect to a center line passing through the center of the cartridge body in the direction orthogonal to the loading direction and extending in the loading direction, and detecting the presence or absence of the protruding portion makes the photosensitive recording medium The photosensitive recording medium cartridge according to claim 1, wherein the front and back sides of the cartridge can be distinguished. The photosensitive recording medium cartridge according to any one of claims 1 to 3, wherein the photosensitive recording medium is a hologram recording medium.

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