JP2007095198A - Cartridge for photosensitive recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cartridge wherein the content recorded in a photosensitive recording medium can be easily grasped while secrecy is heightened so that content information cannot be easily read by a third person. <P>SOLUTION: In the cartridge 1A for the photosensitive recording medium provided with a disk-like hologram recording medium 3, a cartridge main body 2A rotatably housing the hologram recording medium 3 and having an aperture 21a exposing a part of the hologram recording medium 3 to an external part and a shutter 4 formed by using a light shielding material and opening and closing the aperture 21a of the cartridge main body 2A, an RFID (Radio Frequency Identification) tag 9 by which information of a summary or an index for an information content recorded in the hologram recording medium 3 can be read out from an external part by using a tag reader via an induction electromagnetic field or an electromagnetic wave is provided at a part of a region of cartridge main body 2A exposed to the external part when the shutter 4 is opened. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a cartridge that accommodates a photosensitive recording medium therein, and more particularly, to a cartridge for a photosensitive recording medium that can confirm the recording contents of the photosensitive recording medium accommodated therein.

  Various optical discs have been developed in which various types of information are recorded on a disc-shaped recording medium. In such an optical disc, for example, a label provided with a memo field or the like is often affixed on the outer surface of a casing or the like in order to make it easy to grasp the recorded contents.

Therefore, in this memo column, individual information (hereinafter referred to as “content information”) such as a title, summary, or index, and also an identification number (ID), for example, can be described for the contents recorded on the optical disc. For example, the content information can be easily confirmed without having to bother reproducing the optical disc with a reproducing apparatus. In particular, when handling a large number of optical discs, it is difficult to perform operations such as searching for an optical disc on which desired information is recorded and organizing the discs for each field.
On the other hand, important confidential information may be recorded on the optical disc. In this case, if the content information is written in characters on the label, anyone other than the user can read the content information.

  Therefore, in order to make it easy to grasp the contents of a large number of optical discs or to organize them by field, and to prevent others from reading easily, for example, radio waves and induction electromagnetic fields are used. An RFID (Radio Frequency Identification) tag that reads content information as an intermediary has been proposed (see, for example, Patent Document 1).

Recently, a hologram recording medium for recording data using holograms has also been proposed (see, for example, Patent Document 2). For this reason, even for the content recorded on this hologram recording medium, the genuine owner of the hologram recording medium can easily grasp the contents information, roughly grasp the contents of a large number of optical disks, and compile them by field There is a demand for development of a means that can easily maintain such confidentiality so that a third party cannot easily grasp such work.
JP 2001-319380 A JP 2004-029476 A

  The present invention has been made in view of the above circumstances, and its purpose is to read content information relating to a photosensitive recording medium and to easily grasp the contents recorded on the photosensitive recording medium. The third party is to provide a cartridge with improved confidentiality so that the content information cannot be easily read.

The above object of the present invention is achieved by the following configurations.
(1) A disc-shaped photosensitive recording medium and a light-shielding property in which the photosensitive recording medium is rotatably accommodated and an inner opening is provided to expose the center and the recording surface of the photosensitive recording medium to the outside. A cartridge body having a light shielding property, and a shutter that opens and closes the opening of the cartridge body, and a non-contact IC tag provided in an area exposed to the outside when the shutter is opened in the cartridge body A photosensitive recording medium cartridge comprising:
(2) A light shielding plate that has an outer opening at a position opposite to the inner opening and the outer opening of the shutter and covers the movement range of the shutter other than the opening and shields the light from the shutter. The cartridge for photosensitive recording media according to the above (1), wherein a non-contact IC tag is provided in the area.

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

  The cartridge body includes a plate-shaped first shell and a second shell that is overlapped and welded to the first shell, and the first shell and the second shell are formed of the same or similar thermoplastic plastic. The other components including the shutter are preferably formed of a material different from that of the first shell and the second shell. Thereby, it can prevent that the 1st shell, the 2nd shell, and other components will weld at the time of welding with the 1st shell and the 2nd shell.

  In the cartridge, it is preferable that 0.01 to 5.00% by weight of a light-shielding substance is added to the plastic used for molding the first shell and the second shell, and the shutter. Moreover, when using carbon black for the plastic used for the molding of the first shell, the second shell, and the shutter, it is preferable that 0.01 to 2.00% by weight of carbon black is added. In this way, the light transmittance between the cartridge main body and the shutter can be reduced, and the light shielding performance of the cartridge can be improved.

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

  The cartridge can be applied to a hologram recording medium as the photosensitive recording medium. With the above configuration, the hologram recording medium can be carried without being exposed to light, and can be used in recording apparatuses having different installation positions.

  According to the present invention, by reading the content information related to the content recorded on the photosensitive recording medium, it is possible for the user or the like to grasp the content recorded on the photosensitive recording medium, but not to the third party. In this way, a cartridge with enhanced confidentiality can be provided.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a hologram recording medium cartridge (hereinafter referred to as “cartridge”) according to the present invention will be described below in detail with reference to the accompanying drawings.

[First Embodiment]
FIG. 1 is an overall perspective view showing the external shape of the cartridge 1A as viewed from one side, and FIG. 2 is an overall perspective view showing a state in which the shutter 4 of the cartridge 1A in FIG. 1 is opened. 3 is an exploded perspective view showing the cartridge main body 2A, the disc-shaped photosensitive recording medium 3 and the shutter 4 constituting the cartridge 1A. FIGS. 4A and 4B are cross-sectional views taken along the line IVa-IVa in FIG. FIG. 4 is a sectional view taken along line IVb-IVb in FIG. 2.

  The cartridge 1A accommodates a disc-shaped photosensitive recording medium, that is, a hologram recording medium 3 (hereinafter referred to as “recording disk”), and has a cartridge body 2A having an opening for exposing a part of the recording disk 3 to the outside. And a shutter 4 that is made of a light-shielding material and opens and closes the opening of the cartridge main body 2A.

  The cartridge body 2A includes a first shell 2a formed in a substantially plate shape and a substantially plate-like second shell 2b joined so as to overlap the first shell 2a. Note that the first shell 2a and the second shell 2b are substances that avoid a radio wave absorbing material or a metal material having an electromagnetic shielding action which becomes an obstacle when reading and writing the RFID tag 9 described later. Moreover, it is made of a light shielding material. In this embodiment, for example, it is formed by injection molding using an appropriate thermoplastic material to which a light-shielding substance and a lubricant are added.

  Inside the cartridge main body 2A, a disk accommodating portion 20 (see FIG. 4) is provided between the first shell 2a and the second shell 2b to be overlapped. The recording disk 3 is rotatably accommodated in the disk accommodating portion 20. The recording disk 3 is handled in a state of being accommodated in the cartridge main body 2A.

  The recording disk 3 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 to constitute a photosensitive recording medium. On the hologram recording layer, for example, data is multilayer-recorded as interference fringes of laser light by laser light in a wavelength region of green 532 nm to blue 405 nm. A reinforcing material may be added to the hole of the recording disk 3.

  The first shell 2a and the second shell 2b of the cartridge main body 2A are penetrated by substantially tongue-shaped openings 21a and 21b, respectively, for exposing a part of the recording disk 3 accommodated in the disk accommodating portion 20 to the outside. It is drilled at.

  Further, the first shell 2a and the second shell 2b are formed with opening walls 22a and 22b that stand up so as to surround the openings 21a and 21b, respectively. Of these, the opening walls of the first shell 2a are formed. An RFID tag 9 which is a non-contact IC tag is attached to 22a.

  The shutter 4 is slidably attached to the cartridge main body 2A, and as described above, when reading and writing information recorded on the optical disc 3, and when reading the RFID tag 9, etc. Openings 21a and 21b are opened. The shutter 4 is moved in the direction of arrow C shown in FIG. 1 to the closed position, so that the openings 21 a and 21 b are shielded by the shutter 4. Further, the shutter 4 is moved to the open position in the direction of arrow B shown in FIG. 2 to open the openings 21a and 21b.

  The shutter 4 opens the openings 21a and 21b when reading the RFID tag 9 and does not become an obstacle to the reading. Therefore, the shutter 4 is formed of a light-shielding material such as metal. . The shutter 4 is a light-shielding material, which is a material that avoids radio wave-absorbing materials and metal materials having electromagnetic shielding action, for example, a suitable heat in which a light-shielding material and a lubricant are added. It may be formed by injection molding using a plastic material or the like.

  The shutter 4 is urged in the direction of arrow C, which is the closing direction, by a spring (not shown). Usually, the shutter 4 is locked at the closed position by a lock mechanism 23 formed on the cartridge main body 2A. Thus, the cartridge 1A prevents the openings 21a and 21b from being unnecessarily opened due to the movement of the shutter 4 due to vibration or impact on the cartridge body 2A.

  The RFID tag 9 is very thin and small, and can be installed anywhere within a distance where radio waves and induction electromagnetic fields act. For this reason, in the case of this embodiment, as described above, the RFID tag 9 which is a kind of IC tag is attached to the opening wall 22a of the first shell 2a. As shown in FIG. 5A, the RFID tag 9 includes an antenna 9a formed of a coil and an IC chip 9b including a memory, and is contactless by radio waves (or induction electromagnetic fields) by a tag writer. The stored information is configured to be read by a tag reader. The antenna 9a and the IC chip 9b are mounted on an insulating substrate, and both surfaces thereof are sandwiched (or molded) with a thin film.

  In the case of this embodiment, a tag reader or tag writer having a configuration in which an antenna or the like is attached to a recording device for the optical disc 3 or a pickup unit of a reproducing device is used. In addition to such a configuration, the RFID tag 9 may be read and written by a dedicated tag reader or tag writer. In this case, an unlocking mechanism provided in the cartridge main body 2A or an opening / closing mechanism of the shutter 4 is used. It is necessary to have.

  The antenna 9a has a substantially rectangular shape or a circular shape and is provided by being wound a plurality of times in a spiral shape, and both ends thereof are connected to the IC chip 9b. On the other hand, as shown in FIG. 5B, the IC chip 9b includes a receiving unit 91 whose input is connected to the antenna 9a, a transmitting unit 92 whose output is connected to the antenna 9a, and an input which is the output of the receiving unit 91. , A control unit 93 whose output is connected to the input of the transmission unit, a memory 94 connected to the control unit 93, an input is connected to the antenna 9a, and an output is connected to the input of the control unit 93 The power supply unit 95 is provided.

  After recording various types of information on the recording disk 3 in the memory 94, content information about various types of information recorded on the recording disk 3, such as titles, indexes, or summaries, using a tag writer or tag reader / writer, Stores an identification number (ID) and the like (along with the recording date and time). Accordingly, the content information about various information recorded in the recording disk 3 stored in the memory 94, that is, the title, summary, or index, and the identification number (ID), etc. are obtained by the tag reader or tag reader / writer. Thereafter, it can be read at any time by a display unit not shown. In this embodiment, since the tag reader or tag (reader) writer is provided in the recording device or the reproducing device of the recording disk 3, the display unit is also used as the display unit provided in the recording device or the reproducing device. Yes.

  The cartridge 1A configured as described above is inserted from the loading direction A into a cartridge slot provided in a recording device (not shown) that records data on the recording disk 3 and a playback device (not shown) that reads data from the recording disk 3. Is done.

  For example, when the cartridge 1A is loaded into a recording apparatus or reproducing apparatus (not shown) with the shutter 4 shown in FIG. 1 closed, the pickup unit of the recording apparatus or reproducing apparatus is positioned on the lower surface of the cartridge body 2A. Is inserted into the cartridge body 2A from the opening 21a on the first shell 2a side, and data is recorded or reproduced on the hologram recording layer on the lower surface of the recording disk 3. The same operation is performed when reading the RFID tag 9.

  Although not shown, the recording device and the playback device incorporate a lock release mechanism that releases the lock mechanism 23 of the cartridge 1A and a shutter opening / closing mechanism that moves the shutter 3 between a closed position and an open position. It is. The lock release mechanism releases the lock mechanism 23 of the shutter 3, the shutter opening / closing mechanism inserts a driving pin into an insertion hole formed in the side surface of the shutter 3, and the pin is driven in the direction of arrow B, thereby releasing the shutter 3. Move to the open position. Thus, as shown in FIG. 2, the openings 21a and 21b on both sides of the cartridge 1A are opened.

  Further, in order to read the above-described RFID tag 9, the recording device and the reproducing device have a tag reader (not shown) installed in a pickup unit that enters the vicinity of the installation site of the RFID tag 9 facing the RFID tag 9. Alternatively, a transmission / reception antenna for a tag reader / writer is attached. In addition, the recording device and the reproducing device are provided with a demodulation circuit, a modulation circuit, a control unit, a memory, a power supply unit, a display unit, and the like that constitute a main part of the tag reader or tag reader / writer. Various types of internal information recorded on the disc 3, such as a title, index, or summary, and an identification number (ID) can be displayed on the display unit. As described above, this display unit is also used as a display unit for displaying various information recorded on the recording disk 3 provided in the recording device and the reproducing device.

Next, the reading operation of the content information stored in the RFID tag 9 of this embodiment will be described briefly.
As shown in FIG. 4A, the state in which the shutter 3 is closed is turned upside down and loaded into the recording apparatus or the reproducing apparatus. Then, as shown in FIG. 5B, the unlock mechanism and the shutter opening / closing mechanism for releasing the lock mechanism 23 provided in the recording apparatus or the reproducing apparatus (not shown) are operated, the shutter 3 is opened, and the pickup unit is opened in the cartridge. It penetrates to the vicinity of the opening 21a in the main body 2. Therefore, transmission / reception with a radio wave of a specific frequency (for example, 13.56 MHz) is performed between the transmission / reception antenna unit for the tag reader attached to the pickup unit and the antenna 9a of the RFID tag 9 provided on the opening wall 22a. As a result, the content information recorded on the recording disk 3 stored in the memory 94 of the RFID tag 9, such as the title, index, or summary, and the identification number (ID), etc. Can be displayed on the display.

[Second Embodiment]
Next, a cartridge 1B according to a second embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals to avoid redundant description.
6 to 9 are a perspective view, an exploded perspective view, and a sectional view showing the external shape of the cartridge 1B according to this embodiment. Specifically, FIG. 6 is a perspective view showing a state where the shutter 6 of the cartridge 1B is closed, FIG. 7 is a perspective view showing a state where the shutter 6 of the cartridge 1B is opened, and FIG. 8 is a cartridge body constituting the cartridge 1B. 2B, the light-shielding plate 5, the shutter 6, and the disc-shaped hologram recording medium in the accommodating part 20, FIG. 9 is a sectional view taken along the line Xa-Xa of FIG.

  The cartridge 1B of the present embodiment includes a cartridge main body 2B provided with a disk accommodating portion 20 for accommodating the recording disk 3 therein, a light shielding plate 5 attached so as to sandwich the cartridge main body 2B from the outside, and a cartridge main body 2B. A shutter 6 incorporated between the light shielding plate 5 and the light shielding plate 5 is provided. The cartridge 1B is also inserted from the loading direction A into a cartridge slot provided in a recording apparatus for recording various data on the recording disk 3 and a reproducing apparatus for reading out various data from the recording disk 3.

  In the cartridge 1B, the lock mechanism 24 is released by a lock release mechanism of a recording device or playback device (not shown), and the slide mechanism of the recording device or playback device (moves the shutter 6 between a closed position and an open position). Thus, the shutter 6 is moved to the open position, and the openings 21a and 21b and external openings 53a and 53b described later are opened.

Next, the cartridge body 2B, the light shielding plate 5, and the shutter 6 will be described in detail.
(I) Cartridge Main Body 2B First, the cartridge main body 2 includes a first shell 2c formed in a substantially plate shape and a substantially plate-like second shell 2d joined so as to overlap the first shell 2c. Yes. As in the first embodiment, the first shell 2a and the second shell 2b are made of an electromagnetic wave absorbing material or an electromagnetic shielding action that becomes an obstacle when reading and writing the RFID tag 9 described later. It is a substance that avoids a certain metal material and is made of a light shielding material. In this embodiment, for example, it is formed by injection molding using an appropriate thermoplastic material to which a light-shielding substance and a lubricant are added.

The disk accommodating portions 20 of the first and second shells 2c and 2d are protruded into the cartridge from the first and second shells 2c and 2d, respectively, by circular protrusions 24a and 24b that shield the entire circumference of the disk 3. Is formed. Moreover, the substantially tongue-shaped opening 21a, 21b which is a 1st opening which exposes a part of recording disk 3 accommodated in the disk accommodating part 20 outside is opened in the state which penetrated. In particular, on the side of the disc insertion direction A, the openings 21a and 21b are shaped to open portions other than the disc 3. The ridges 24a, 24b are formed along the openings 21a, 21b at the positions of the openings 21a, 21b, and a space P (also part of the disk housing portion 20) in an area other than the disk 3 is formed. Is also shading. Therefore, the RFID tag 9 is attached to the ridges 24a and 24b facing the space P in the area other than the disk 3.
Further, as shown in FIG. 4, a light shielding plate 5 is disposed on the outer surfaces of the first and second shells 2c and 2d, and between the light shielding plate 5 and the first and second shells 2c and 2d. A shutter 6 is slidably installed in the formed slide chamber.

(II) Light-shielding plate 5 On the other hand, as shown in FIG. 8, the light-shielding plate 5 includes a plate-shaped guide portion 51 that contacts the insertion surface (tip surface on the insertion A direction side) of the cartridge main body 2B, and the cartridge main body 2B. A hollow space is formed between the outer surface and the substantially plate-shaped light shielding portions 52a and 52b constituting a slide chamber in which the shutter 6 is slidably accommodated.

  Further, the light-shielding portions 52a and 52b have a center and a recording surface of the recording disk 3 at a portion facing the substantially tongue-shaped openings 21a and 21b of the cartridge body 2 which is a first opening at an opening position described later. Are formed as second openings for exposing the outside to the outside. The external openings 53a and 53b are closed when the shutter 6 in the slide chamber is moved to the closed position, and the disk housing portion 20 of the cartridge body 2B is shielded from light and dust-proof, so that the recording disk 3 is exposed to light. And can be kept clean.

  Since the tag reader is inserted into the light shielding plate 5 from the external opening 53a through the external opening 53a when reading the RFID tag 9, a metal may be used as the material of the light shielding plate 5 in particular. In addition, it is a substance that avoids a radio wave absorbing material or a metal material having an electromagnetic shielding action which becomes an obstacle when reading and writing the RFID tag 9, and in addition, a material having a light shielding property, in other words, An appropriate plastic material may be used as a lightweight and strong material that can obtain light-shielding properties, corrosion resistance, decorative properties, and processability. In this case, it is preferable to use the light shielding plate 5 to which a lubricant is added in order to ensure the slipperiness with respect to the shutter 6.

(III) Shutter 6 The shutter 6 has an outer shape that is the same as or larger than the opening 21a of the first shell 2c and the external opening 53a of the light-shielding plate 5, and has light-shielding shutter portions 61a and 61b. A thin plate-like slide portion 62 attached to one surface (the upper end portion in FIG. 8) of the portions 61a and 61b is movably installed in the slide chamber of the light shielding plate 5. Further, the shutter 6 includes a connecting member 63 and a shutter spring 64 that are connected when the shutter 6 is slid by a slide mechanism provided in the reading device or the reproducing device.

  The shutter 6 is slidably disposed between a “closed position” that closes the opening 21a that is the first opening of the cartridge body 2B and an “open position” that opens the opening 21a. The cartridge is always biased to the closed position and is locked at the closed position by the lock mechanism 24 of the cartridge body 2B. For this reason, the shutter 6 is not opened carelessly.

The shutter 6 is also made of a metal (light-shielding) material. That is, for the same reason as this shutter 6, when reading the RFID tag 9, the tag reader enters the retreated external opening 53 a and opening 21 a of the shutter 6 in the light shielding plate 5. There is no particular obstacle. Note that the material may be a material that avoids a radio wave absorbing material or a metal material having an electromagnetic shielding action that becomes an obstacle when the RFID tag 9 is read / written, and may be formed of a light shielding material. . That is, an appropriate plastic material such as polypropylene may be used as a light and strong material that can obtain light shielding properties, corrosion resistance, decorative properties, and processability. In this case, a material to which a lubricant is added may be used as this material in order to ensure slipperiness with respect to the light shielding plate 5 and the cartridge body 2B.
The RFID tag 9 attached to the protrusion 22a of the first shell 2c does not come into contact with the inner surface of the shutter portion 61a, that is, does not protrude even slightly to the outer surface of the first shell 2c. It is installed.

Next, the reading operation of the content information stored in the RFID tag 9 of this embodiment will be described.
9 is a cross-sectional view taken along line Xa-Xa in FIG. The cartridge body 2B is loaded into the recording apparatus or the reproducing apparatus from the state in which the shutter 6 is closed. Then, the shutter 6 is opened, and the pickup unit enters to cover the longitudinal direction of the opening 21a in the cartridge main body 2B, as in the first embodiment. Therefore, similarly to the first embodiment, a radio wave of a specific frequency (for example, 13) is transmitted between the transmission / reception antenna unit for the tag reader attached to the pickup unit and the antenna 9a of the RFID tag 9 provided on the ridge 24a. .56 MHz). As a result, the content information stored in the memory 94 of the RFID tag 9, that is, the title, index, or summary, as well as the identification number (ID), can be displayed and read on the display unit of the recording device or the playback device. it can.

In addition, this invention is not limited to embodiment mentioned above, A suitable deformation | transformation, improvement, etc. are possible.
For example, in both the first embodiment and the second embodiment, the RFID tag 9 is attached to the protrusion 24a that stands up in a state surrounding the opening 21a of the first shell 2a or 2c. In particular, it is not necessary to limit to this part. In any of the embodiments, the cartridge for accommodating the hologram recording medium has been described as an example. However, the present invention can be applied to a cartridge for accommodating other photosensitive recording media.

  The cartridge of the present invention allows a user or the like to read information stored in an IC tag using a tag reader or the like, while a third party cannot read the information unless a tag reader or the like is used. The user can quickly grasp the contents recorded on the photosensitive recording medium such as the hologram recording medium, and prevent the third person from grasping the recording contents recorded on the photosensitive recording medium. This is useful as a highly confidential cartridge.

Next, examples of the present invention will be described.
The thermoplastics used to mold the upper and lower shells include PBT, ABS, POM, PS, PP, HDPE, PA, PET, PPS, SAN (styrene-acrylonitrile copolymer), PMMA, PC, etc. Can be used. In addition, in order to prevent erroneous welding due to ultrasonic welding, it is preferable to select a part other than the upper shell and the lower shell from the thermoplastics described above for parts other than the upper shell and the lower shell. .

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

(1) Inorganic compound A. Oxides: silica, diatomaceous earth, alumina, titanium oxide, iron oxide (iron black), zinc oxide, magnesium oxide, antimony oxide, barium ferrite, strontium ferrite, beryllium oxide, pumice, pumice balloon, alumina fiber, etc. B . Hydroxides: aluminum hydroxide, magnesium hydroxide, basic magnesium carbonate, etc. Carbonate: calcium carbonate, magnesium carbonate, dolomite, dosonite, etc. (Sulphite) sulfate: calcium sulfate, barium sulfate, ammonium sulfate, calcium sulfite, etc. Silicates: talc, clay, mica, asbestos, glass fiber, glass balloon, glass beads, calcium silicate, montmorillonite, bentonite, etc. Carbon, carbon black, graphite, carbon fiber, carbon hollow sphere, etc. Others: Iron powder, copper powder, lead powder, aluminum powder, molybdenum sulfide, poron fiber, silicon carbide fiber, brass fiber, potassium titanate, lead zirconate titanate, zinc borate, barium metaborate, calcium borate , Sodium borate, aluminum paste, talc, etc. (2) organic compound wood flour (pine, straw, sawtooth, etc.), cereal fiber (almond, peanut, fir shell, etc.), cotton, jute, paper strip, non-wood fiber ( Straw, kenaf, bamboo, esparto, pagas, moroheiya, fireworks, etc.), cellophane pieces, nylon fiber, polypropylene fiber, starch (including modified starch, surface-treated starch), aromatic polyamide fiber, etc.

  Among these light-shielding substances, inorganic compounds that are less likely to adversely affect photographic properties and are heat-stable and opaque even at 150 ° C. or higher are preferable. Particularly, substances that have excellent heat resistance and light resistance and are relatively inert. The light-absorbing carbon black, titanium nitride, graphite and iron black are preferred.

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

  Examples of classification by carbon black raw material include gas black, furnace black, channel black, anthracene black, acetylene black, ketjen carbon black, thermal black, lamp black, oil smoke, pine smoke, animal black, vegetable black, etc. .

  Typical examples of commercially available carbon Bragg products include, for example, carbon blacks # 20 (B), # 30 (B), # 33 (B), # 40 (B), # 41 (B), # manufactured by Mitsubishi Kasei. 44 (B), # 45 (B), # 50, # 55, # 100, # 600, # 950, # 1000, # 2000 (B), # 2400 (B), MA8, MA100, and the like. Also, various grades such as Denka Black made by Electrochemical Co., Ltd., Tokai Carbon Seed, Asahi Carbon Asahi # 78, Showa Cabnet Showa Black, Nippon Steel Chemical Niteron, Mitsubishi Chemical Diamond Black, etc. can be used.

  Examples of overseas products include Black Pearls 2, 46, 70, 71, 74, 80, 81, 607, etc., Regal 1300, 330, 400, 660, 991, SRF-S, Vulcan 3, 6, etc. Examples include Steering 10, SO, V, S, FT-FF, MT-FF, and the like.

  Further examples include United R, BB, 15, 102, 3001, 3004, 3006, 3007, 3008, 3009, 3011, 3012, XC-3016, XC-3017, 3020, etc., manufactured by Ashland Chemical. Is not limited to these.

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

  Further, if the surface roughness Ra is 5 μm or less as the rough surface provided on the shell, the light diffusion effect is thin, and if it is 20 μm or more, the contact surface with the recording disk may be damaged. For this reason, mat processing or embossing with a surface roughness Ra of 5 to 20 μm is preferable.

  Further, although ultrasonic welding is used for fixing the upper shell and the lower shell, other welding methods and fixing methods may be used. For example, when fixing with a screw or the like, it is preferable to form a light shielding structure around the screw hole.

It is a perspective view which shows the external appearance shape of the cartridge which concerns on the 1st Embodiment of this invention. It is an external appearance perspective view which shows the shutter open state of the cartridge. It is a disassembled perspective view which shows the structure of the cartridge. (A) is the IVa-IVa sectional view taken on the line of FIG. 1, (b) is the IVb-IVb sectional view taken on the line of FIG. The RFID tag attached to the cartridge is shown, (a) is a plan view, and (b) is a block diagram. It is a perspective view which shows the external appearance shape of the cartridge which concerns on the 2nd Embodiment of this invention. It is an external appearance perspective view which shows the shutter open state of the cartridge. It is a disassembled perspective view which shows the structure of the cartridge. It is the Xa-Xa sectional view taken on the line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1A, 1B Cartridge 2A, 2B Cartridge body 2a, 2c 1st shell 2b, 2d 2nd shell 20 Disc accommodating part 21a, 21b Opening 22a, 22b Opening wall 24a, 24b Projection 3 Hologram recording medium (recording disc)
4 Shutter 5 Light-shielding plate 53a, 53b External opening 6 Shutter 9 RFID tag (IC tag)
9a Antenna 9b IC chip 93 Controller 94 Memory A Insertion direction B Opening direction C Closing direction P Space

Claims (8)

A disc-shaped photosensitive recording medium;
A cartridge main body having a light shielding property provided with an inner opening for exposing the center of the photosensitive recording medium and a recording surface to the outside, while rotatably accommodating the photosensitive recording medium;
A shutter having a light shielding property and opening and closing the opening of the cartridge body;
A cartridge for a photosensitive recording medium, comprising: a non-contact IC tag provided in a region exposed to the outside when the shutter is opened in the cartridge body. A light shielding plate that has an outer opening at a position opposite to the inner opening and the outer opening of the shutter, and covers and covers the movement range of the shutter other than the opening;
The photosensitive recording medium cartridge according to claim 1, wherein a non-contact IC tag is provided in a region inside the outer opening of the light shielding plate in the cartridge body.   2. The cartridge main body according to claim 1, wherein the inner surface with respect to the photosensitive recording medium and the outer surface with respect to the shutter are subjected to mat processing or embossing with a surface roughness Ra of 5 to 20 [mu] m. The cartridge for photosensitive recording media in any one of 2.   The cartridge body includes a substantially plate-shaped first shell and a second shell that is overlapped and welded to the first shell, and the first shell and the second shell are formed of the same or similar thermoplastic plastic. The other components including the shutter are formed of a material different from that of the first shell and the second shell. 4. The photosensitive recording medium according to claim 1, wherein the first shell and the second shell are formed of a different material. cartridge.   The first shell, the second shell, and the shutter are characterized in that 0.01 to 5.00% by weight of a light-shielding substance is added to plastic used for molding. The cartridge for photosensitive recording media as described in one.   6. The first shell, the second shell, and the shutter, wherein 0.01 to 2.00% by weight of carbon black is added to plastic used for molding the shutter. The cartridge for photosensitive recording media described in 1.   7. The first shell, the second shell, and the shutter, wherein a silicone lubricant is added to a plastic used for molding in an amount of 0.1 to 5.0% by weight. The cartridge for photosensitive recording media as described in one.   8. The photosensitive recording medium cartridge according to claim 1, wherein the photosensitive recording medium is a hologram recording medium.

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