JPS61165871A - Container for information recording medium - Google Patents

Abstract

PURPOSE:To avert or decrease such trouble that an information recording medi um sticks to fixing members by providing an anti-tack layer to at least part of the surface of the information recording medium fixing members provided in a container which is used for the information recording medium and is pro vided internally with said fixing members. CONSTITUTION:The anti-tack layer 13 is provided on the surface of the fixing members 12 provided near the center of the container 11. The information recording medium is surely fixed via the fixing members to the inside of the container and the sticking between the fixing members and the information recording medium is effectively averted or decreased by the effect to the anti- tack layer. Various materials which do not stick to materials such as plastic, glass and metals constituting the information recording medium even when held in contact therewith for a long period of time or exposed to severe conditions of a high temp. and high humidity and are generally used as a release agent are utilized for the anti-tack agent. The most preferable anti-tack agent is a silicon-contg. org. compd. or fluorine-contg. org. compd.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of the Invention] The present invention relates to a storage container for accommodating a readable information recording medium.

[Technical Background of the Invention] In recent years, various information recording media have been developed and used, and one of the representative media is one called an optical disc. This optical disk is an information recording medium that uses a high-energy-density beam such as a laser beam, and can be used to record video disks, audio disks, large-capacity still image files, large-capacity computer disks, etc.
It is used as memory.

The basic structure of an optical disk is a disc-shaped substrate made of plastic, glass, etc., and Bi, S, etc.
It has a structure including a recording layer made of a material such as a metal or semimetal such as n, In, or Te.

Information is written on an optical disk by, for example, irradiating the optical disk with a laser beam.
As a result of the irradiated portion of the recording layer absorbing the light and locally increasing its temperature, a physical or chemical change occurs, and information is recorded by changing its optical properties. Reading information from an optical disc is also done by irradiating the disc with a laser beam, and the information is reproduced using methods such as detecting reflected or transmitted light according to changes in the optical characteristics of the recording layer. be done.

Furthermore, recently, an air sandwich structure has been proposed and used as a disk structure for protecting the recording layer. An optical disk with an air sandwich structure is composed of two disc-shaped substrates, on which a recording layer is provided (the recording layer may be provided only on one of the substrates), and on which the recording layer is provided. It has a basic structure in which the recording layer is located inside and is joined via a ring-shaped inner spacer and a ring-shaped outer spacer so as to form a space. In optical discs with such a structure, the recording layer is not in direct contact with the outside air, and information is recorded and reproduced using laser light that passes through the substrate, so the recording layer is generally susceptible to physical or chemical damage. It has the advantage that there is no possibility of dust or dust adhering to its surface, which would impede the recording and reproduction of information.

As mentioned above, information recording media are extremely useful in a variety of fields, and their recording sensitivity is high, and read signals with a high S/N ratio can be obtained. High levels of various properties are desired.

On the other hand, since information recording media generally have a thin disk shape, they have the disadvantage of being relatively weak against mechanical shock.Also, the high performance described above is limited by the presence of inorganic substances such as dust and oil on the surface of the medium, or There is a problem in that it tends to deteriorate when organic matter adheres to it.

Therefore, disc-shaped information recording media such as those described above are often stored and transported in storage containers made of plastic or metal materials. for,
A so-called cartridge method is also used in which the information recording medium is attached to and detached from a device used for recording or reproducing information on the information recording medium, in which the information recording medium is attached to and detached from the device while the information recording medium is stored in a storage container. Even within such storage containers, the information recording medium must be protected from mechanical stimulation as much as possible. (members made of materials).

The 86 information records are stored in a fixed manner.

The method of storing information recording media using a storage container equipped with a fixing member as described above presents almost no problems if the information recording medium is stored or transported for a short period of time under relatively mild environmental conditions. However, when storing or transporting information recording media in harsh environmental conditions such as high temperature or high humidity, or when preserving for a long period of time even under mild environmental conditions, fixing members and information recording media are required. Adhesion with the surface of the media tends to occur. If such adhesion occurs, the surface of the information recording medium will be contaminated, making it difficult for the medium to exhibit its originally high performance, or the medium may be damaged when removed from the storage container. Damage may occur, and the information recording medium may not operate properly within the recording/reproducing device when stored in the cartridge type described above.

[Object of the Invention] The present invention is a storage container equipped with a fixing member for storing an information recording medium typified by an optical disk, which is used when storing, storing, transporting, etc. the information recording medium. The main object of the present invention is to provide a storage container that can avoid or reduce troubles such as sticking of information recording media to the inside of the storage container, particularly to fixing members, during storage and transportation.

[Summary of the Invention] The present invention provides a container for accommodating an information recording medium, which is provided with an information recording medium fixing member therein, and wherein at least a part of the surface of the fixing member is provided with an anti-adhesive layer. The present invention provides a storage container for an information recording medium, which is characterized in that:

[Structure of the Invention] An optical disk, which is one of the representative examples of information recording media, generally has a recording layer on a substrate such as a glass plate, a plastic plate, or a plastic sheet, on which information can be written and/or read by a laser. Manufactured by forming.

If desired, one or more intermediate layers (e.g., undercoat layer, heat insulating layer) may be provided between the substrate and the recording layer, and if desired, a protective film may be formed on the surface of the recording layer. be. In addition, when the recording layer is provided on only one side of the substrate, the surface opposite to the side on which the recording layer is provided may be coated with silicon dioxide, tin oxide, fluoride, etc. to improve scratch resistance, moisture resistance, etc. A protective layer made of an inorganic substance such as magnesium may be provided by vacuum deposition, sputtering, or the like.

The basic structure described above is an information recording medium in which a recording layer is provided on one or both sides of a single substrate.

This is basically common to information recording media of any structure, such as information recording media with a structure in which information recording media having a recording layer on one side are bonded back to back, or information recording media with a sandwich structure.

Any of these information recording media can be stored in the improved information recording medium storage container of the present invention.

The information recording medium storage container of the present invention is a container equipped with an information recording medium fixing member therein, and is characterized in that an anti-adhesion layer is provided on at least a part of the surface of the fixing member.

As information recording medium storage containers that are provided with information recording medium fixing members inside, various types of containers made of various materials and in various shapes have been known. In principle, the storage container can be applied to any of these types. In addition, various materials and shapes of the fixing member are known.6 As the fixing member of the improved storage container of the present invention,
In principle, it can be applied to any of these types.

Preferably, an anti-adhesion layer is provided on substantially the entire surface of the fixing member that contacts the information recording medium.

The storage container provided with the anti-adhesive layer of the present invention is illustrated in FIG. 1 [(a): vertical sectional view and (b): (
a) Planar sectional view taken along line I-I of the container shown in the figure]
The configuration is as shown in .

That is, the anti-adhesion layer 13 is provided on the surface of the fixing member 12 provided near the center of the storage container 11. FIG. 2 is a schematic diagram showing a state in which a disc-shaped information recording medium 24 is stored in a storage container 21 having the same shape as that shown in FIG. It is. The anti-adhesion layer 23 provided on the fixing member 22 of the storage container 21 is as follows.

It is arranged so as to be in contact with the surface of the disc-shaped information recording medium 24.

In other words, by adopting one or more of the above configurations, the information recording medium is securely fixed inside the storage container via the fixing member, and the occurrence of adhesion between the fixing member and the information recording medium is prevented by the action of the anti-adhesion layer. effectively avoided or reduced.

The material (anti-adhesion agent) forming the anti-adhesion layer provided in the fixing member of the storage container of the present invention is as follows.

There is no particular restriction as long as the material does not stick to the material such as plastic, glass, or metal constituting the information recording medium, or even when placed under severe conditions of high temperature and high humidity.For example, a mold release agent is generally used. Various materials (high-molecular compounds, low-molecular compounds) used as such can be used. Particularly preferred materials include silicone compounds, fluorine-containing organic compounds, silicon oxide, and polyolefins (
Examples are polyethylene, polypropylene, ethylene copolymers), and penzoguanamine formaldehyde, which are generally dispersed in a binder at 1 to 10% by weight (or may be dissolved) and used to form the anti-blocking layer. Binders used for the above purpose include:
Examples include polyhydroxystyrene resin, phenolic resin, and nitrocellulose, and these can be used alone or in combination.

In the present invention, the most preferable anti-adhesion agent to be included in the anti-adhesion layer is a silicon-containing organic compound or a fluorine-containing organic compound, and specific examples thereof include the following compounds.

(I) Compound having a C8F1F5O2NR- group (R is hydrogen or an alkyl group having 6 or less carbon atoms) 1) CsF17SO2NH(C3H))3)
Cs F17SO2N (C3H?) CH,C00K CH2C00K (Rf is an alkyl group containing 7 tsuso atoms) (m) Silicone polymer (, +, = lo ~50) The anti-adhesive layer generally has a thickness of 0.5 to 500 ILm is formed.

The anti-adhesive layer can be formed, for example, by dissolving or dispersing an anti-adhesive agent and a binder in a suitable solvent to prepare a coating solution, and applying this coating solution to a spin-coding method, a dip-coating method, an extrudion-coating method, a bar-coding method, It can be formed by applying it to part or all of the surface of the fixing member using a coating method such as screen printing, and drying it.

[Effects of the Invention] When storing, transporting, operating, etc. an information recording medium such as an optical disk stored in a storage container equipped with the information storage medium fixing member of the present invention, the information recording medium may be inside the storage container, In particular, it is possible to avoid or reduce the occurrence of troubles such as sticking to the fixing member, and this is extremely effective in improving the reliability of the stored information recording medium.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an example of a storage container for an information recording medium of the present invention, of which (1) is a vertical sectional view, and (b) is a vertical cross-sectional view.
(&) is a plan sectional view taken along the line II of the storage container shown in the figure. FIG. 2 is a schematic diagram showing a state in which an information recording medium is stored in the storage container shown in FIG. 11.21: Storage container for information recording medium 12.22: Fixing member 13.23: Anti-adhesion layer 24: Information recording medium patent applicant Fuji Photo Film Co., Ltd. Representative Patent attorney Yasushi Yanagawa Figure 1 Figure 2 Diagram and Totootsu°]

Claims (1)

[Claims] 1. A container for accommodating an information recording medium, which is provided with an information recording medium fixing member therein, and an anti-adhesion layer is provided on at least a part of the surface of the fixing member. A storage container for an information recording medium, characterized in that: 2. The storage container for an information recording medium according to claim 1, wherein an anti-adhesive layer is provided on substantially the entire surface of the fixing member that contacts the information recording medium. 3. A patent characterized in that the anti-adhesive layer is a layer in which at least one compound selected from the group consisting of silicon-containing organic compounds, fluorine-containing organic compounds, silicon oxide, polyolefins, and benzoguanamine formaldehyde is dispersed in a binder. A storage container for an information recording medium according to claim 1 or 2. 4. The information recording medium according to claim 3, wherein the binder is mainly composed of at least one compound selected from the group consisting of polyhydroxystyrene resin, phenol resin, and nitrocellulose. storage container. 5. The storage container for an information recording medium according to claim 1 or 2, wherein the anti-adhesion layer contains a silicon-containing organic compound or a fluorine-containing organic compound.