JPH05282776A - Information recording device and information recording medium - Google Patents

Abstract

PURPOSE:To easily make a display at low cost by sending a thermal or electric signal which corresponds to information on a bibliographic item to a reversible thermal recording medium. CONSTITUTION:A thermal head 4 is provided at a part corresponding to a bibliographic item recording part and movable relatively to a jacket or cartridge by a motor 5 or wire 6. A recording instruction is outputted from an information processor to a display part and the recording device 7 while moving the thermal head 4 heats the thermal head 4 at a desired position to form a character pattern on the thermal medium. When erasure becomes necessary, the heat generation pattern of the thermal head 4 is changed to gradually cool the thermal medium. Then a user can writes the name and contents of the medium at the display part when using a magnetic recording medium or optical recording medium and freed from troublesome label sticking operation. Thus, the display is easily obtained at low cost. Here, the recording instruction uses the thermal or electric signal.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an information recording device and an information recording medium, and more particularly to an information recording device and an information recording medium in a magnetic recording medium or an optical disc.

[0002]

2. Description of the Related Art Magnetic recording media (floppy disks, etc.)
Optical recording media are widely used as recording media for information devices such as word processors and computers. Usually, the recorded contents of the recording medium are written on an adhesive label and attached to the surface of the jacket or the cartridge. However, this is a troublesome act, and once it is forgotten, there is a problem that the content cannot be understood later. In order to solve this point, for example, the one disclosed in Japanese Patent Laid-Open No. 7252/1990 provides a cartridge with a semiconductor integrated circuit and a display unit for displaying the usage amount of the magneto-optical recording medium. That is, although a semiconductor integrated circuit and a medium provided with the display portion thereof have been proposed, there is a drawback that the mechanism for displaying is complicated and the cost becomes high.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to propose a jacket or a cartridge which can display recorded contents easily and inexpensively, and an information recording apparatus therefor. ..

[0004]

In order to achieve the above object, the present invention provides (1)
In a jacket or a cartridge containing an information recording medium, the bibliographic items of the information recording medium are sent to a reversible thermosensitive recording medium provided in the jacket or the cartridge, with heat or electric signals corresponding to the information of the bibliographic items. Or (2) in a recording / reproducing apparatus equipped with an information recording medium, in a portion facing a reversible thermosensitive recording medium displaying bibliographic items,
A thermal head for generating heat corresponding to the information on the bibliographical information is provided, and a moving means for moving the thermal head relative to the jacket or the cartridge is provided, or (3) the description in (1) above. A recording medium having a recording layer whose main component is a crystalline polymer whose crystal grain size (size) reversibly changes due to temperature change is used on the surface of the jacket or the cartridge, and the recording layer is made of the crystalline polymer. When heated to a temperature above the melting point and cooled,
A bibliographic item in which the recording medium and the planar heating element are integrated to cause a change in the crystal grain size (size) according to the cooling rate and utilize the resulting change in optical characteristics for recording. A display unit is provided, or (4) in the information recording apparatus in which the information recording medium is mounted, a terminal is provided for supplying an electric current to the sheet heating element provided in the portion for displaying bibliographic items. Alternatively, (5) the bag for enclosing the information recording medium is characterized by including a reversible thermosensitive recording medium area capable of displaying information related to the recorded contents of the medium. Hereinafter, description will be given based on examples of the present invention.

FIG. 1 is a block diagram for explaining an embodiment of an information recording medium according to the present invention. In the figure, 1 is an optical disk, 2 is a cartridge, and 3 is a recording medium area. The cartridge 2 of the optical disc 1 is provided with a heat-sensitive recording medium area 3, and bibliographical items (disc name, classification, contents, directory, etc.) by applying heat or electric signals to the recording medium area 3 from the outside. Can be displayed.

As a recording medium for the heat sensitive body, In--Sb.
Phase change materials such as Se, Ag.Sb-Sn, and TeOx can be used. In the present invention, various organic materials are further studied as suitable materials, and a recording layer containing a crystalline polymer as a main component is used. In the provided recording medium, the size of the crystalline particles of the crystalline polymer is increased by raising the temperature of the recording layer to a temperature equal to or higher than the melting point of the crystalline polymer forming the recording layer and then cooling by changing the cooling rate. Has been found to change reversibly, resulting in a change in optical characteristics, leading to the present invention. Since the recording medium of the present invention utilizes the change in size of the crystal grains of the crystalline polymer forming the recording layer, high speed recording is possible. Further, since it is an organic substance, it is advantageous in terms of toxicity and safety.

The crystalline polymer layer can be directly provided on the jacket or the cartridge, but it is preferable to form it on a film having a large area and cut and stick it because it is inexpensive. The size of the display section for the bibliographic items is not particularly limited, but it is desirable that there is a space of at least 15 characters or more for displaying the title and contents of the medium. Of course, it should not exceed the surface area of the jacket or cartridge.

FIG. 2 is a block diagram for explaining an embodiment of an information recording apparatus according to the present invention, in which 4 is a thermal head,
Reference numeral 5 is a motor, 6 is a wire, 7 is an information processing device (such as a personal computer), 8 is a spindle, and 9 is an optical head. A thermal head 4 is provided at a portion facing the bibliographical matter recording portion, and the thermal head 4 can be moved by a motor 5 and a wire 6 relative to a jacket or a cartridge. When recording a bibliographic item, a recording command is issued from the information processing device 7 (such as a personal computer) to the display unit, and the information recording device causes the thermal head to generate heat at a desired portion while moving the thermal head. Form a character pattern on the medium. When erasing is necessary, the heating pattern of the thermal head is changed so that the heat-sensitive medium is gradually cooled. As a result, the user can write the name, content, etc. of the magnetic recording medium or the optical recording medium on the display unit at the time of using the magnetic recording medium or optical recording medium, and can be relieved from the trouble of labeling.

FIG. 3 is a diagram showing a thermal recording medium. In the figure,
Reference numeral 10 is an electrode, 11 is a crystalline polymer layer, and 12 is a planar heating element. A thermosensitive recording medium in which a crystalline polymer layer 11 and a planar heating element 12 are combined is provided in a bibliographic item display section. If the planar heating element is of the entire surface integrated type, the crystalline polymer layer 11 can be erased at once by applying a current from the electrode 10. Further, if a planar heating element 12 is used in the form of a matrix, a thermal head is not required at the time of recording, and writing or erasing can be performed by heating each dot of the matrix in accordance with a character pattern. In addition, the recording / reproducing apparatus includes an electrode 10
It is necessary to provide a terminal corresponding to.

The crystalline polymer used in the present invention is a copolymer of vinylidene fluoride and trifluoroethylene, a copolymer of vinylidene fluoride and tetrafluoroethylene, or a vinylidene fluoride and hexafluoropropylene. Copolymer, ternary copolymer of vinylidene fluoride and tetrafluoroethylene and hexafluoropropylene, polyvinylidene fluoride, polyamide, polyethylene, polycarbonate, vinylidene chloride resin, polyethylene terephthalate, polyvinylcarbazole, polypropylene, polyethylene oxide, polyimide , Polyvinyl alcohol, etc.

[0011]

As is apparent from the above description, the present invention has the following effects. (1) A jacket or a cartridge of an information recording medium is provided with a reversible thermosensitive recording medium for recording bibliographic items of the medium, and by sending a heat or electric signal, the name and content of the medium when the recording medium is used. Can be displayed. (2) Since the bibliographical item display unit is formed by combining the crystalline polymer layer and the sheet heating element, it is possible to provide a medium that is easy to write and erase.

[Brief description of drawings]

FIG. 1 is a configuration diagram for explaining an embodiment of an information recording medium according to the present invention.

FIG. 2 is a configuration diagram for explaining an embodiment of an information recording device according to the present invention.

FIG. 3 is a diagram showing a thermal recording medium.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Optical disk, 2 ... Cartridge, 3 ... Recording medium area, 4 ... Thermal head, 5 ... Motor, 6 ... Wire, 7 ... Information processing apparatus (personal computer etc.), 8 ... Spindle, 9 ... Optical head.

Claims (3)

[Claims] 1. A jacket or a cartridge containing an information recording medium, wherein a reversible thermosensitive recording medium provided in the jacket or the cartridge is provided with a bibliographic item of the information recording medium and a heat corresponding to the information of the bibliographic item. Alternatively, an information recording device characterized by displaying by sending an electric signal. 2. An information recording apparatus equipped with an information recording medium, wherein a thermal head for generating heat corresponding to the information of the bibliographic item is provided in a portion facing the reversible thermosensitive recording medium for displaying the bibliographic item. An information recording apparatus comprising a moving means for moving the thermal head relative to a jacket or a cartridge. 3. A recording medium having a recording layer containing a crystalline polymer as a main component, wherein the grain size (size) of crystal grains reversibly changes due to temperature change on the surface of the jacket or the cartridge according to claim 1. , Heating the recording layer to a temperature above the melting point of the crystalline polymer, and when cooling,
A bibliographic item in which the recording medium and the planar heating element are integrated to cause a change in the crystal grain size (size) according to the cooling rate and utilize the resulting change in optical characteristics for recording. An information recording medium having a display unit.