JPS6331036A - Optical card recording support - Google Patents

Abstract

PURPOSE:To prevent a fingerprint and a dirt by composing the title card from a card-shaped substrate, a recording layer which can record and reproduce the information optically provided at the part excluding the edge and part on the substrate and a protecting layer to seal the recording layer provided on the recording layer and the edge end part of the substrate from an outer air. CONSTITUTION:The whole constitution, the material of respective parts of an optical card 40 are approximately the same as the conventional ones and an information track 41 formed in a recording area is formed in a straight line shape in the long side direction of the optical card 40. The length of the long side direction of the recording layer 45 is limited, both edges of the long side direction of the optical card 40 are made into the without the recording layer 45, the information track 41 is formed over the whole length of the long side direction of the recording layer 45, in non-recording areas 42' where the information track 1 is not formed, a protecting layer 43 is made into the condition joined to a substrate 23, a recording layer 41 made into the closed condition and the invasion of humidity, etc., from the external part can be prevented.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to an information recording carrier that is applied to record information using a light beam and reproduce the recorded information using a light beam. In particular, the present invention relates to improvements in optical card record carriers formed in the form of cards.

(Prior Art) Conventionally, various forms of the above-mentioned record carrier have been known, such as a disk-like shape and a tape-like form in addition to a card-like form.
Optical cards (hereinafter referred to as "optical cards") are easy to manufacture, have excellent portability, can record a much larger amount of information than conventional magnetic cards or IC cards, have low manufacturing costs, and have low accessibility. It is expected to be in great demand as a record carrier that has various advantages such as good performance.

This optical card has Re, which can be read and written.
There is an ad/Write type (rR/WROM type hereinafter) and a read-only FIOM type in which information is preprinted and recorded using the 7 otolithography method.

Application examples of R/W type optical cards include insurance details,
Examples of applications for ROM type optical cards include life card records such as medical history and electrocardiogram or X-ray diagnosis results, bank passbook, maintenance of machines, automobiles, etc. Applications of ROM type optical cards include game software, periodical publications such as weekly newspapers, etc. thing,
Examples include learning materials, calligraphy, and pamphlets for members.

Although such optical cards store an extremely large amount of information, their use is expected to expand to include ordinary households in the future due to their portability and ease of use. ing.

Here, an overview of conventional optical cards is shown in Figures 4 and 5 (71
This will be explained with reference to the schematic diagram shown in FIG.

4th (2 is a plan view thereof, and FIG. 5 is a sectional view thereof.

As shown in FIG. 4, the optical card 40 has a recording area 2 provided in a part of a base 1, and its cross-sectional configuration is
As shown in the figure, a recording layer 4 is coated or attached to a transparent substrate 3, and a protective cover 5 is further attached with an adhesive 6.

In the case of R/W type, the material forming the recording area 2, that is, the recording layer 4, is, for example, GdTbFe, Gd
Magneto-optical materials such as TbFe(:o), phase change materials such as Team, write-once recording materials such as TeC, Tea, dye-based recording materials such as azulene, silver salt films, or fi salt films. Treated drexon wood (
(manufactured by Drexler, USA) etc. are applicable.

Further, in order to record information on the optical card or to reproduce information recorded on the optical card, an information recording/reproducing apparatus for optical cards as shown in FIG. 6 is used.

As shown in the figure, the device includes a frame 51 provided with an insertion slot 50 for inserting the optical card 40 into the device.
Inside, there is provided a card feeding shaft 52 for reciprocating the optical card 40 in the direction of the arrow A-B, a belt 53 connected to the motor, a pulley 54, and the optical card 40.
An optical head 55 is moved relative to the optical card 40 to record and reproduce information on the optical card 40.
The optical head motor 56 is provided with an optical head motor 56 that is moved in a direction perpendicular to the B direction. Reference numeral 57 denotes a transport platform for the optical card 40 called a shuttle. A part of the shuttle 57 is connected to the belt 53, and the optical card 40 is reciprocated in the direction of arrow A-B via the belt 53 by the drive of the motor 52. They are forced to be transferred.

With the device having the above configuration, the optical card 40 is first inserted into the insertion slot 5.
When inserted from 0, the optical card 40 is guided by a shuttle 57 conveyed by a motor 52 via a belt 53, and moves in the direction of arrow AB relative to the optical head 55. This arrow A-B direction corresponds to the direction of the information track 41 (FIG. 1(a)) of the optical card 40, and the beam spot irradiated from the optical head 55 is scanned along the information track 41, and the information signal is Predetermined information pits are formed as required, or the formed information bits are read.

Next, when the motor 56 is driven and rotated, the optical head 55 is guided! 58 in a direction perpendicular to the direction of the information track, and the beam spot emitted from the optical head 55 is caused to scan another information track.

(Problems to be Solved by the Invention) The advantages of optical cards have been described above, but since optical cards are generally more portable than optical disks, they are not handled roughly or exposed to various environments. Furthermore, although the surface of the recording layer of the optical card is protected by the M retaining layer as described above, its edges are exposed. This is due to the manufacturing method of the optical card. That is, as shown in FIG. 7, the optical card is manufactured by firstly stretching a recording film 20 wound around a reel 21 onto a long base 19 via an adhesive, pressing it down with a roller 22, and then rolling it in a similar manner. Since it is manufactured by pasting a protective layer (not shown) and then cutting it into a predetermined size, the cross section is exposed.

However, the material used for the recording layer of the optical card shown in FIG. 7 is susceptible to floating and oxidation, and moisture and the like enter through the exposed cross-section of the optical card, which tends to deteriorate the characteristics of the recording layer.

Furthermore, when using such an optical card, e.g. w
When inserting the optical card into the optical card recording and reproducing device shown in Figure S6, the user usually holds the end of the optical card with his fingertips and inserts it into the insertion slot of the device. Fingerprints and dirt adhere to the recording area.

However, since an optical card is thinner than, for example, an optical disk, its recording and reproducing characteristics are easily affected by dirt on the surface, and in particular, fingerprints attached to the surface have a significant effect on the characteristics.

Therefore, the present invention was devised to solve the above-mentioned problems and provides an optical card recording medium that can prevent fingerprints and dirt on the surface of the recording area that would degrade the recording and reproducing characteristics of an optical card recording carrier. The purpose is to provide a carrier.

(Means for Solving the Problems) The above-mentioned conventional problems are such that the card-shaped base of the present invention and the optical information recording and/or The problem is solved by an optical card record carrier consisting of a reproducible recording layer and a protective layer provided on the recording layer and on the edge of the substrate to seal the recording layer from the outside air.

(Function) When using the optical card recording carrier of the present invention with the above configuration, for example, when inserting the carrier into the insertion slot of a recording/reproducing device, the user should touch the end of the carrier (that is, the non-recording area) with his/her fingertip. By sandwiching the carrier, fingerprints will not be attached to the recording area of the carrier, and there will be less chance of dirt or the like attaching.

Furthermore, even if moisture etc. enters from the edges of the carrier,
The influence on the recording area is almost suppressed.

(Example) An example of the present invention will be described below with reference to the accompanying drawings.

FIG. 1(a) is a plan view of the optical card of the first embodiment, FIG. 1(b) is a cross-sectional view thereof, FIG. 2 is a conceptual diagram showing the manufacturing method of the optical card of the above embodiment, and FIG. FIG. 3 is a diagram for explaining a manufacturing method of another example.

The overall structure and materials of each part of the optical card 40 of this embodiment are almost the same as those of the conventional optical card. 23 is a base body, 24 is a recording area, and 41 is an information trough formed within the recording area. The information trough 41 is formed linearly in the long side direction of the optical card 40. Also, 45 is a recording layer,
44 is an adhesive, and 43 is a protective layer.

In the optical card 40 of this embodiment, as shown in FIGS. 1(a) and 1(b), the length of the recording layer 45 in the long side direction is limited, and both ends of the optical card 40 in the long side direction are This is the part without layer B 45. Information tracks 41 are formed over the entire length of this recording layer 45 in the long side direction. 42.
Reference numeral 42' indicates a non-recording area where no information track 41 is formed, and as shown in FIG. It is in a state where it is joined to 23.

Thereby, the recording layer 41 is made into a closed state, and it is possible to prevent moisture and the like from entering from the outside.

Further, the non-recording areas 42, 42' are such that when the user holds the non-recording areas 42, 42' with his/her fingertips when using the optical card 40, the fingertips touch the recording area 24 and fingerprints, dirt, etc. The optical card 40 should not adhere to the area.
It is desirable that the lengths from the sides of the optical card and the vertical length of the optical card be about 10 m+s.Next, the method for manufacturing the optical card of this embodiment will be described with reference to FIG.

26 is a long base body, which is sent in the direction of arrow A as the guide roller 31 rotates. Reference numeral 29 denotes a guide body, and the film recording material 25 (forming the recording layer 45), which has been shaped in advance, is sent along the guide body 29 in the direction indicated by the arrow at a constant interval. Reference numerals 27 and 28 designate guide rollers for transporting the film recording material 25 in the direction of the arrow, and rotate at the same speed as the guide roller 31.

The elongated substrate 26 is coated with an adhesive in advance, and the film recording material 25 supplied to the elongated substrate 26 is pressed against the elongated substrate 26 by a pressure roller 30 to be bonded. The shaku recording layer is pasted from above,
A desired optical card 40 (FIG. 1(a)) is cut into a predetermined length.
)) or obtained.

Note that the optical card of this embodiment is manufactured as described above.

As shown in FIG. 3, a sheet film 32 having a cut-out portion 46 cut out to the desired shape and size of the recording area is pasted on the base 23, and the sheet film 32 is coated by spinning coating, dippin coating, roll coating, etc. is applied to the cutout portion 46, and then the C-11432 is peeled off to form a desired recording layer.

As shown in the same figure, the sheet membrane 32 is formed by continuously providing the cutout portions 46 at a predetermined interval in a long sheet membrane, and then cutting out the cutout portions 46 in a continuous manner at a predetermined interval. It is also possible to apply a spinning coat or the like to each cutout portion 46 as described above, and then cut it into a predetermined shape.

By the method described above, it is possible to suitably form the non-recorded areas 42, 42' as shown in FIG. 1(a).

(Effects of the Invention) As explained above, when using the optical card recording carrier of the present invention, for example, when mounting the carrier in a playback device, the user can
Since the carrier can be inserted into the insertion opening of the device by holding it with the fingertips, fingerprints will not adhere to the recording area of the carrier, and there will be less chance of dirt etc. adhering.

Furthermore, even if moisture or the like infiltrates from the sides of the carrier, the influence on the recording area is almost suppressed.

Therefore, according to the optical card storage Q carrier of the present invention as described above, the recording material forming the recording area is not affected by moisture or the like from the outside.

Furthermore, since fingerprints, dirt, etc. are prevented from adhering to the recording area during use, deterioration of recording and reproducing performance due to these influences can be prevented to the utmost.

[Brief explanation of drawings]

FIG. 1(a) is a plan view of an optical card according to an embodiment of the present invention, FIG. 1(b) is a sectional view thereof, and FIG. 2 is a schematic diagram showing a method of manufacturing the optical card of the above embodiment. Fig. 3 is a diagram for explaining the manufacturing method of an optical card of another embodiment, Fig. 4 is a plan view of a conventional optical card, Fig. 5 is a cross-sectional view thereof, and Fig. 6 is a recording/reproducing method for the optical card. FIG. 7 is a schematic diagram showing a conventional optical card manufacturing method. 24... Base, 24-... Recording area, 40... Optical card, 42. 42'... Non-recording area. Agent Patent Attorney Seki Taira Yamashita Figure 2 Figure 6 Figure 7

Claims (1)

[Claims] (1) A card-shaped base, a recording layer that is provided on the base except for the edges and is capable of optically recording and/or reproducing information, and on the recording layer and at the ends of the base. An optical card record carrier comprising a protective layer provided on the edge and sealing the recording layer from the outside air.