JPS63133332A - Optical information recording carrier - Google Patents

Abstract

PURPOSE:To permit easy formation of an optical card by converting the information record recorded by a concn. distribution of a luminous body pattern to an emission intensity distribution thereby forming the recorded information. CONSTITUTION:A thin Al film layer 2 is laminated on a base material 1 and a photoresist 3 is coated thereon so that the thin film thereof is formed. The resist 3 is then exposed via an original plate consisting of a fine optical density pattern and is developed to form a resist pattern 4 on the layer 2. A fluorescent dye or pigment 5 is further packed and stuck to the layer 2 exposed in the recesses of the pattern 4 and is colored to form the luminous body pattern 6. An adequate transparent base material 7 is thereafter stuck via an adhesive layer 8 onto the pattern 6, by which an optical information recording medium is formed. The optical card is thus formed by converting the information record recorded by the concn. distribution of the luminous body pattern to the emission intensity pattern to form the recorded information.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an optical information recording carrier for optically reproducing information.

[Prior Art] In recent years, with the progress of informationization in society, many proposals have been made for information recording carriers and optical information recording ILT generation devices that optically record or +If-generate information as a step toward efficiently handling a wide variety of information. has been done. On the information recording carrier, the information that has been converted into an eift is converted into intensity changes by changes in reflectance, changes in reflected light intensity due to surface shape such as the presence or absence of pits, and changes in the plane of polarization due to the magneto-optic effect. Is there something that can be detected?

The above-mentioned information recording carrier is characterized by its high recording Q density and non-contact recording and reproduction, which makes it have a long lifespan. Have optical discs, optical carts, optical tapes, etc. been devised as such optical information recording carriers?
A theory 1!1 will be given regarding the optical reproduction of information on an optical cart, which is a cart-shaped information recording carrier that is highly portable and has a large capacity compared to its size.

FIG. 3 is a schematic configuration diagram showing an optical information 11 device using the optical cart described above. In FIG. 3, 9 is an optical cart, 10 is a stage on which the optical card 9 is placed and is movable in the direction 1E in the figure, 11 is a roller that drives the stage 10, 12 is a light source such as a laser, I3 is an illumination optical system, 1
4 is an imaging optical system, and 15 is a sensor. In the optical information reproducing device shown in FIG. 3, the light emitted from the light source 12 is
The illumination optical system 13 illuminates one row of information signal rows, and the imaging optical system 14 uses the reflected light (signal light for light intensity, polarization, etc.) for a part of the information signal row L. The structure is such that an image is formed on the sensor 15, and information is detected for each row of information signals.

This method has the advantage that it is possible to manufacture a device for reproducing information from the optical cart 9 using easily available components, but it also reduces the thickness of the optical head (the portion including reference numbers 12 to 15). It is difficult to make it thin, and it also has the disadvantage that if the optical cart 9 has a tilt error, the amount of reproduction light will change greatly, since the city uses the reflected light of the optical cart 9 to reproduce information. was.

[Problems to be Solved by the Invention] In view of the above-mentioned problems of the conventional optical card, an object of the present invention is to provide an ultra-thin optical card that is resistant to tilt errors of the optical card and has a simple structure. An object of the present invention is to provide an optical information recording carrier.

[Means for solving the problem, that is, the present invention improves the conductivity of the conductive thin film layer or the laminated base material. b. Forming a resist pattern on the 11'2 layer and filling the concave portions of the resist pattern with a fluorescent dye or pigment to form a luminescent pattern.
- a transparent base material is laminated on the transparent base material through an adhesive layer;
! 1), (Murakami is irradiated with an external illumination light beam to impart energy to the light emitting body pattern to cause it to emit light, and the information record recorded by the concentration distribution of one light emitter pattern is converted into a light emission intensity distribution to obtain the recorded information. This is an optical information recording carrier characterized in that it produces 11 times.

Furthermore, specifically, as an information recording Q carrier that optically reproduces information, Omurakami irradiates the information recording carrier with an illumination beam from the outside and imparts energy to the light emitter pattern constituting the recording medium. In an optical information recording carrier that reproduces recorded information by emitting light and converting the information recorded by the density distribution of the luminescent pattern into the luminous intensity distribution,
A photoresist is applied onto a layer of conductive thin film, and then pattern exposure is performed on the odoresist layer (via an original plate consisting of a fine optical density pattern), and then the photoresist is developed to form a resist pattern. The conductive thin film layer exposed in the concave portions of the resist pattern is filled with a fluorescent dye or pigment and colored to form a luminous pattern.

The present invention will be explained in detail below.

FIG. 1 is a sectional view showing an example of an optical information recording carrier according to the present invention. In FIG. 1, the optical information storage Q carrier of the present invention has a conductive thin film layer 2 laminated on a base material l, a resist pattern 4 is formed on the conductive thin film layer 2, and a resist pattern 4 is formed on the conductive thin film layer 2. A luminescent pattern 6 is formed on the conductive thin film layer 2 by filling the concave portion with a fluorescent dye or pigment, and a transparent base material 7 is laminated on the luminescent pattern 6 via an adhesive layer 8. That's what happens.

Next, the manufacturing method U of the optical information storage Q carrier according to the present invention will be explained. FIGS. 2(a) to 2(d) show process diagrams of a method for manufacturing an optical information recording carrier according to Unreleased II.

First, as shown in FIG. 2(a), a conductive thin film layer 2 is laminated on a base material l. Next, as shown in FIG. 2(b), a photoresist 3 is applied on the conductive thin film layer 2. ? Form I Pt2. Next, as shown in FIG. 2(C), the photoresist 3 is exposed to light through an original plate consisting of a fine optical density pattern, and after pattern exposure is performed on the photoresist 3, it is developed to form a resist pattern 4. Formed on the conductive thin film layer 2. Furthermore, as shown in FIG. 2(d), the conductive thin film layer 2 exposed in the concave portions of the resist pattern 4 is filled with fluorescent dye or pigment 15 and colored to form a luminescent pattern 6. In this manner, a luminescent pattern 6 using the fluorescent dye or pigment 5 as a luminescent material can be formed on the base material 1. Thereafter, by laminating a suitable transparent base material 7 onto the light emitter pattern 6 via the adhesive layer 8, the optical information recording carrier according to the present invention shown in FIG. 1 can be easily manufactured.

In the present invention, the base material l can be any material that can be used as a normal cart base material, and specifically, polyvinyl chloride, vinyl chloride-vinyl acetate copolymer, polyvinylidene chloride, polymethacrylate, etc. Acrylic polymers such as methyl acid, polystyrene, polyvinyl butyral,
Acetyl cellulose, styrene-butadiene copolymer,
Polyethylene, polypropylene, polycarbonate, epoxy, ABS resin, etc. are used. In some cases,
Metal sheets, synthetic paper, paper, etc. are also reusable, and furthermore,
Laminated bodies of materials such as those mentioned above can also be used.

The transparent base material 7 is preferably one that is less inconvenient for optical reproduction, such as acrylic resin, polyester resin, polycarbonate resin, vinyl resin, polysulfone resin, polyimide resin, polyacetal resin, polyolefin resin, polyamide resin, Cellulose derivatives etc. can be used.

These transparent substrates may be subjected to pre-treatment to improve adhesion, such as corona discharge treatment, plasma treatment, UV-ozone treatment, and primer treatment, if necessary.

In the present invention, the photoresist may be either a negative type or a positive type, or one that has high resolution and can sufficiently resolve the original pattern during pattern exposure may be selected and used, and is not particularly limited. It's not something you can do.

The conductive thin film layer 2 is preferably conductive, can be formed as a thin film on the base material 1, and can be easily anodized. For example, aluminum can be used to form a thin film on a substrate by vapor deposition, and can be easily anodized or graded in an acid bath.

A substrate with an anodized conductive thin film layer is immersed in a solution or dispersion of a fluorescent dye or pigment, and a luminescent material is formed on the anodized conductive thin film layer by electrodeposition.

As the fluorescent dye or pigment 5, a phosphorescent material with a long afterglow and low attenuation of luminescence is preferable, such as thionin, safranin T, acridine yellow, acridine orange, rhodamine B, phenosafranin, fluorescein, eosin, thioflavin. and fluorescent pigments obtained by dissolving the fluorescent dye in a resin, polymerizing it, and granulating it.

The adhesive layer 8 can be obtained, for example, by solidly or partially adhering a thermoplastic adhesive, thermosetting, photocuring, or combined light and heat curing type adhesive, or by solidly pasting it after being coated with a protective film. I'll come. Further, these adhesives may be known ones and are not particularly limited.

The optical information recording carrier according to the present invention has a magnetic recording layer, an IC memory, an engraving, an image, a photograph, a character, a mark, an ink, an embossed character called an ink print, etc. on the front or back side of the card as necessary. You may. Furthermore, a hard coat can be applied to the surface of the transparent substrate to prevent scratches.

Next, FIG. 4 is a schematic configuration diagram showing an optical information reproducing apparatus using an optical cart as an example of an optical information recording carrier according to the present invention. Reference numerals 10 to 15 in FIG.
shows the same thing as FIG. 3.

Reference numeral 16 denotes an optical card, in which the light flux from the illumination light source 12 is incident on the optical cart I6, which emits signal light according to the emission intensity distribution in the information recording layer, and is sent to the sensor 1 by the imaging optical system 14.
5, and only the information is read out.

In this example, since illumination is performed by light emission from the information recording layer, there is an advantage that the influence of the tilt of the optical card 16 on information reading is small. Also, the imaging optical system 14
Since the optical axis of the image forming optical system 14 is set perpendicular to the optical card 16, a lens with an extremely small working distance can be used as the imaging optical system 14, so that it can be easily made compact. Furthermore, when using a two-dimensional sensor array as the sensor I5, the optical axis of the imaging optical system 14 should be set perpendicular to the optical cart 16 in order to avoid changes in magnification depending on the position on the sensor. is necessary.

FIG. 5 shows another example of the present invention, and is a schematic configuration diagram showing an optical information reproducing apparatus using an optical cart as an example of the optical information recording carrier according to the present invention. , reference numerals 10 to I5 indicate the same parts as in FIG. 1
Reference numeral 6 denotes a light cart, and the light beam from the illumination light [12 is incident on the light cart 16. Unlike in FIG. It is not designed in a similar way, but is configured to illuminate a different area. That is, it shows a format in which the position illuminated by the illumination light beam and the readout position of the imaging optical system are different.

In FIG. 5, when the optical card 16 moves in the direction of arrow A, the recording section P in FIG. 5 has already been illuminated, has moved, and is currently captured by the reading system. In addition, although the recording part Q has already been illuminated, it is currently neither illuminated nor captured by the reading system, but as it moves, the recording part Q is captured by the reading system following the recording part P. show something

Furthermore, the recording section R is currently receiving illumination, and as it moves, it is shown that it will be captured by the reading system next to the recording section Q.

In this example, the optical axis of the light source 12 and sensor 15 is the optical cart 1.
6, and if the distance between the two axes is sufficiently small and the attenuation of the luminous intensity when emitted by the illumination light energy from the light emitting body constituting the recording medium can be ignored, optical information can be obtained. Recordings can also be played back. Even in such a configuration, as described above, the recorded information is reproduced by transmitting signal light according to the emission intensity distribution to the sensor 15 using the imaging optical system 14.
An image is formed on the image and information is read out. As the user moves in the direction of arrow A, information on points P, Q, and H can be sequentially read out.

[Function] The optical information recording carrier of the present invention forms a resist pattern on the conductive FM film layer of the base material on which the conductive thin film layer is laminated, and fills the recesses of the resist pattern with a fluorescent dye or pigment. Since a light emitter pattern is formed by forming a light emitter pattern, and a transparent base material is laminated on the light emitter pattern via an adhesive layer, the external illumination light beam irradiated from the transparent base material side to the information recording surface is The information recorded by the density distribution of the light emitter pattern constituting the recording medium is partially emitted by the energy of the irradiated light, and the information is emitted from the information recording surface as a luminous intensity distribution and incident on the optical sensor. I can read it.

[Example] Hereinafter, the present invention will be explained in more detail with reference to Examples.

Example 1 A polycarbonate film having a length of 75 mm, a width of 95 mm, and a thickness of 300 μm was used as a base material, and a thickness of 0.1 mm was deposited on it by vacuum deposition. An aluminum layer of pus formed. After applying a positive photoresist (A2-1:150J, manufactured by Sibley) using the spin code method, an original plate arranged vertically and horizontally in a pattern of 20 or 30 squares was applied on top of it. A resist pattern was formed on the aluminum layer by 1:1 exposure and development.

The exposed aluminum layer was used as an anode, and a sulfuric acid bath (5wt%
) for anodizing (6V, 15 minutes).

Fluorescent dye Rhodamine B, toluene and Priory OMS
(vinyltoluene-acrylate resin) and 8:Io
After dispersing as a mixture of o:5 (weight ratio), a solvent was prepared by mixing and dispersing the mixture and Isopar H (manufactured by Esso) at a ratio of 1:80 (weight ratio). A resist patterned substrate with an anodized aluminum layer was immersed in the above solvent, and electrodeposition was performed (distance: 211cm, 100V).
), Rhodamine B was formed as a red fluorescent pattern on anodized aluminum.

A transparent base material of ultraviolet absorbing punctured polycarbonate measuring 75mm long, 95m5 wide, and 400tL thick was superimposed on the above patterned surface via vinyl chloride-vinyl acetate-maleic acid resin, and passed through a heated pressure bonding roll at 120°C. Pasted together. The surface of the transparent substrate was subjected to a heart coating treatment using an ultraviolet curing type heart coating agent (manufactured by Unidic DIC Corporation), and then punched out into a cart size (ISO standard) to produce an optical card.

[Effects of the Invention] As explained above, by adopting the configuration of the present invention, ■The reflected light of the illumination light on the optical information recording carrier does not directly become the information reading light, so that the inclination of the cart and the optical It is possible to create a structure that is resistant to system deviations.

(2) It is easy to manufacture and inexpensive because it is constructed based on the concentration distribution of the recording medium constituting the information recording surface or the luminescent material that emits light depending on the energy of externally irradiated light.

(2) According to the configuration of the present invention, the entire information reading system can be easily made thin and compact.

It can have the advantages of a rod.

Further, according to the present invention, it is possible to construct an ultra-thin optical card information reproducing device.

Furthermore, since reading is performed in a direction perpendicular to the cart, it is possible to construct a reading optical system that is resistant to card inclination.

Furthermore, since the recording medium used in the present invention is composed of a light-emitting layer and a pattern layer based on recorded information, it is easy to manufacture and the optical card can be manufactured at low cost.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of an optical information recording carrier according to the present invention, and FIGS. 2(a) to (d) are process diagrams showing an example of a method for manufacturing an optical information recording carrier according to the present invention. FIG. 3 is a schematic configuration diagram showing an optical information reproducing device using a conventional optical card, and FIGS. 4 and 5 each show an optical information reproducing device using an optical information recording carrier according to the present invention. It is a schematic block diagram. ■... Base material 2... Conductive thin film layer 3.
...Photoresist 4...Resist pattern 5.
...Fluorescent dye or pigment 6...Light emitter pattern 7...Transparent base material 8...Adhesive layer 9.16.
...Light cart lO...Stage +1...Roller 12...Light source 13...Illumination optical system
14... Imaging optical system 15... Sensor

Claims (1)

[Claims] A resist pattern is formed on the conductive thin film layer of the base material on which the conductive thin film layer is laminated, and a fluorescent dye or pigment is filled into the recesses of the resist pattern to form a luminescent pattern, and a luminescent pattern is formed on the luminescent pattern. A transparent base material is laminated with an adhesive layer interposed therebetween, and an illumination beam from the outside is irradiated onto the transparent base material to impart energy to the light emitter pattern and cause it to emit light, and the concentration distribution of the light emitter pattern is An optical information recording carrier characterized in that the recorded information is reproduced by converting the recorded information into a luminescence intensity distribution.