JPH0749625Y2 - Transfer type optical recording medium - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a transfer type optical recording medium, and more particularly, to a thermal transfer label or an adhesive which can easily and easily attach an optical recording part to any article. The present invention relates to a transfer type optical recording medium such as a label.

(Prior Art and Its Problems) Conventionally, a magnetic recording method has been widely used as a method for recording information on a credit card, a bank card, an ID card, or the like. The magnetic recording method has an advantage that information can be easily read and written, but the information recording density is insufficient, and the recorded information can be easily tampered with. There is.

As a method for solving such a drawback, an optical recording method has been proposed, and the above problem is easily solved by this method. However, a recording medium of such a recording method is, for example, a card substrate or the like. Limited to specific materials and shapes such as plastic sheets and films, and difficult to reproduce in large quantities, for example, catalogs of products for which various information inputs are required, books, printed matter, and other various products, There is a problem that it is difficult to apply it to the packaging easily and simply, and therefore the degree of its spread is inferior to that of the magnetic recording method.

Therefore, an object of the present invention is not limited to a specific material and shape such as a card substrate, and is to provide a technique capable of easily and easily providing an optical recording portion to any article.

(Means for Solving Problems) The above object is achieved by the present invention described below.

That is, according to the present invention, a peelable substrate sheet, a protective layer, an optical recording layer, a reflective layer and an adhesive layer are laminated in this order,
A transfer type optical recording medium, which is characterized in that information obtained by digitizing characters and patterns is recorded on the optical recording layer, and a release paper, an adhesive layer, a reflective layer, an optical recording layer and a protective layer. The transfer type optical recording medium is characterized in that the optical recording layer is laminated in the order described, and information such as characters and pictures is converted into digital signals on the optical recording layer.

(Function) By making the optical recording portion transferable, the optical recording portion can be easily provided to any article without being limited to a specific material and shape such as a card substrate.

Moreover, in a preferred embodiment, recording of information on the optical recording layer can be performed by a transfer method, and therefore, large-scale copying is easy and an optical information section can be provided to any article at low cost.

(Example) Next, an Example is given and this invention is demonstrated in more detail.

One example of the transfer type optical recording medium of the present invention is a thermal transfer type,
As shown in the cross-sectional view in FIG. 1, a releasable base sheet 1, a protective layer 6, an optical recording layer 2, a reflective layer 3 and a heat-sensitive adhesive layer 4 are laminated in this order, On the recording layer 2, information 5 in which characters and patterns are converted into digital signals is recorded.

The releasable substrate sheet 1 is a plastic film such as a polyester film or a sheet substrate such as a sheet or paper, and may have a certain level of strength, heat resistance, moisture resistance and the like. The releasable substrate sheet used for the transfer foil or the like can be used as it is.

Since the releasable base sheet 1 and the protective layer 6 need to be releasably adhered to each other, when the base sheet 1 has sufficient releasability, the releasable base sheet 1 and the protective layer 6 may be attached to the base sheet 1 on the base sheet 1. The protective layer 6 may be directly laminated, but in the case of paper, for example, it is necessary to use release paper having a release layer (not shown) formed on its surface.

The protective layer 6 is a base material layer for forming the information 5 on the optical recording layer 2, and is transferred to a transfer material together with other layers during transfer,
It forms a protective layer (top coat layer) of the optical recording layer 2 after transfer, and is formed of a material having excellent durability such as chemical resistance, stain resistance, and abrasion resistance, and a light transmissive material. Examples of such a material include known resins such as polycarbonate resin and polyester resin.

On the optical recording layer 2 formed on the surface of the protective layer 6, necessary information such as characters and pictures is recorded as a digital signal 5 on the surface. The recording of the information 5 can be carried out by various conventionally known methods, but as a preferable example, the optical recording layer 2 is made of a thermoplastic electron beam curable resin which is solid and transparent at room temperature. On the other hand, on the other hand, an original plate on which necessary information is recorded is prepared by, for example, a photolithography method, and the original plate is optically pressed against the surface of the optical recording layer 2 so that the information on the original plate is optically exposed. A method of transferring to the recording layer 2 and then curing the optical recording layer 2 with an electron beam can be mentioned. Of course, the formation of the optical recording layer 2 is not limited to the electron beam curable resin, and a thermoplastic resin, an ultraviolet curable resin, a thermosetting resin or the like can be similarly used. This method is preferable because it is easy to copy a large amount of information.

Further, the information 5 to be recorded may be any information as long as it digitizes a character, a pattern, or the like, and when the reading light such as a laser light is irradiated on the digital signal, the reflectance of the light is selectively changed. For example, a fine concavo-convex pattern, a light scattering pattern, or the like is arbitrary, and these information may be read-only information or writable / rewritable information.

The optical recording layer 2 can be formed by a resin coating method or a film laminating method as described above, and the thickness thereof is arbitrary, but, for example, it is generally about 1 to 10 μm.

The light reflection layer 3 formed on the surface of the optical recording layer 2 reflects the read light incident on the optical recording layer 2 after transfer, and the change in the intensity or direction of the reflected light is caused by the above light. This is performed by the digital signal 5 recorded on the recording layer 2. The reflective layer 3 can be easily formed by, for example, vapor deposition of a metal such as aluminum or silver, and has a preferable thickness of about 0.1 to 5 μm.

As the adhesive layer 4 formed on the surface of the reflective layer 3, the heat-sensitive adhesive used in the conventional transfer foil or the like can be used as it is. The thickness of these adhesive layers 4 is arbitrary as long as it can exhibit a desired function, but for example, it is generally about
It is in the range of 0.5 to 10 μm.

FIG. 2 is a view for explaining a method of using the heat-sensitive transfer type optical recording medium of the present invention, in which the transfer type optical recording medium of the present invention is used as a transfer target material 7 (for example, printed matter, books, plastics). Molded articles, metal products, their packaging containers, wrapping paper, etc., such as types, materials, shapes, etc. are not limited at all), the adhesive layer 4 is placed on the desired surface so as to face each other, and heated and adhered, Then, by peeling the releasable base sheet 1, the layer including the optical recording layer 2 is transferred onto the surface of the article which is the material 7 to be transferred. After such transfer, the protective layer 6 is located on the outermost surface of the transfer layer to protect the optical recording layer 2.

FIG. 3 is a diagram schematically illustrating the adhesive optical recording medium of the present invention. In this embodiment, the release paper 8, the adhesive layer 4,
The reflective layer 3, the optical recording layer 2 and the protective layer 6 are laminated in this order, and the optical recording layer 2 is recorded with information 5 in which characters, patterns and the like are converted into digital signals.

The release paper 8 may be the same release paper as that used in a conventionally known adhesive label, or may be the above-mentioned releasable substrate sheet. The pressure-sensitive adhesive layer 4 is also formed from the same pressure-sensitive adhesive as that used in the conventional pressure-sensitive adhesive label.

In the method for producing such an adhesive optical recording medium, the adhesive layer 4 is formed in place of the heat-sensitive adhesive layer 4 in the above-mentioned embodiment, the release paper 8 is attached to the surface thereof, and the release sheet 1 is removed. May be the same as in the above embodiment, and the pressure-sensitive adhesive layer 4, the reflective layer 3, the optical recording layer 2 and the protective layer 6 are sequentially formed on the release paper 8.
Similarly, a method of recording the information 5 on the optical recording layer 2 may be used, and the forming method is not particularly limited.

Further, the method of transferring to the transfer material is performed by peeling the release paper and adhering the exposed adhesive layer toward the desired surface of the transfer material.

To read information from the optical recording portion transferred as described above, read the information by irradiating and scanning the optical recording layer with reading light such as laser light and detecting the reflectance change of the reflected light with a sensor. Good.

(Effects) According to the present invention as described above, by making the optical recording portion transferable, the optical recording portion is not limited to a specific material such as a card base material and can be easily provided to any article. I can.

Moreover, in a preferred embodiment, recording of information on the optical recording layer can be performed by a transfer method, and therefore, large-scale copying is easy and an optical information section can be provided to any article at low cost.

[Brief description of drawings]

1 and 3 are schematic views for explaining the cross-section of the transfer type optical recording medium of the present invention, and FIG. 2 is a view for schematically explaining the method of use. 1: Peelable substrate sheet, 2: Optical recording layer 3: Reflective layer, 4: Adhesive layer 5: Information, 6: Protective layer 7: Transfer material, 8: Release paper

Claims (3)

[Scope of utility model registration request] 1. A peelable substrate sheet, a protective layer, an optical recording layer, a reflective layer and an adhesive layer are laminated in this order, and the optical recording layer contains information in which characters and pictures are converted into digital signals. A transfer type optical recording medium characterized by being recorded. 2. The transfer type optical recording medium according to claim 1, wherein a release layer is formed between the release base sheet and the protective layer. 3. A release paper, a pressure-sensitive adhesive layer, a reflective layer, an optical recording layer and a protective layer are laminated in this order, and the optical recording layer has recorded therein information such as characters and pictures converted into digital signals. A transfer type optical recording medium characterized in that