JPH11296083A - Display recording body and method of manufacturing the same - Google Patents

Abstract

(57) [Problem] To provide a display recording medium which is easy to create and post-write fine and high-precision display, and is particularly suitable for small display, and an industrially advantageous production method thereof. Kind Code: A1 A display recording medium used by being attached to a metal surface of a product having a metal surface, wherein the display recording body has at least a recording layer laminated on a transparent substrate. After pulling out the transparent film from the roll of the transparent film on which the adhesive film is laminated, at least a recording layer and a transparent protective layer are sequentially laminated on the surface thereof, and then once wound up in a roll shape, or as it is, display recording After cutting into a predetermined width as a body, the product is cut into a predetermined length and affixed to the metal surface of a product having a metal surface, and thereafter, a display is created by irradiating a laser beam.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display recording body and a method for manufacturing the same, and more particularly, to an optical recording type display recording body used by sticking to a metal surface of a product having a metal surface. The present invention relates to the manufacturing method.

[0002]

2. Description of the Related Art A bar code, which is one of display recording media, is:
For example, a POS (point of salon) that allows the user to enter the price with a simple operation instead of keying the product price into the register
es) Widely used as a system.

[0003] Bar code marking includes (a) a source marking method, (b) an in-store marking method,
There are (c) an in-house marking method and (d) an on-demand marking method. The method (a) is a method of creating a large number of bar codes of the same type by printing.
The above methods (b) to (d) are methods for creating a limited amount of individual barcodes by a printer.

[0004] However, the above-mentioned printing method and printer method have the following problems.

(1) It is difficult to create a small barcode that can be attached to a small product. (2) When information is additionally written on a product, ink jet printing is adopted. However, especially for a small product, it is difficult to perform additional writing by ink jet printing. (3) When it is necessary to add information such as history management, a barcode must be newly created and attached to the product each time. May occur, and there is a problem that the aesthetic appearance is impaired depending on the product.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to make it easy to create and add a fine and high-precision display, and to make a display record particularly suitable for a small display. It is an object of the present invention to provide a body and its industrially advantageous production method.

[0007]

Means for Solving the Problems As a result of intensive studies, the present inventors have found that the above-mentioned object can be easily attained if the optical recording technology conventionally known in the field of optical recording media is skillfully used. Were obtained, and the present invention was completed.

[0008] That is, a first gist of the present invention is a display recording medium used by being attached to a metal surface of a product having a metal surface, wherein at least a recording layer is laminated on a transparent substrate. And a display recording medium characterized by the following.

A second gist of the present invention is that at least a recording layer and a transparent protective layer are sequentially laminated on the surface of the transparent film while the transparent adhesive film is being drawn from the roll of the transparent film. After that, once wound up in a roll shape, or as it is, after cutting to a predetermined width as a display recording body, cut to a predetermined length, consisting of sticking to the metal surface of a product having a metal surface, and Thereafter, a display is produced by irradiating a laser beam.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.
First, the display recording medium according to the present invention will be described. The display recording medium according to the present invention is a display recording medium used by being attached to a metal surface of a product having a metal surface, and is formed by laminating at least a recording layer on a transparent substrate.

As the transparent substrate, a transparent film (sheet) is preferably used, and its constituent materials are high-density polyethylene, low-density polyethylene, polypropylene,
Ethylene-propylene copolymer, poly (1-butene),
Polyolefin such as poly (4-methylpentene), polystyrene, polyvinyl acetate, polyvinyl chloride, polyvinylidene chloride, vinyl polymer such as polyacrylonitrile, polyoxymethylene, polyether such as polyphenylene sulfone, polyethylene terephthalate, polyethylene butyrate, Polyester such as polycarbonate,
Examples include various polyamides.

Each of the above-mentioned materials is formed into a film by an appropriate processing method such as an extrusion molding method, a calendar method, a solvent casting method, an inflation method, a tenter method and the like. The thickness of the transparent film is usually 10 to 1000 μm,
Preferably, it is in the range of 50 to 500 μm.

The type of the recording layer is not particularly limited as long as it can be recorded by irradiation with a laser beam, and may be either a recording layer made of an inorganic substance or a recording layer made of an organic substance. A recording layer made of an organic substance is preferred.

The recording layer made of an inorganic material includes, for example, Tb-Fe-Co or Dy-F for recording by the photothermal magnetic effect.
A rare earth transition metal alloy such as e.Co is used. Also,
Chalcogen-based alloys such as Ge.Te and Ge.Sb.Te that change phases may also be used.

In the recording layer made of an organic substance, an organic dye is mainly used. Such organic dyes include macrocyclic azaannulene dyes (phthalocyanine dyes, naphthalocyanine dyes, porphyrin dyes, etc.), polymethine dyes (cyanine dyes, merocyanine dyes, squalilium dyes, etc.), anthraquinone dyes, azurenium dyes, and metal-containing dyes. Examples include azo dyes and metal-containing indoaniline dyes. In particular, metal-containing azo dyes are preferable because of their excellent durability and light resistance.

The organic dye-containing recording layer is usually formed by a coating method such as spray coating or roll coating. At this time, a solvent that does not affect the transparent film is used as the solvent, and specifically, alcohol solvents such as methanol, ethanol, and isopropanol, diacetone alcohol, and 3-hydroxy-3-methyl-2- Ketone alcohol solvents such as butanone, cellosolve solvents such as methyl cellosolve and ethyl cellosolve, perfluoroalkyl alcohol solvents such as tetrofluoropropanol and octafluoropentanol, and hydroxyester solvents such as methyl lactate and methyl isobutyrate are preferably used. .

On the surface of the recording layer, a transparent protective layer usually formed of, for example, a UV curable resin composition is formed.
Examples of the constituent resin of the UV-curable resin composition include unsaturated polyester, polyether acrylate, epoxy acrylate, urethane acrylate, spiroacetal acrylate, polybutadiene resin, and polythiol polyene resin.

The UV-curable resin composition contains neopentyl glycol diacrylate,
Bifunctional monomers such as diethylene glycol diacrylate and 1,6-hexanediol diacrylate; trifunctional monomers such as trimethylolpropane triacrylate and pentaerythritol triacrylate; and other functional monomers such as dipentaerythritol hexaacrylate Can be mixed.

As the photopolymerization initiator compounded in the UV curable resin composition, acetophenones, benzophenone, Michler's ketone, benzoin, benzyl methyl ketal,
Benzoyl benzoate, α-amyloxime ester,
Examples include tetramethylthiuram monosulfide and thioxazones, and examples of the photosensitizer include n-butylamine and tri-n-butylphosphine. In addition, examples of the solvent used for preparing the UV-curable resin composition include alcohols, ketones, esters, and aromatic compounds.

The thickness of the recording layer is usually from 10 to 100.
0 nm, preferably 50 to 200 nm, and the thickness of the transparent protective layer is usually 0.5 to 50 μm, preferably 5 to 20 μm.
Range.

The display recording medium configured as described above is sized to have a predetermined size as a display recording medium and is attached to the metal surface of a product having a metal surface. This is performed via a transparent adhesive layer using a transparent film (transparent adhesive film) that exhibits adhesiveness by heat (or a solvent) or heat (or a solvent). The transparent adhesive layer may be formed on the product side, or may be formed on the surface of the display recording body side (transparent substrate).

As the transparent adhesive, urethane-based adhesives,
Acrylic-based, polyester-based, and the like can be mentioned. Examples of the transparent heat-adhesive film include ethylene-vinyl acetate copolymer (EVA) and unstretched polypropylene film (CP
P), ethylene-ethyl acrylate (EEA), ethylene-acrylic acid copolymer (EAA) and the like.
The transparent heat-adhesive film has a temperature of 200 ° C. or less, preferably 1
Those capable of exhibiting sufficient adhesive strength at a temperature of 50 ° C. or less are preferred. In particular, EVA is suitably used because it can exhibit the adhesive strength required for a display recording medium at a temperature of about 100 ° C. The thickness of the transparent adhesive film is usually 10
５００500 μm, preferably 50-100 μm.

In the case of the above-mentioned display recording medium, since the irradiation of light described later is usually performed from the transparent substrate side, when the above-mentioned transparent adhesive layer is formed on the display recording body side, the transparent adhesive layer is formed of a transparent protective layer. Laminated on the surface of the layer. That is, the layer configuration in this case is: transparent substrate / recording layer / transparent protective layer / transparent adhesive layer / metal surface described later. The transparent adhesive layer may be omitted by selecting a material having adhesiveness as a material of the transparent protective layer. When a transparent adhesive layer is formed on the surface of the transparent substrate (in the case of a metal surface / transparent adhesive layer / transparent substrate / recording layer / transparent protective layer), light irradiation is performed from the transparent protective layer.

Examples of the product having a metal surface to which the display recording medium according to the present invention is applied include aluminum can products, gold or silver plated products, and some of the products have the above-mentioned properties. It may be a product using metal. The metal surface to which the display recording body according to the present invention is attached has a function as a metal reflective layer in an optical recording medium. That is, in the case of the present invention, it is not necessary to provide a metal reflective layer required in an optical recording medium. Therefore,
It is preferable that the metal surface to which the display recording medium is adhered is previously cleaned. Incidentally, the metal surface in the present invention,
The surface does not need to be the surface of the metal itself, and may be, for example, the surface of the transparent layer of a metal surface provided with a transparent layer of transparent glass or resin.

In the display recording medium according to the present invention, creation of a display, that is, writing (recording) of information is performed by a laser beam converged to about 1 μm. That is,
Recording is performed on the laser beam irradiated part (recording part) of the recording layer.
It is performed by melting, evaporation, sublimation, deformation, denaturation and the like. Then, reading (reproducing) reproduction of information is performed by reading the difference in reflectance between the laser light irradiated portion and the non-irradiated portion using the same laser light as described above. Further, information can be additionally written in the same manner as the above-described recording. The laser beam is not particularly limited, but a semiconductor laser beam is preferably used. In addition,
The displayed contents include barcodes, various characters, figures,
Can include symbols

The above-described display is created after the display recording medium is attached to the metal surface of a product having a metal surface, as described later. In the display recording medium according to the present invention, since the optical recording technology is skillfully used by using the metal surface of the product as the metal reflection layer, it is easy to create and add a fine and highly accurate display. It is.

Next, a method for manufacturing a display recording body according to the present invention will be described. The production method according to the present invention is characterized in that, while a transparent adhesive film is laminated, a transparent film is pulled out of the transparent film, and at least a recording layer and a transparent protective layer are sequentially laminated on the surface of the transparent film, and then temporarily rolled. Or, as it is, cut to a predetermined width as a display recording body, cut to a predetermined length, and affixed to the metal surface of a product having a metal surface, and then, Create a display by irradiation.
Such a manufacturing method is excellent in handling of a transparent film usually dealt as a roll because it is a long product.

The transparent film on which the transparent adhesive film is laminated is usually obtained by a coextrusion lamination method. The drawing of the transparent film from the roll is performed with an appropriate tension applied. During the running, the recording layer and the transparent protective layer are sequentially laminated according to the method described above. The display is created by irradiating a laser beam from the transparent protective layer side. That is, the layer configuration in this case is: metal surface / transparent adhesive film layer / recording layer / transparent protective layer.

[0029]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to the following examples unless it exceeds the gist of the present invention.

Example 1 A recording layer made of a metal-containing azo dye was formed on the surface of a polyester (PET) film having a thickness of 1 μm and a width of 1 μm, on which EVA having a thickness of 20 μm was laminated. 100 nm) and a transparent protective layer (5 μm) made of an ultraviolet curable resin were sequentially laminated.

The above-mentioned recording layer was formed by spray-coating a solution of a metal-containing azo dye, followed by drying at 100 ° C. for 30 minutes. The protective layer was formed by spray-coating a solution of an ultraviolet-curable resin (“SD-301” manufactured by Dainippon Ink and Chemicals, Inc.) and then irradiating with ultraviolet rays to cure the resin.

Then, once rolled up into a roll, 3 cm
After cutting to width, each cutting tape was wound up again in a roll. The obtained tape was cut into a width of 3 cm, and affixed to a flat portion of a silver-plated trophy via an EVA with a heat sealer at 100 ° C. The adhesion by EVA was good. Then, a bar code was created by irradiating a semiconductor laser beam having a center wavelength of 780 nm from the transparent protective layer side at a recording power of 6.6 mW. Incidentally, the layer configuration in this case is as follows: silver-plated surface / EVA layer / PET layer /
It becomes a recording layer / transparent protective layer.

Then, the bar code was reproduced by a self-made bar code reader (bar code operation device) equipped with a semiconductor laser having the same wavelength as the above, and as a result, a good reproduced signal was obtained.

[0034]

According to the present invention described above, it is easy to create and additionally write a display with fine and high accuracy, and a display recording medium particularly suitable for a small display and an industrially advantageous manufacturing method thereof are provided. The present invention greatly contributes to the product management field.

Claims (5)

[Claims] 1. A display recording medium used by sticking to a metal surface of a product having a metal surface, wherein the recording medium comprises at least a recording layer laminated on a transparent substrate. 2. The display recording medium according to claim 1, wherein the recording layer is formed of an organic dye. 3. The display recording body according to claim 1, wherein a transparent protective layer is laminated on the surface of the recording layer. 4. The display recording medium according to claim 1, wherein the transparent protective layer has an adhesive property or a transparent adhesive layer is formed on a surface of the transparent protective layer. 5. A method in which at least a recording layer and a transparent protective layer are sequentially laminated on the surface of the transparent film while the transparent film is being drawn from the roll of the transparent film on which the transparent adhesive film is laminated. Or, as it is, cut into a predetermined width as a display recording body, cut into a predetermined length, and affixed to the metal surface of a product having a metal surface, and thereafter, displayed by laser light irradiation A method for producing a display recording body, comprising: