JP2003191656A - Intermediate transfer recording medium and card production method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an intermediate transfer recording medium capable of having images excellent in various durabilities such as chemical resistance, water resistance, abrasion resistance, light resistance or the like, and a card production method. <P>SOLUTION: The intermediate transfer recording medium is obtained by forming a bonding layer (image receiving layer) on a substrate sheet via a release layer or peeling layer, wherein the bonding layer is made from a mixture formed of a polyester resin and vinyl chloride-vinyl acetate copolymer and polyisocyanate, and at least one of the two kinds of resins has a group to react with a isocyanate group. The method for producing a card employs the intermediate transfer recording medium. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intermediate transfer recording medium and a method for manufacturing a card, and more specifically, it has excellent durability such as chemical resistance, water resistance, scratch resistance and light resistance on the surface of a card substrate. The present invention relates to a method for manufacturing an intermediate transfer recording medium and a card capable of imparting an improved image.

[0002]

2. Description of the Related Art Conventionally, various character information and various patterns are printed on a card base material. Of this information,
The common information common to a large number of sheets can be formed by a general-purpose printing method such as offset printing or gravure printing, but personal identification characters, face photographs, etc. cannot be cost-effective with the general-purpose printing method. Conventionally, printing such individual information is
A sublimation type thermal transfer system, a thermal fusion type thermal transfer system, an inkjet system, etc. are used to perform print formation according to a digital signal corresponding to image information.

The recording of individual information based on the above digital signal is widely adopted because an expensive device is not required even when the number of cards is small, for example, printing for each card. However, since the recording material used in these sublimation-type thermal transfer methods and inkjet methods capable of forming gradation images is a dye, the formed images have chemical resistance, water resistance, and There is a problem that it is inferior in various durability such as scratch resistance and light resistance. On the other hand, although the image formation by the heat fusion type thermal transfer system is suitable for printing characters and the like, it is not suitable for forming excellent gradation images such as landscapes and face photographs.

Although the above problems can be solved to some extent by forming a transparent protective layer having various durability on the image forming surface, the problem of light resistance cannot be solved. As yet another problem, when creating a card or the like, usually a pattern sample is first created, presented to the customer, and various calibrations are made as necessary, and a product is created based on the calibration sample. Delivered to the customer. However, it is complicated to further calibrate the color tone and the like after creating such a pattern sample, and it is not easy to create a card having the same color tone and image as the proof sample.

Therefore, an object of the present invention is to provide an intermediate transfer recording medium and a method for producing a card capable of imparting an image excellent in various durability such as chemical resistance, water resistance, scratch resistance and light resistance. It is to be.

[0006]

The above object can be achieved by the present invention described below. That is, in the present invention, an adhesive layer (image receiving layer) is provided on a base sheet with a release layer or a release layer interposed therebetween.
Wherein the adhesive layer is composed of a mixture of a polyester resin and a vinyl chloride-vinyl acetate copolymer and polyisocyanate, and at least one of the two resins has a group capable of reacting with an isocyanate group. After forming an image on the intermediate transfer recording medium characterized by the above, and the adhesive layer of the intermediate transfer recording medium, an adhesive concealing layer is provided on at least a part of the image surface, and the concealing layer is made to face the card substrate. A method for manufacturing a card is provided, in which the base material sheet of the intermediate transfer medium is peeled off by thermocompression bonding.

In the above-mentioned image forming method, an ink sheet having an ink layer on a base material sheet is superposed on an adhesive layer of an intermediate transfer recording medium, and thermal energy for image information is applied from the back surface of the ink sheet. It is preferable to transfer the ink layer of the acted portion to the adhesive layer to form an image on the adhesive layer. Further, when the image is a color image, the ink layer of the ink sheet is at least one color component of the color components forming the color image,
And it is preferable that the thermal energy is applied by scanning a laser beam corresponding to image information.
According to such a method, the problem of light resistance in the case of using the conventional sublimation transfer method, the color matching and proofreading of the picture sample become easy, and a product having exactly the same color tone as the calibrated image is produced. be able to.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail with reference to the following preferred embodiments. FIG. 1 is a diagram schematically illustrating the basic structure of an intermediate transfer recording medium of the present invention.
In the intermediate transfer recording medium of the present invention, a first adhesive layer (image receiving layer) 3 is formed on one surface of a base material sheet 1 via a release layer (or release layer) 2 so as to be removable, and The adhesive layer 3 is composed of a mixture of a polyester resin and a vinyl chloride-vinyl acetate copolymer and polyisocyanate, and at least one of the above two kinds of resins has a group capable of reacting with an isocyanate group. This first adhesive layer 3 needs to be substantially transparent.

FIG. 2 shows the first adhesive layer 3 of the intermediate transfer medium.
2 shows an example of a method for forming a required image 4 on the surface of the. The method for forming the image may be a sublimation type thermal transfer system, a thermal fusion type thermal transfer system, an inkjet system, or any other system. However, when the light resistance of the image to be formed is taken into consideration, a pigment is colored. It is preferable to form an image using the agent. For example, as shown in FIG. 2, an ink sheet having an ink layer B on a base sheet (or film) A, the ink layer B being the first adhesive layer 3 of the intermediate transfer recording medium.
And a laser beam C corresponding to image information is irradiated from the back surface of the ink sheet to transfer a part of the ink layer B to the first adhesive layer 3 in a pattern. When the image 4 is a color image, this operation is repeated using ink sheets of yellow, magenta, cyan and, if necessary, black color, so that the first adhesive layer 3 can be coated with 3
A color image of primary colors or four primary colors can be formed. The laser light C acts as a heat source for thermally melting and transferring that portion by applying thermal energy to the ink sheet in spots. The spots of the laser light C correspond to the halftone dots of the printing, whereby the halftone dot image 4 of each color is formed on the first adhesive layer 3.

According to the above method, the ink sheet is
Since it can be mass-produced by ordinary coating technology, there is no problem in cost per se. Moreover, since a pigment can be used as a colorant, the problem of light fastness of an image, which is the greatest problem of the conventional art, can be easily solved.
Further, since the surface on which the image is formed is the first adhesive layer having adhesiveness as described above, the dot-shaped colored layer transferred from the ink sheet is satisfactorily adhesively transferred to the first adhesive layer. Furthermore, since the ink layer is transferred using laser light based on a digital signal corresponding to the image information, it is possible to reproduce an image that is exactly the same as the customer's calibration sample, and the complexity of conventional technology based on color samples and calibration. Is eliminated.

FIG. 3 shows a state in which the second adhesive layer 5 and the third adhesive layer 6 are provided on the image surface formed as described above.
The second adhesive layer 5 preferably has a concealing property. For example, a magnetic recording layer provided on a card substrate by printing an adhesive containing a white pigment, a gold pigment, a silver pigment or the like on a silk screen. It is preferable to hide (reference numeral D in FIGS. 4b and c). The second adhesive layer 5 may be provided on the entire image surface, or a part of the second adhesive layer 5 may be transparently provided as the third adhesive layer 6. For example, when an image is formed on the card substrate, the image is observed from the surface through the transparent adhesive layer 6.

The intermediate transfer medium provided with the second adhesive layer (or the third adhesive layer) as described above is thermocompression-bonded with the adhesive layer facing the card substrate shown in FIG. A desired card is created by peeling the base material sheet 1 of the transfer medium. At this time, the first adhesive layer is cross-linked by the polyisocyanate by the heat in the thermocompression bonding, and the adhesion between the first adhesive layer and the image is further improved. When the reference numeral 2 is a release layer, the release layer 2 is released from the base sheet 1 and transferred to the card base side together with the first adhesive layer to form the outermost surface of the finally obtained image. . Further, when the reference numeral 2 is a release layer, the release layer 2 remains on the base material sheet side. Such a card can be submitted to a customer as a sample, and when the card is calibrated, the calibrated information can be added to the digital image signal to easily provide the customer with a product satisfying the customer's request. Since the calibration information at this time is converted into a digital signal, the image quality requested by the customer can be accurately reproduced.

Next, constituent materials of the intermediate transfer recording medium of the present invention, constituent materials at the time of making a card, and a card manufacturing method will be described. (Substrate sheet) As the substrate sheet 1 of the intermediate transfer recording medium of the present invention, the same substrate sheet as used in the conventional thermal transfer sheet can be used, but preferred examples are polyethylene terephthalate film and polypropylene film. Is mentioned. The thickness of these base material sheets can be appropriately selected according to the material so that the strength, thermal conductivity, heat resistance, etc. are appropriate, but usually 1 to 1
Those having a diameter of about 00 μm are preferably used.

(Release Layer) A release layer (release layer) 2 is formed on one surface of the base sheet 1. The peeling layer 2 is peeled off at the interface with the base material sheet 1 when the first adhesive layer is transferred to the card base material, and is transferred onto the card base material together with the first adhesive layer. As a result, it is located on the outermost surface of the first adhesive layer having the image transferred onto the card substrate, and improves the weather resistance of the image and the durability against fingerprints, chemicals, and the like.

The release layer is typically ethyl cellulose,
Cellulose derivatives such as nitrocellulose and cellulose acetate, acrylic resins such as polymethylmethacrylate, polyethylmethacrylate and polybutylacrylate, polyvinyl chloride, vinyl chloride-vinyl acetate copolymer, vinyl polymers such as polyvinyl butyral. Thermoplastic resin,
It can be formed using a thermosetting resin such as an unsaturated polyester resin, a polyurethane resin, or an aminoalkyd resin.

The release layer 2 comprises a bar coater, a gravure printing method, a screen printing method, a gravure plate, and an ink prepared by dissolving or dispersing the above resin in a solvent such as water or an organic solvent on the above base sheet 1. It can be formed by applying by a usual method such as a reverse roll coating method using. The coating amount is such that the film thickness after coating and drying is 0.1 to 10.
It is desirable that the thickness be 20 μm.

(First Adhesive Layer) The first adhesive layer 3 is formed on the release layer 2 so as to be peelable from the base sheet 1. The first adhesive layer is a mixture of a polyester resin (resin A) and a vinyl chloride-vinyl acetate copolymer (resin A),
It is formed from a mixture of at least one resin which is a resin having a group that reacts with an isocyanate group (a hydroxyl group and / or a carboxyl group), and polyisocyanate.
Examples of the resin A include polyester resins obtained from Toyobo under the trade names Byron 200, Byron 270, etc., and examples of the resin B include resins obtained under the trade name Vinylite VAGH from Union Carbide. Can be mentioned.

When the resin A and / or the resin B has a group capable of reacting with an isocyanate group, the content of the reactive group is 2 to 15% by weight of the resin, preferably 3 to 10%.
% By weight. Expressed in terms of hydroxyl value, 2 to 60 KOHmg
/ G, preferably 3 to 10 KOHmg / g. The weight average molecular weight of the resin A is 2,000 to 50,000,
It is preferably 10,000 to 30,000. Resin A
Has a Tg of −20 to 90 ° C., preferably 40 to 80 in order to have blocking resistance by mixing with Resin B.
℃. The weight mixing ratio of the resin A and the resin B is A: B.
= 10-90: 90-10 is a preferable range. In the above ratio, if the polyester resin is too small, the first
When the image receptivity to the adhesive layer is insufficient, on the other hand, when the amount of the polyester resin is too large, a blocking problem occurs.

Examples of the polyisocyanate used in combination with the above resin mixture include general-purpose polyisocyanates used in the field of adhesives and coatings. Specifically, tolylene diisocyanate, 4,4'-diphenylmethane diisocyanate, xylylene diisocyanate, 4,4 '
-Aromatic diisocyanates such as methylenebis (cyclohexylisocyanate), hexamethylene diisocyanate, lysine diisocyanate, isophorone diisocyanate, aliphatic diisocyanates such as trimethylhexamethylene diisocyanate, and dimers, trimers or water thereof, Trimethylolethane,
Reaction products with polyhydric alcohols such as trimethylolpropane, and blocked products of the above polyisocyanates are mentioned. These polyisocyanates are preferably used in a ratio of about 1 to 10 parts by weight per 100 parts by weight of the resins A and B.

The first adhesive layer 3 is formed by dissolving or dispersing the resins A and B and the polyisocyanate in a solvent such as a suitable organic solvent, and if necessary, microsilica or silica which does not impair transparency. , Alumina, clay,
It can be formed by applying an ink to which an extender pigment such as calcium carbonate or barium sulfate is added by a usual method such as a bar coater, a gravure printing method, a screen printing method, or a reverse roll coating method using a gravure plate. The coating amount is preferably such that the film thickness after coating and drying is 1 to 5 μm. A preferred extender pigment has an average particle size of 0.1 to 5 μm, preferably 0.5 to 3 μm.
Or a surface-treated microsilica.

(Image Forming Method for First Adhesive Layer) The image forming method may be any method as described above, but from the viewpoint of light resistance, an ink sheet in which a base sheet is coated with an ink layer containing a pigment as a coloring agent. Is preferred.
In a preferred embodiment, as shown in FIG. 2, an ink sheet having an ink layer made of a pigment-based colorant formed on a polyethylene terephthalate film A is overlaid with the ink layer B facing the first adhesive layer. Laser light C corresponding to image information is irradiated from the back surface of the sheet, and the ink layer in the irradiated portion is transferred to the first adhesive layer. At this time, the ink layer B is heated and softened by the laser light C, and the first adhesive layer is also heated and softened, the ink layer in the irradiation region is transferred, and the first adhesive layer is crosslinked with polyisocyanate. Therefore, the ink layer is transferred with good foil cutting property. By repeating this operation using the ink sheet of each color corresponding to the three-color or four-color separation plate for the required separation plate, a desired mono-color or full-color image is formed.

(Second Adhesive Layer or Third Adhesive Layer) The second adhesive layer has a function of adhering and transferring the above-mentioned first adhesive layer image-formed to the card base material, and also preliminarily attached to the card base material. It has a function of concealing the formed magnetic recording layer D (FIG. 4). The second adhesive layer is made of a heat-sealable resin such as polyester, polyamide, polyvinyl acetate, ethylene / vinyl acetate copolymer, vinyl acetate / vinyl chloride copolymer, etc., with a white pigment, a gold pigment, a silver pigment, A pigment having a high hiding property such as a pearl pigment is added, and the mixture is melted or made into an ink by using a suitable solvent and applied by an arbitrary method, or a sheet made of a pigment-containing heat-sealing material is used. When the second adhesive layer is provided in a pattern, it is provided by silk screen printing or the like. When the second adhesive layer is provided in a pattern, as shown in FIG. 4c, the removed region is formed from a transparent heat seal material to the third adhesive layer 6.
And an adhesive layer is provided on the entire image surface. Such a second
Alternatively, the thickness of the third adhesive layer is about 1 to 5 μm.

(Card Base Material) The card base material used in the present invention is polyvinyl chloride, polyester, polycarbonate, polyamide, polyimide, cellulose diacetate, cellulose triacetate, polystyrene resin,
In addition to acrylic resins, polypropylene, polyethylene, and other resins, aluminum, copper, and other metals, paper, and
A single sheet of resin or latex impregnated paper, or a composite sheet can be used.

The thickness of such a base sheet varies depending on the material, but is usually in the range of about 10 μm to 5 mm. Particularly in the case of a card, when the base material sheet conforms to the ISO standard, the thickness thereof is 0.76 mm. Then, the substrate sheet is made of polyvinyl chloride (hereinafter referred to as "P
VC)), the thickness is usually 280 μm
Of the white PVC sheet as a core sheet, two of them are laminated, and a transparent PVC sheet having a thickness of 100 μm is laminated on both sides thereof as an oversheet, and laminated by a heat press or the like to form a four-layer base material sheet (total thickness: 0.76m
m) is used.

(Transfer of Image to Card Base Material) Second
The intermediate transfer medium provided with the (and third) adhesive layer is superposed on the card base material by thermocompression bonding, and then the base material sheet is peeled off to obtain a card as shown in FIG. 4c.
The thermocompression bonding is performed with a heating roll at a temperature of about 100 to 160 ° C.,
It can be performed with a hot press or the like. By this thermocompression bonding, the second (and third) adhesive layer is activated and the image is transferred to the card base material, and the first adhesive layer is sufficiently crosslinked by the heat during thermocompression bonding. As a result, there is no fear of peeling the image bearing layer from the card substrate during handling of the resulting card.

[0026]

EXAMPLES Next, the present invention will be described more specifically with reference to Examples and Comparative Examples. In addition, "part" or "%" in the sentence
Unless otherwise specified, the weight is based on the weight. Example 1 A coating solution for a release layer having the following composition was applied to the surface of a biaxially stretched transparent polyethylene terephthalate (PET) film having a thickness of 75 μm by a gravure reverse coating method so that the film thickness after drying was 1 μm, and dried. To form a release layer.

Composition of release layer coating solution: -Dialal BR-83 (manufactured by Mitsubishi Rayon) 80 parts-Vinylite VAGH (manufactured by Union Carbide) 20 parts-Toluene 115 parts-Methyl ethyl ketone 115 parts Additives such as waxes and extender pigments may be blended as long as they are a resin system such as acrylic resin / bivinyl chloride resin, acrylic resin, and cellulose that can be peeled off with a substrate sheet.

A first adhesive layer coating liquid having the following composition was applied onto the release layer by a gravure reverse coating method so that the film thickness after drying was 3 μm, and dried to form a first adhesive layer. Composition of coating liquid for first adhesive layer: -Byron 200 (manufactured by Toyobo) 165 parts-Vinylite VAGH (manufactured by Union Carbide Co.) 135 parts-Cyclohexanone 560 parts-Isophorone 140 parts-Xylylene diisocyanate 75 parts

On the other hand, three color gravure inks of yellow, magenta and cyan were applied on the surface of a biaxially stretched transparent polyethylene terephthalate (PET) film having a thickness of 25 μm to prepare ink sheets for three colors. The yellow ink sheet is superposed on the surface of the first adhesive layer, and a color image output device called a so-called laser type digital direct color proof device is used from the back side of the ink sheet to print a color image including characters and gradation images. An image of a yellow component was transferred in accordance with a signal obtained by converting the image information into a digital signal, and similarly, by repeatedly using an ink sheet corresponding to each color of magenta and cyan, a full color image was reproduced.

A silver ink of the following composition was applied over the entire surface of the image by a gravure roll so that the film thickness after drying was 5 μm and dried to form a second adhesive layer. Silver ink composition: ・ Vinylite VAGH (made by Union Carbide) 19 parts ・ Aluminum paste 8NL (made by Asahi Kasei Corporation) 25 parts ・ Cyclohexanone 26 parts ・ Swazol 1000 30 parts

Next, as shown in FIG. 4b, the thickness is 280 μm.
Of the white vinyl chloride core sheet, a transparent vinyl chloride oversheet having a thickness of 100 μm on one side so as to be in contact with the core sheet, and a vinyl chloride oversheet on which a magnetic tape is thermally transferred in advance, and the intermediate transfer medium on which the image is formed. The second adhesive layer is faced and overlapped, and the temperature is 150 ° C and the pressure is 25k.
The hot pressing was performed under the conditions of g / cm ² for 15 minutes, and then the base sheet of the intermediate transfer medium was peeled off. Finally JI
A card of the present invention was obtained by punching into an S size (86 mm x 54 mm).

Example 2 A card of the present invention was obtained in the same manner as in Example 1 except that the following coating liquid was used instead of the first adhesive layer coating liquid in Example 1. Composition of coating liquid for first adhesive layer: -Byron 200 (manufactured by Toyobo) 165 parts-Vinylite VAGH (manufactured by Union Carbide Co.) 135 parts-Cyclohexanone 560 parts-Isophorone 140 parts-Microsilica 2.5 parts-Xylylene diisocyanate 75 parts

Example 3 A card of the present invention was obtained in the same manner as in Example 1, except that the following coating liquid was used in place of the first adhesive layer coating liquid in Example 1. Composition of coating liquid for first adhesive layer: -Byron 270 (manufactured by Toyobo) 165 parts-Vinylite VAGH (manufactured by Union Carbide Co.) 135 parts-Cyclohexanone 560 parts-Isophorone 140 parts-Microsilica 2.5 parts-Xylylene diisocyanate 75 parts

In the above, Byron 200 has a molecular weight of 1
7,000, Tg 67 ° C., hydroxyl value 6 KOHmg / g,
Acid value <2 KOHmg / g. Byron 270 has a molecular weight of 23,000, Tg of 67 ° C., and a hydroxyl value of 5 KOHmg /
g, acid value <2 KOHmg / g. Vinylite VAG
H is a vinyl chloride / vinyl acetate copolymer having a vinyl chloride content of 90%, a vinyl acetate content of 4%, and a vinyl alcohol content of 6%.
%, Hydroxyl group 2.3%, Tg 79 ° C., molecular weight 27,000
It is 0. Microsilica has an average particle size of 3 μm and is organically treated.

Comparative Example 1 A card of Comparative Example was obtained in the same manner as in Example 1 except that xylylene diisocyanate was not used in the coating liquid for the first adhesive layer in Example 1.

"Evaluation" Each of the cards obtained in the above Examples and Comparative Examples was evaluated as follows. (1) Evaluation was performed according to the items of short-term contamination condition and long-term contamination condition of JIS 6305. As a result, there was a difference between the example and the comparative example in the following items.・ Alcohol resistance (1 in 60% ethyl alcohol aqueous solution)
Immersion for a minute) Although there was no change in Examples 1 to 3, in Comparative Example 1, the surface was fogged. Artificial sweat resistance (immersed in alkaline solution "1% disodium carbonate aqueous solution", acidic solution "5% acetic acid aqueous solution" prepared for 24 hours according to ISO 105-E04 for 24 hours) Although Comparative Examples 1 to 3 do not change In No. 1, the surface was fogged. (2) When the water resistance (60 ° C. for 5 minutes) was evaluated, Examples 1 to 3 did not change, but Comparative Example 1 had clouding on the surface.

[0037]

INDUSTRIAL APPLICABILITY According to the present invention as described above, an intermediate transfer capable of imparting an image excellent in various durability such as chemical resistance, water resistance, scratch resistance and light resistance to the surface of a card substrate. A recording medium and a card having excellent durability thereof can be provided.

[Brief description of drawings]

FIG. 1 is a diagram schematically showing a cross section of an intermediate transfer recording medium of the present invention.

FIG. 2 is a diagram schematically showing a method for forming an image on an intermediate transfer recording medium of the present invention.

FIG. 3 is a diagram schematically showing a cross section of an intermediate transfer recording medium on which an image is formed.

FIG. 4 is a diagram illustrating a method of manufacturing a card according to the present invention.

[Explanation of symbols]

1: Base material sheet 2: Release layer (release layer) 3: First adhesive layer 4: Image 5: Second adhesive layer 6: Third adhesive layer A: Base material sheet B: Ink layer C: Laser light D: Magnetic recording layer

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Noriyuki Sougai             450 Aoto-cho, Midori-ku, Yokohama-shi, Kanagawa The             Inktech Co., Ltd. F-term (reference) 2C005 HA10 KA37 LA03 LA14 LA30                 2H097 CA17 GB04 LA20                 2H111 AA05 AA08 AA10 AA26 AA35                       AA40 AB07 CA03 CA04 CA25                       CA31 CA41 CA44

Claims (7)

[Claims] 1. An adhesive layer (image receiving layer) is formed on a base sheet via a release layer or a release layer, and the adhesive layer comprises a polyester resin and a vinyl chloride-vinyl acetate copolymer. Consisting of a mixture and a polyisocyanate, the above 2
An intermediate transfer recording medium, wherein at least one of the seed resins has a group that reacts with an isocyanate group. 2. The intermediate transfer recording medium according to claim 1, wherein the adhesive layer contains an extender pigment such as silica. 3. An image is formed on the adhesive layer of the intermediate transfer recording medium according to claim 1, an adhesive concealing layer is provided on at least a part of the image surface, and the concealing layer is made to face a card substrate. The method for producing a card is characterized in that the base material sheet of the intermediate transfer medium is peeled off by thermocompression bonding. 4. The method for manufacturing a card according to claim 3, wherein the image is formed by transferring ink from an ink sheet. 5. In forming the image, an ink sheet having an ink layer on a base material sheet is laid on an adhesive layer of an intermediate transfer recording medium, and thermal energy for image information is applied from the back surface of the ink sheet to generate the thermal energy. The method for producing a card according to claim 3, wherein the ink layer in the portion affected by is transferred to the adhesive layer to form an image on the adhesive layer. 6. The card manufacturing method according to claim 5, wherein when the image information is information of a color image, the ink layer is an ink layer of at least one color component of color components forming the color image. Method. 7. The thermal energy is obtained by scanning a laser beam corresponding to image information.
The method for manufacturing a card according to.