JPH06206381A - Thermal transfer body and recording method using the same - Google Patents

Abstract

PURPOSE:To provide a thermal transfer body and thermal transfer recording method which are free from dispersion in density even in a low-density part of not only ordinary paper or wood free paper or a postcard but also any of recorded bodies and is capable of forming a favorable, excellent mono color or full color image. CONSTITUTION:In a thermal transfer body, a cushioning layer 2 having transferrable cushioning properties, a resin layer 3 having transferrable and dyeing properties and a heat transfer dye layer 4 are formed in order on one surface of a base sheet 1. The cushioning layer 2 and the dyeing resin layer 3 my be allowed to laminate from the very begining as the deformation. In relation to this, (1) an adhesive layer is provided on the cushioning layer and/or (2) a peeling layer is provided between a recorded body and the cushioning layer (in case of lamination of the cushioning layer/dyeing resin layer, between the recorded body and dyeing resin layer) are also effective.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sublimation type thermal transfer member and a recording method using the same, and more specifically, a transferable dye-staining resin layer, a transferable cushion layer and a heat transferable dye layer. The present invention relates to a thermal transfer member formed on one surface of a base material sheet with a certain regularity, and a method of using the thermal transfer member to obtain a transferred image on a recording medium, preferably by a velocity difference recording method.

[0002]

2. Description of the Related Art Generally, a sublimation type thermal transfer recording system has been attracting attention as a system suitable for a full-color image. However, a heat transferable dye is formed from plain paper, high-quality paper or the like paper, and a thermosetting resin. A satisfactory transfer image cannot be formed on a recording medium such as a metal plate, a glass plate, a porcelain and a ceramics. For this reason, conventionally, it is necessary to use a dedicated designated paper as a recording medium, and there is a problem of lacking versatility. In consideration of these points, a thermal transfer member has been proposed in which a dye-receiving layer and a sublimable ink layer are provided on a base sheet at positions where they do not overlap (formed sequentially) (Japanese Patent Laid-Open No. 62-297184). Issue). However, the image obtained by the thermal transfer material is good for most recording materials, but when printed on plain paper or postcards, uneven adhesion with the sublimable ink layer due to fiber density variation of the base sheet There is a tendency for density variations in the low-density portion to occur due to.

[0003]

SUMMARY OF THE INVENTION The object of the present invention is to eliminate the above-mentioned defects, and not only plain paper, high-quality paper, postcards, etc. The present invention provides a thermal transfer member and a thermal transfer recording method capable of forming a good and excellent mono-color or full-color image without any variation.

[0004]

The first aspect of the present invention is a thermal transfer member, which comprises a cushion layer having a transferable cushioning property and a resin having a transferable dye-dyeing property on one surface of a substrate sheet. It is characterized in that a layer and a heat transferable dye layer are formed in a frame sequential manner.

A second aspect of the present invention is another type of thermal transfer member, which is a laminate of a cushion layer having a resin layer / cushion layer having transferable dye-dyeability on one surface of a substrate sheet, and It is characterized in that the heat transferable dye layer is formed in a frame sequential manner.

A third aspect of the present invention is a recording method using the first or second thermal transfer member, which comprises forming a cushion layer on a base sheet and a resin layer having a dye-staining property on a recording medium. ,
Alternatively, after transferring the dye-dyeable resin layer / cushion layer laminate on the substrate sheet to the recording medium, the dye-dyeable resin layer and the heat transferable dye layer on the substrate sheet are combined. Overlapping and thermal transfer are performed by making the relative speed of the substrate sheet 1 / n times (n> 1) with respect to the recording medium.

The present invention will be described in more detail below with reference to the accompanying drawings. FIG. 1 shows a sectional view of a preferred example of the first thermal transfer member of the present invention, in which a heat transferable dye layer 4 is formed on a base material sheet 1 and adjacent to the heat transferable dye layer 4. The cushion layer 2 and the dyeable resin layer (transferable dye dyeable resin layer) 3 are provided. This example is an example of a black or monocolor thermal transfer member. FIG. 2 shows a sectional view of a preferred example of a multicolor thermal transfer member. In this example, three primary colors of yellow (Y), magenta (M) and cyan (C) or black (Bk) is added to the four primary colors. The cushion layer 2 and the dyeable resin layer 3 may be formed for each unit as a unit of color (FIG. 2a), and the dyeable resin layer 3 may include the heat transferable dye layer 4 (Y) of each hue. ), 4 (M), 4 (C) or 4 (Y), 4
(M), 4 (C), and 4 (Bk) may be provided adjacent to each other (FIG. 2B).

During recording, since the cushion layer 2 of the thermal transfer member is first transferred to the recording medium, even if there are variations in the surface fiber density of the recording medium, the variation is due to the transfer of the cushion layer 2. After that, the transferred image formed thereafter is obtained as a good image.

FIG. 3 shows another preferable example of the first thermal transfer member of the present invention, in which the adhesive layer 5 is formed on the upper surface of the cushion layer 2 in the example of FIG. 2 (a). That is, the adhesive layer 5 is located on the surface side opposite to the base sheet 1, and the cushion layer 2 is eventually sandwiched between the base sheet 1 and the adhesive layer 5. The cushion layer 2 can also be transferred to the recording medium. Further, in this case, since the cushion layer 2 does not need to be softened at the time of transfer, the range of selection of the material forming the cushion layer 2 is significantly expanded. Although the above example is a modification of FIG. 2A, it can be similarly applied to the examples of FIGS. 1 and 2B.

FIG. 4 shows another preferable example of the first thermal transfer member of the present invention. In the example of FIG. 2A, a release layer 6 is interposed between the cushion layer 2 and the base sheet 1. It is a thing. By interposing the release layer 6 in this way, the release from the cushion layer 2 base sheet 1 and the transfer to the recording medium are further facilitated. Although this example is a modification of FIG. 2A, it can be similarly applied to the examples of FIGS. 1, 2B and 3. Therefore, an adhesive layer can be provided on the upper surface of the cushion layer, and a release layer can be provided on the lower surface of the cushion layer (between the cushion layer and the base sheet).

FIG. 5 shows a sectional view of a preferred example of the second thermal transfer member of the present invention, in which the base sheet 1
It is exactly the same as FIG. 1 except that the cushion layer 2 and the dyeable resin layer 3 are formed on top of each other. In the lamination of the cushion layer 2 / dyeing resin layer 3 here, the cushion layer 2 is located on the front surface side. 6A and 6B except that the cushion layer 2 and the dyeable resin layer 3 are laminated from the beginning, and FIGS.
8 is substantially the same as FIG.

The base sheet 1 may be any one that has a conventionally known degree of heat resistance and strength, and may be, for example, 0.
Paper having a thickness of about 5 μm to 50 μm, preferably about 2 μm to 10 μm, various processed papers, polyester films, polystyrene films, polypropylene films, polysulfone films, aramid films, and those having a heat resistant slipping layer on the back surface are preferable.

The binder resin for the heat transferable dye layer 4 may be any conventionally known binder resin, and examples thereof include cellulosic resins such as ethyl cellulose, methyl cellulose, hydroxyethyl cellulose, ethyl hydroxy cellulose, cellulose acetate: polyvinyl. Examples thereof include vinyl resins such as alcohol, polyvinyl acetate, polyvinyl butyral, polyvinyl acetal, polyvinyl pyrrolidone, and polyacrylamide. Among them, polyvinyl butyral is preferable from the viewpoint of heat resistance and heat transferability of dyes.

The heat transferable dye is a dye that sublimes or vaporizes at 60 ° C. or higher, and any dye mainly used for thermal transfer or printing such as disperse dyes or oil-soluble dyes may be used. For example, CI Desperse Yellow 1 , 3,8,9,16,4
1,54,60,77,116 etc. CI Desper red 1,4,6,11,15,17,55,59,6
CI Desperse Blue 3,1 such as 0,73,83
4, 19, 26, 56, 60, 64, 72, 99, 10
8 etc., CI Solvent Yellow 77, 116 etc.,
Examples include CI Solvent Red 23, 25 and 27, and CI Solvent Blue 36, 83 and 105. In the present invention, one of these dyes can be used, but a mixture of several dyes can also be used.

As an ink solvent for dissolving or dispersing the heat transferable dye and the binder resin, a conventional ink solvent can be freely selected. Specifically, alcoholic solvents such as methanol, ethanol, isopropyl alcohol, butanol, Isobutanol and the like, ketone-based methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone and the like, aromatic-based toluene, xylene and the like, halogen-based dichloromethane, trichloroethane and the like, dioxane, tetrahydrofuran and the like, formamide, dimethylformamide, dimethylsulfoxide or The above mixture may be mentioned.

The dye concentration of the heat transferable dye layer is 5 to
It is about 80% by weight, preferably about 10 to 60% by weight.
The heat transferable dye layer has a thickness of 0.1 μm to 30 μm,
The range is preferably 0.5 μm to 2.0 μm. In particular, when the thermal transfer material of the present invention is used in the speed difference mode method (1 / n-fold mode method), as the heat transfer dye layer, a dye layer used in the conventionally known speed difference mode method can be used. JP-A-2-215596 and JP-A-2-253.
The use of dye layers described in publications such as 88 is preferred.

The heat transferable dye layer 4 used in the present invention is
Basically, it is formed of the above-mentioned material, but it may contain various conventionally known additives as required. When the desired image is a monocolor, the heat transferable dye layer 4 may be formed by selecting any one color from the dyes or may be formed from a mixed color, and the desired image may be a multicolor image. When the image is a color image, for example, appropriate cyan, magenta, and yellow (and black if necessary) are selected, and the image shown in FIG.
(A) (b), yellow, magenta and cyan (and black if necessary) heat transferable dyes as shown in FIGS. 3, 4, 6 (a), (b), 7 and 8. Form layer 4.

As mentioned above, the cushion layer 2 is a dyeing resin layer which is uniform and uniform in the dye transferred by heat from the heat transferable dye layer 4 regardless of the material and structure of the recording medium. 3 is a layer for improving the adhesiveness between the heat transferable dye layer 4 and the dyeable resin layer 3, so that a known elastic material can be used.
Butadiene-based latex and vinyl acetate-based latex are preferred. Particularly preferable cushion layer 2 is a resin having a 100% modulus of 100 kg / cm ² or less defined by JIS-K-6301, for example, SB.
R, MBR, polyurethane resin, polybutadiene resin,
A layer mainly containing one or more resins such as polyacrylic acid ester resin, epoxy resin, polyamide resin, rosin-modified phenol resin, terpene phenol resin, ethylene-vinyl acetate copolymer resin, aqueous polymer solution, for example , Polyvinyl alcohol, casein, starch and other hydrophilic polymers, and hollow particles having a vinyl chloride-acrylonitrile copolymer or other thermoplastic substance as a capsule wall in an aqueous emulsion solution, and propane, n-butane, isobutane inside the particles. A substance containing an expansive expander such as, for example, Matsumoto Microsphere-F30 (manufactured by Matsumoto Yushi Co., Ltd.) wild heat-expandable plastic substance hollow particles is mixed to obtain 1 heat-expandable plastic substance hollow particles.
Layer containing about 10 to 10 g / m ² , preferably about ² to 6 g / m ² , thermoplastic resin such as polyester, vinyl chloride resin, vinyl acetate resin, styrene resin and acrylic resin, trimet acid plasticizer, epoxy plastic Agent, a polyester-based plasticizer, a phthalic acid-based plasticizer, an adipic acid-based plasticizer, a layer containing 2 to 30 parts by weight of a phosphoric acid-based plasticizer per 100 parts by weight of the above resin, a foaming agent in the thermoplastic resin, for example, Celmic K (manufactured by Sanyo Kasei Co., Ltd.) is mixed and foamed by means such as heating so that the micropores having a pore size of 1 to 100 μm, preferably 1 to 50 μm, have a porosity of 20% or more. And the like.

The cushion layer 2 can be formed by a known coating method or printing method by dissolving or dispersing the above-mentioned appropriate resin in a solvent. The thickness of the cushion layer 2 is not particularly limited, but is 1 to 100.
About μm is appropriate.

As shown in FIG. 3 or FIG. 7, the adhesive layer 5 which may be provided on the surface of the cushion layer 2 is formed by using a conventionally known pressure-sensitive or heat-sensitive adhesive or the like, preferably, for example.
It may be formed to a thickness of 1 to 50 μm. If a pressure-sensitive adhesive is used, the cushion layer 2 can be transferred to the recording medium only by pressure, and if a heat-sensitive adhesive is used, the cushion layer 2 can be transferred to the recording medium by a thermal head or the like. .

Between the base sheet 1 and the cushion layer 2 (FIG. 4) or between the base sheet 1 and the dyeable resin layer 3 (FIG. 8).
The release layer 6 which may be formed in the above-mentioned manner is formed of a conventionally well-known resin having excellent releasability, for example, an acrylic resin, a silicone resin, a fluororesin, or the like, preferably in the same manner as in the cushion layer 2 described above. It may be formed as a layer having a thickness of about 0.1 to 50 μm.

Although not shown, the cushion layer 2,
The adhesive layer 5 and the release layer 6 may be formed as separate layers, or may be formed as a single layer such as a cushion layer / adhesive layer or a cushion layer / release layer by mixing respective raw materials. . Further, also in the dyeable resin layer 3, similarly to the cushion layer 2, an adhesive layer and a release layer may be provided respectively, and the form of providing them may be respectively formed as separate layers. The raw materials may be mixed to form a single layer such as a dyeable resin layer / adhesive layer or a dyeable resin layer / release layer. In recording, the cushion layer 2 and the dyeable resin layer 3 may be wholly transferred or partially transferred to the recording medium, and are not particularly limited.
In the case of partial transfer, in order to improve the film breakage of the dyeable resin layer at the time of transfer, those layers are formed of a resin having a relatively low molecular weight, or an inorganic filler or the like is added in the layer. It is advantageous to add.

The dyeable resin layer 3 is a layer that receives a dye that is transferred by heat from the heat transferable dye layer 4 of the thermal transfer member, and is, for example, a polyolefin resin such as polypropylene, polyvinyl chloride, or polyvinylidene chloride. Halogenated polymers such as, polyvinyl acetate, vinyl polymers such as polyacrylic ester, polyester resins such as polyethylene terephthalate and polybutylene terephthalate, polystyrene resins, polystyrene resins, polyamide resins, olefins such as ethylene and propylene, and others The resin material capable of being dyed by the dye in the heat transferable dye layer 4 such as a copolymer resin with a vinyl monomer, an ionomer, a cellulose resin such as cellulose diacetate, a polycarbonate, or the like. In particular, the dyeing resin layer suitable for recording in the speed difference mode method is formed of the above-mentioned materials, but if necessary, various conventionally known various agents such as a curing agent, a release agent and a lubricant can be used. It is desirable to contain additives.

The recording medium used for forming an image using the thermal transfer material of the present invention may be any material to which the cushion layer 2 (or the adhesive layer 5) can be adhered, for example, ordinary paper, Postcards, plastic sheets, wood, metal, glass, porcelain, pottery, various resin moldings and the like are not limited at all, and a desired monocolor or full-color image can be formed on any article.

FIG. 9 is a diagram for schematically explaining a method of performing thermal transfer recording using the thermal transfer member shown in FIG. The thermal recording medium of the present invention is superposed on the surface of an arbitrary recording medium 7 (for example, a postcard), and pressure and / or pressure is applied from the back side thereof by a suitable heating means 8 or heating means such as a heating roll, hot stamp or thermal head. Alternatively, by heating, the adhesive layer 5 and the cushion layer 2 are first transferred to the recording medium 7 in the same manner, and then either the recording medium 7 or the thermal transfer medium is moved to move on the cushion layer 2. The dyeable resin layer 3 is transferred from the thermal transfer member (see FIG. 9).
(A)). Next, either the thermal transfer material or the recording material 7 is moved, the yellow heat transferable dye layer 4 (Y) of the thermal transfer material is overlaid on the transferred dyeable resin layer 3, and the thermal head 9 The yellow image 10 is formed in the dyeable resin layer 3 by thermal transfer. Similarly, a desired multicolor color image is formed by sequentially transferring and transferring magenta, cyan, and black. This example uses the thermal transfer member of the example of FIG. 3, but the same applies to other examples. For example, FIG. 10 shows a thermal transfer member in which a dye supply layer 12, a dye transfer contributing layer 13, and a low dyeing resin layer 14 are laminated as an ink layer having multi-functionality, and the laminated body as a total is a heat transferable dye layer. Therefore, the image formation can be performed by the same method as described in FIG.

In the recording method described with reference to FIGS. 9 and 10, recording is performed by making the relative speed of the heat transferable dye layer 4 relative to the dyeing resin layer 3 1 / n times (n> 1). Doing so is advantageous in that the running cost can be reduced.

[0027]

EXAMPLES Next, the present invention will be described more specifically with reference to examples. Both% and parts are based on weight.

Example 1 (Formation of heat transferable dye layer) Organic binder: Polyvinyl butyral BX-1 (manufactured by Sekisui Chemical Co., Ltd.) 10 parts Heat transferable dye: MS-CyanVP (Mitsui Toatsu Co., Ltd.) 10 parts Solvent: Toluene 95 parts Methyl ethyl ketone 95 parts A composition of the formula is dispersed in a ball mill for 24 hours,
A heat transferable paint layer of 10 cm × 10 cm having a dry adhesion amount of 1.0 g / m ² was formed on a back surface of an aromatic polyamide film having a thickness of about 1 μm and a heat-resistant layer of silicone resin based on about 6 μm by a wire bar. The areas were formed in the order of blank 1, blank 2, and cyan.

(Cushion Layer Formulation) SBR: Porex 750 (manufactured by Mitsui Toatsu Co., Ltd.) 20 parts Paraffin wax: Hydrin D388 (manufactured by Chukyo Yushi Co., Ltd.) 10 parts Water After dispersing a composition consisting of 75 parts, This was applied to the above-mentioned blank 1 so that the amount of adhesion when dried was about 10 g / m ² to form a cushion layer.

Next, a liquid consisting of the following dyeing resin layer formulation was applied to the above blank 2 so that the dry adhesion amount was about 10 g / m ² to form a dyeing resin layer. (Dyeable resin layer formulation) Polyacrylic resin BR-90 (manufactured by Mitsubishi Rayon Co., Ltd.) 10 parts Release agent: Amino-modified silicone SF8417 (manufactured by Trade Dow Corning Co., Ltd.) 0.5 part Solvent: Toluene 45 parts Methyl ethyl ketone 45 parts

Further, a 10% solution of ethylene-vinyl acetate copolymer-based adhesive AD-37P66 (manufactured by Toyo Morton Co., Ltd.) in methyl ethyl ketone was applied to the surface of the cushion layer at a rate of dry adhesion of 2 g / m ² and dried. To form an adhesive layer, and a thermal transfer member of the type shown in FIG.
4 (c), the dye layers other than the heat transfer cyan dye layer were omitted).

The adhesive layer of the thermal transfer member having the heat transferable dye layer, the dyeable resin layer, the cushion layer and the adhesive layer is A4.
No. of high-quality paper, heat the entire surface with a heat roll of 100 ℃, transfer the cushion layer to the high-quality paper together with the idea of the spine, and then transfer the heat of the thermal transfer material to the surface of the cushion layer transferred to this high-quality paper. Cyan dye layers were made to face each other and overlapped, and thermal transfer was performed from the back surface of the thermal transfer member under the following conditions with a thermal head to obtain a cyan image. This image was clear and had high image quality with a uniform low density portion. Further, when a thermal transfer member was prepared in the same manner except that no adhesive layer was provided and an image was formed on the high-quality paper, the adhesiveness to the high-quality paper of the image was somewhat weak, and the temperature was almost the same as above. A good image was obtained. For comparison, the image obtained in the same manner as above without transferring the cushion layer and the dyeing resin layer was hardly transferred, and was a very thin and dry image with no practicality. It was For other comparison, the image obtained in the same manner as above without transferring the cushion layer has clear and high-density image, but white spots caused by density variations of the recording medium are generated in the low-density portion. The occurrence confirmed the non-uniformity of the concentration. Further, in the above method, the same result was obtained even when the thermal transfer of the cushion layer and the dyeable resin layer was performed using a thermal head instead of the heat roll at 100 ° C. (Recording conditions) Applied power: 432 mw / dot Thermal head: Resolution 6 dots / mm Maximum applied energy: 3.02 mj / dot

Example 2 (Formation of heat transferable dye layer) Organic binder: Polyvinyl butyral BX-1 (manufactured by Sekisui Chemical Co., Ltd.) 10 parts Heat transferable dye: As shown in Table 1 below Solvent: After dispersing a composition of a formulation consisting of 95 parts of toluene and 95 parts of methyl ethyl ketone in a ball mill for 24 hours,
An aromatic polyamide film having a thickness of about 1 μm and having a heat resistance of about 6 μm formed on a back surface thereof with a heat transferable dye layer having a dry adhesion amount of 10 cm × 10 cm as shown in Table 1 by a wire bar. And blank 1, blank 2, yellow, magenta, and cyan in this order.

[Table 1]

(Cushion Layer Formulation) SBR: Porelax 750 (manufactured by Mitsui Toatsu Co., Ltd.) 20 parts Paraffin wax: Hydrin D388 (manufactured by Chukyo Yushi Co., Ltd.) 10 parts Water After dispersing a composition consisting of 75 parts, This was applied to the above-mentioned blank 1 so that the adhesion amount when dried was about 10 g / m ² , to form a cushion layer.

Next, a liquid consisting of the following dyeable resin layer formulation was applied to the above blank 2 so that the dry adhesion amount was about 10 g / m ² . (Formation of dyeable resin layer) Polyacrylic resin BR-90 (manufactured by Mitsubishi Rayon Co., Ltd.) 10 parts Release agent: amino-modified silicone SF8417 (manufactured by Toray Dow Corning Co., Ltd.) 0.5 part Solvent: 45 parts toluene Methyl ethyl ketone 45 parts

Further, ethylene is added to the surface of the cushion layer.
A 10% solution of vinyl acetate copolymer adhesive AD-37P66 (manufactured by Toyo Morton Co., Ltd.) in methyl ethyl ketone was applied at a rate of dry adhesion of about 2 g / m ² and dried to form an adhesive layer. A thermal transfer member of the type shown in was prepared.

The adhesive layer of the thermal transfer member having the above-mentioned three-color heat transferable dye layer, dyeing resin layer, cushion layer and adhesive layer is overlaid on A4 size high-quality paper, and the entire surface is heated and transferred by a heat roll at 100 ° C. Then, the heat transfer yellow dye layer of the thermal transfer member is placed on the surface of the cushion layer transferred on the high quality paper so as to face it, and the thermal transfer is performed with the thermal head under the following conditions from the back of the thermal transfer member. A yellow image was obtained. Subsequently, in the same manner, magenta and cyan images were aligned and formed to form a full-color image.
This full-color image was clear and had high image quality with a uniform low density portion. For another comparison, the image obtained in the same manner as above without transferring the cushion layer has a clear and high-density image quality, but white spots due to the density variation of the recording medium in the low-density portion are produced. It was confirmed that the nonuniformity of the concentration was caused by the occurrence of. In the above method, the same result was obtained even when the thermal transfer of the cushion layer and the dyeable resin layer was performed using a thermal head instead of the heat roll at 100 ° C. (Recording conditions) Applied power: 432 mw / dot Thermal head: Resolution 6 dots / mm Maximum applied energy: 3.02 mj / dot

Example 3 A thermal transfer member of the present invention of the type shown in FIG. 3 was obtained in the same manner as in Example 2 except that the following materials were used. Cushion layer SBR; L-1432 (Asahi Kasei Corp.)
Adhesive layer Polyester heat-sensitive adhesive; Byron 20SS (manufactured by Toyobo Co., Ltd.) Dyeable resin layer Vinyl chloride-vinyl acetate copolymer; V
YHH (manufactured by Union Carbide Co.) heat transferable yellow dye layer; Foron Brilia
nt Yellow S-6GL (manufactured by Sand Corp.) heat transferable magenta dye layer; EX-90 (Mitsui Toatsu Co., Ltd.)
Made) Heat transfer cyan dye layer; Ceres Blue GN
(Manufactured by Bayer) The heat transferable dye layer of three colors, the cushion layer (with an adhesive layer) and the dyeable resin layer are overlaid on a postcard manufactured by a public authority, and the cushion layer is heated by a heat roll at 100 ° C. and then the dyeable resin. After thermal transfer of the entire surface of the layer, a full color image was formed in the same manner as in Example 2. In this full-color image, the density of the low density part was uniform, and clear and high density was obtained.

Example 4 In Example 2, except that the polyester-modified silicone resin was first applied to the area of the blank 1 of the polyethylene terephthalate film so that the thickness after drying was about 1 μm to form a release layer. A thermal transfer member of the present invention of the type shown in FIG. 4 was obtained in the same manner as in 2. This thermal transfer sheet had excellent performance as in Example 2.

Example 5 A wire bar was used on an aromatic polyamide film having a thickness of about 6 μm and having a heat-resistant layer of silicone resin type having a thickness of about 1 μm on the back surface thereof, and an intermediate adhesive layer having a thickness of about 1.0 μm, and then about 10 μm. A dye supply layer having a thickness of 4.5 μm, and a dye transfer contributing layer (thickness of about 1.0 μm) and a low dyeing resin layer (about 0.
A heat transferable dye layer, each having a thickness of 7 μm), was laminated and coated, and heat-cured at 60 ° C. for 60 hours to prepare a thermal transfer member of the type shown in FIG.

(Intermediate Adhesive Layer) Polyvinyl butyral resin BX-1 (manufactured by Sekisui Chemical Co., Ltd.) 10 parts Diisocyanate Coronate L (manufactured by Nippon Polyurethane Co., Ltd.) 5 parts Solvent Toluene 95 parts Methyl ethyl ketone 95 parts

[Each Dye Supply Layer] Polyvinyl butyral resin BX-1 7 parts Polyethylene oxide Alcox R400 (manufactured by Meisei Chemical Co., Ltd.) 3 parts Diisocyanate Coronate L (manufactured by Nippon Polyurethane Co., Ltd.) 3 parts Sublimation dye yellow Foron Brilliant Yellow S 6GL 30 parts Magenta; HM-1041 (manufactured by Mitsui Toatsu Dye Co., Ltd.) 30 parts Cyan; HSO-144 (manufactured by Mitsui Toatsu Dye Co., Ltd.) 30 parts Solvent Ethyl alcohol 170 parts Butyl alcohol 20 Department

[Each Dye Transfer Contribution Layer] Polyvinyl butyral resin (BX-1) 10 parts Diisocyanate (Coronate L) 3 parts Sublimation dye yellow; Foron Brilliant Yellow S 6GL 20 parts Magenta; HM-1041 (Mitsui Toatsu dye) 20 parts Cyan; HSO-144 (manufactured by Mitsui Toatsu Dye Co., Ltd.) 20 parts Solvent Toluene 45 parts Methyl ethyl ketone 45 parts Dioxane 100 parts (each low dyeing resin layer) Styrene-maleic acid copolymer Suprapearl AP30 (manufactured by BASF) 5 parts Silane coupling agent hydrolysis product 12 parts Sublimation dye yellow; Foron Brilliant Yellow S 6GL 5 parts Magenta; HM-1041 (manufactured by Mitsui Toatsu Dyes Co., Ltd.) 5 parts Cyan; HSO-144 (manufactured by Mitsui Toatsu Dye Co., Ltd.) 5 parts Solvent Tetrahydrafuran 20 parts (Synthesis of hydrolysis product of silane coupling agent) Dimethy Silane 15 g, methyltrimethoxysilane 9
g was dissolved in a mixed solution of 12 g of toluene and 12 g of methyl ethyl ketone, 13 ml of 3% sulfuric acid was added, and hydrolysis was carried out for 3 hours. This liquid is referred to as liquid C. Blank the above dye layer 1
(20 cm x 20 cm), blank 2 (20 cm x 20 c)
m), yellow, magenta, cyan (each 20 cm x 4 c
It was formed in the order of m).

Subsequently, a polyester-modified silicone resin was first applied to the regions of the blanks 1 and 2 so as to have a dry thickness of about 1 μm and dried to form a release layer. Further, (cushion layer formulation) Ultra White 90 (manufactured by Engelhard) 3 parts SBR; Porrex 750 (manufactured by Mitsui Toatsu Co., Ltd.) 20 parts Paraffin wax; Hydrin D388 (manufactured by Chukyo Yushi Co., Ltd.) 6 parts Water After dispersing 75 parts of the liquid, a cushion layer was applied to the above blank 1 at a dry adhesion amount of about 10 g / m ² , and an adhesive layer (ethylene-
Vinyl acetate copolymer type heat-sensitive adhesive: AD-37P66)
Was coated and formed so that the amount of adhesion was about 2 g / m ² when dried. (Dyeable resin layer composition) Polyester resin Byron 200 (manufactured by Toyobo Co., Ltd.) 10 parts Diisocyanate Coronate L (manufactured by Nippon Polyurethane Co., Ltd.) 5 parts Amino-modified silicone SF8417 (manufactured by Toray Dow Corning Co., Ltd.) 5 parts Epoxy-modified silicone SF8411 (manufactured by Toray Dow Corning Co., Ltd. 0.5 part Solvent Toluene 40 parts Methyl ethyl ketone 40 parts) A dry adhesion amount of about 10 g /
m ² , adhesive layer (polyester heat-sensitive adhesive Byron 20
SS) was applied and formed so that the dry adhesion amount was about 2 g / m ² , to prepare a thermal transfer member.

The cushion layer and the dyeing resin layer of the thermal transfer body having the dye layer of three colors, the cushion layer, and the dyeing resin layer were overlaid on a high-quality paper of A4 size, and the entire surface was heat-transferred by a heat roll at 100 ° C. The yellow dye layer of the thermal transfer member was superposed on the surface of the image receiving layer so as to face it, and thermal transfer was performed from the back surface of the thermal transfer member under the following conditions with a thermal head to obtain a yellow image. Next, in the same manner, magenta and cyan images were formed in alignment with each other to form a full-color image. This full-color image was clear with a low density portion being uniform and high quality with high density. Further, for comparison, the image obtained in the same manner as above without transferring the cushion layer has clear and high-density image quality, but white spots due to the density variation of the recording medium are present in the low-density portion. It was confirmed that the nonuniformity of the concentration was caused by the occurrence of. (Recording conditions) Thermal head resolution 12 dots / mm Applied energy 0.64 mj / dot Applied power 0.16 w / dot Feeding speed (5 times speed) during recording Image receiving sheet (recording medium) 8.5 mm / sec The ink sheet (thermal transfer member) was set to 1.7 mm / sec, and recording was performed by the speed difference mode method.

Examples 6 to 10 Thermal transfer members were prepared in the same manner as in Examples 1 to 5, except that the cushion layer was laminated on the dyeable resin layer. As for this thing, the same favorable result as Examples 1-5 was obtained, respectively.

[0047]

According to the first, second, seventh, eighth, ninth and tenth aspects of the present invention, a cushion layer having a cushioning property that can be transferred to one surface of a base sheet, and a resin having a dyeing dyeing property that can be transferred. Layers and heat transferable dye layers are formed in a frame-sequential manner, so that it is possible to record on plain paper and postcards that do not have dyeing property by the resin layer having dye dyeing property. The density variation in the low density portion due to the unevenness of adhesion with the heat transferable dye layer due to the fiber density variation of the recording medium is improved. According to the invention of claim 3, a full-color image can be obtained by forming the heat transferable dye layers of yellow, magenta, cyan and (black) in the surface sequential manner. According to the invention of claim 4, since the cushion layer is prevented from being transferred to the transfer target by having the adhesive layer at least as the upper layer of the cushion layer, it is possible to prevent density unevenness in a partially low density portion due to transfer unevenness. According to the inventions of claims 5 and 6,
By having the release layer between the cushion layer and the lower layer of the base material sheet, it is possible to prevent uneven transfer of the cushion layer to the transfer target, and it is possible to prevent uneven density in a partially low density portion due to uneven transfer. According to the invention of claim 11, after transferring the cushion layer and the resin layer having the dye-dyeing property to the recording medium and the ink ribbon, the resin layer having the dye-dyeing property and the heat transfer dye layer are transferred. The running cost can be reduced in the recording method in which the recording is performed by superimposing with each other.

[Brief description of drawings]

FIG. 1 is a schematic view of an example of a thermal transfer member according to the present invention.

2A and 2B are schematic views of two examples of the thermal transfer member according to the present invention.

FIG. 3 is a schematic view of an example of a thermal transfer member according to the present invention.

FIG. 4 is a schematic view of an example of a thermal transfer member according to the present invention.

FIG. 5 is a schematic view of an example of a thermal transfer member according to the present invention.

6A and 6B are schematic views of two examples of the thermal transfer member according to the present invention.

FIG. 7 is a schematic view of an example of a thermal transfer member according to the present invention.

FIG. 8 is a schematic view of an example of a thermal transfer member according to the present invention.

9A and 9B are views for explaining a method of recording by using the thermal transfer member of the present invention.

FIG. 10 is a schematic view of an example of still another thermal transfer member according to the present invention.

[Explanation of symbols]

 1 Base Material Sheet 2 Cushion Layer 3 Dyeing Resin Layer 4 Heat Transferable Dye Layer 5 Adhesive Layer 6 Release Layer 7 Recorded Object 8 Heating Means 9 Thermal Head 10 Transfer Image 11 Intermediate Adhesive Layer 12 Dye Supply Layer 13 Dye Transfer Contribution Layer 14 Low dyeing resin layer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroki Kuboyama 1-3-6 Nakamagome, Ota-ku, Tokyo Stock company Ricoh Co., Ltd. (72) Inventor Yutaka Ariga 1-3-6 Nakamagome, Ota-ku, Tokyo Shares Company Ricoh

Claims (11)

[Claims] 1. A cushion layer having a transferable cushioning property, a resin layer having a transferable dye-dyeing property, and a heat transferable dye layer are sequentially formed on one surface of a base sheet. A thermal transfer material characterized by the above. 2. A laminate of a transferable dye-dyeing resin layer / a cushioning cushioning layer and a heat transferable dye layer are sequentially formed on one surface of a base sheet. A thermal transfer body characterized by. 3. The thermal transfer member according to claim 1, wherein the heat-transferable dye layer is formed of yellow, magenta, cyan, or each layer in which black is further added in a frame-sequential manner. 4. The thermal transfer member according to claim 1, wherein an adhesive layer is provided on the upper surface of the cushion layer. 5. The thermal transfer member according to claim 1, wherein a release layer is provided between the base sheet and the cushion layer. 6. The thermal transfer member according to claim 2, wherein a release layer is provided between the base sheet and the resin layer. 7. The cushion layer is JIS K6301
100% modulus specified in 100 kg / cm ²
A layer containing the following resin as a main component:
The thermal transfer material described. 8. The thermal transfer member according to claim 1, wherein the cushion layer is a layer containing hollow particles in a resin. 9. The thermal transfer member according to claim 1, wherein the cushion layer is a layer containing a plasticizer in a resin. 10. The thermal transfer member according to claim 1, wherein the cushion layer has fine pores in the resin. 11. A thermal transfer material according to claim 1 or 2 and a recording medium, after the cushion layer on the substrate sheet or the resin layer having dye-dyeability is thermally transferred to the recording medium, or the substrate sheet. After the above-mentioned dye-dyeable resin layer / cushion layer laminate is thermally transferred to a recording medium, the dye-dyeable resin layer and the heat transferable dye layer on the substrate sheet are overlapped to record. Relative speed of base sheet to body is 1 / n times (n> 1)
The recording method is characterized by carrying out thermal transfer.