JPH091951A - Heat mode image receiving material - Google Patents

Abstract

PURPOSE: To obtain an image receiving sheet capable of transferring an image to a permanent support capable of being produced in a high yield by using the support having a specific value or less of elastic modulus in a photothermal conversion type heat mode image receiving material made of at least a support and an image receiving layer. CONSTITUTION: In a photothermal conversion type heat mode image receiving material having a support and an image receiving layer, a support having an elastic modulus of 100kg/mm<2> or less is used. In this case, the support is formed of a material selected from among 1, 2-polybutadiene, polyurethane, soft vinyl chloride, and non-oriented polypropylene, and the film thickness of the support is 5μm or less. The photothermal conversion type heat mode image receiving material provides the support capable of being released on the surface having no image receiving layer of the support via an intermediate layer in conveying and exposing steps, and so uses as to transfer image to the permanent support after the releasable support is released in the step of transferring the transfer image to the permanent support.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photothermal conversion type heat mode image receiving material capable of converting light into heat and thermally transferring the heat. In particular, the present invention relates to an image receiving material capable of forming a high definition and / or full color image by digital dry processing.

According to the present invention, an image formed by heat mode recording on an image receiving layer is retransferred to a desired permanent support, if necessary, to obtain a high resolution and high quality image on various permanent supports. Retransferable heat mode laser melting thermal transfer image receiving material that can be used as a retransferable heat mode laser melting thermal transfer image receiving material, and is used for making color proofs for printing color proofs that require particularly fine images. The present invention also relates to an image receiving material suitable as a material.

[0003]

2. Description of the Related Art Conventionally, as a thermal transfer recording material, a thermal transfer ink sheet having a heat-fusible colorant layer or a heat-sublimable colorant layer is overlaid with an image-receiving sheet having an ink-receptive surface, and heated by pressing with a thermal head or an energizing head. By doing
There is a method of forming an image by transferring the heat-fusible colorant layer or the heat-sublimable colorant in the heated portion to the ink receiving surface. Such thermal transfer recording has advantages such as low noise, maintenance-free, low cost, easy colorization, and digital recording, and is used in various fields such as various printers, recorders, and facsimiles.

Particularly in recent years, there has been an increasing demand for digital image output in fields requiring high-definition images such as medical treatment and printing, and thermal transfer recording has been drawing attention as a means for meeting this demand.

On the other hand, as a thermal transfer recording method capable of forming a higher resolution image, there is a heat mode laser thermal transfer recording method in which the energy of a laser beam modulated based on an image signal is converted into heat to perform thermal transfer image recording. 4
No. 9-15437, No. 49-17743, No. 57-87399, No. 59-143659. Recording with a laser beam is effective for high-resolution recording because the laser exposure diameter can be optically reduced to about several μm.

Whether in the above-mentioned thermal transfer recording or laser beam thermal recording, it is required to form an image on a permanent support such as high-quality paper, coated paper or art paper. In this case, the permanent support has a undulation of ten and several μm and a surface roughness of several μm, which makes it difficult to directly transfer and form an image,
An intermediate transfer medium is used to first form an image on the intermediate transfer medium and then retransfer to the permanent support.
When transferring an image to a permanent support, there are cases where only the image is transferred and cases where the entire image receiving layer of the intermediate transfer medium is transferred.
When the waviness on the surface of the permanent support is as large as ten and several μm, it is necessary for the intermediate transfer medium to sufficiently follow this waviness for transfer.

In JP-A-61-189535, the image-receiving layer of an image-receiving sheet is composed of a first layer having a Vicat softening point of 80 ° C. or lower and thicker than the irregularities on the surface of a permanent support, and a second layer provided on the upper layer. By doing so, it is described that the image receiving layer follows the irregularities on the surface of the permanent support and has good transferability.

In these materials, in order to improve the adhesion between the image receiving sheet and the permanent support, a layer having a cushioning property having a thickness exceeding the irregularities on the surface of the permanent support is formed on the support, and it is necessary. According to the above, since the upper layer is further formed, the production process is complicated and stable production is difficult, and the yield is low.

[0009]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an image-receiving sheet capable of transferring an image to a permanent support, which has an easy production process and enables high-yield production.

[0010]

DISCLOSURE OF THE INVENTION As a result of research on solving the above-mentioned problems, the present inventors have found that by defining the elastic modulus of a support, an image receiving material for heat mode laser melting thermal transfer having good transferability can be obtained. I found that I could get it.

That is, the present invention provides: In a photothermal conversion heat mode image receiving material comprising at least a support and an image receiving layer, the elastic modulus of the support is 100 k.
1. A light-heat conversion type heat mode image receiving material characterized by being g / mm ² or less; The support is 1-2 polybutadiene, polyurethane,
2. The photothermal conversion type heat mode image receiving material according to the above 1, which is formed of a material selected from soft vinyl chloride, unstretched polypropylene, low density polyester, and unstretched nylon. 3. A photothermal conversion heat mode image receiving material comprising at least a support and an image receiving layer, wherein the support has a film thickness of 25 µm or less. Conveyance / photo heat conversion type heat mode image receiving material
In the exposure step, a peelable support is provided on the surface of the support having no image receiving layer via an intermediate layer, and the peelable support is peeled off in the step of transferring the transfer image to the permanent support. 4. Photothermal conversion type heat mode image receiving material characterized by transferring an image to a permanent support, 5. The heat-to-heat conversion type heat mode image-receiving material as described in 4 above, wherein the peelable support is re-bondable with the support of the image-receiving material to be reproducible. The image receiving material according to any one of 1 to 4 above,
The image receiving layer of the image receiving material having at least an image receiving layer provided on the support and the thermal transfer layer of the heat mode laser melting thermal transfer recording material are brought into close contact with each other, and imagewise laser exposure is carried out to peel off the image, thereby forming an image on the image receiving layer. And if necessary,
An image receiving material used in a heat mode laser melting thermal transfer system in which an image receiving layer of an image formed image receiving sheet and a permanent support are placed in close contact with each other, and an image is retransferred onto the permanent support by heating and / or pressing. A heat mode image-receiving material characterized by:

[0012]

The present invention will be described in more detail below.
Photothermal conversion type heat mode image receiving material, recording method and recording material are referred to as "heat mode image receiving material, recording method, recording material".
Etc. or more “image receiving material, recording method, recording material”
And so on.

The photothermal conversion type heat mode recording method in the present invention is the same as the representative process described in Japanese Patent Application No. 05-122084.

Specifically, it shows the pressure reducer shown in FIG. 1 and the periphery of the pressure reducer. Here, the case where the decompressor has a drum shape is illustrated, but the basic configuration is the same for a flat plate and a concave plate (inner surface scanning type drum). Further, in the figure, the recording material and the image receiving material are loaded in a roll shape, but even if they are loaded in a sheet shape, there is no great difference in the transportability of the material to the decompressor.

The above object of the present invention is achieved by the following constitutions. (Image Receiving Material) (Support for Image Receiving Material) Support As a support, a plastic film made of a flexible material having an elastic modulus of 100 kg / mm ² or less, or a film thickness 25
It is preferable to use a plastic film having a thickness of μm or less.

Among plastic films having an elastic modulus of 100 g / mm ² or less, 1-2 polybutadiene, polyurethane, soft vinyl chloride, vinyl chloride graft EVA,
A film sheet made of a material such as unstretched polypropylene, low density polyethylene, or unstretched nylon is particularly preferable in terms of smoothness and transportability during coating.

Further, even for a support having an elastic modulus of more than 100 kg / mm ² , transfer to a permanent support becomes easy when the film thickness is 25 μm or less. In this case, a biaxially stretched film of polyester, particularly polyethylene terephthalate or polyethylene naphtholate, biaxially oriented polypropylene, cellulose triacetate, cellophane, polystyrene,
It is possible to use a film having an elastic modulus of 100 g / mm ² or more, such as polycarbonate, biaxially stretched nylon, or hard vinyl chloride.

When a flexible base or thin film base is used as the support, it may impair the transportability. In this case, good transportability can be obtained by providing a peelable support (hereinafter referred to as a peeling support) on the surface of the support having no image receiving layer. In this case, in the step of transferring the transfer image to the permanent support, the peeling support is peeled off and then transferred to the permanent support.

The release support comprises a support and an intermediate layer.

The support is not particularly limited as long as it has good dimensional stability and excellent transportability, and specifically, the film described in JP-A-63-193886, page 2, lower left column, lines 12-18. Alternatively, sheets can be used. The thickness of the support is 50 to 300 μm, preferably 75 to 150
μm is preferable in terms of transportability. The back surface of the support (the surface opposite to the surface provided with the adhesive layer) has blocking resistance,
A backing layer may be provided to impart functions such as running stability and antistatic property.

The intermediate layer must be capable of holding the image receiving material and peeling the image receiving material until the step of transferring the transferred image to the permanent support.

The intermediate layer comprises a binder and various additives which are added as necessary.

As the intermediate layer binder, EVA, EE
Materials having weak adhesiveness such as A, EAA, polyethylene, polypropylene, and polybutadiene are preferable. Further, when a release layer made of a silicone type release agent or a fluorine type release agent is formed on the surface of the image receiving material on which the image receiving layer is not provided, it is possible to use a material having high adhesiveness as the intermediate layer. .

As the method for forming the intermediate layer, a material obtained by dissolving the intermediate layer material in a solvent or dispersed in a latex on a release support is applied by a blade coater, a roll coater, a bar coater, a curtain coater, a gravure coater or the like. A hot-melt extrusion lamination method, a film laminating method for forming an intermediate layer, and the like can be applied.

When a peelable weakly tacky material is used as the intermediate layer, another image receiving material is used after peeling the release support from the support in order to retransfer an image to the permanent support on the image receiving layer. It can be pasted and reproduced for use. In this case, it is possible by laminating the weakly tacky intermediate layer on the release support and the support of the image receiving material.

An example of data regarding the elastic modulus of the material usable as the support in the present invention is shown below. Elastic modulus data: kg / mm ² (measurement result by Japanese Patent Application No. 4-228779 and others, by vibron) EVA (VA 14%) Evaflex # 150 2 Evaflex # 560 10 Polybutadiene RB830 10 RB840 10 Urethane Crown Pond U-06 20 CA-239 160 CA-271 160 CA-9047 100 CA-128 100 CA-118 230 CA-139 180 EAA Hi-Tech S-3125 20 Styrene Butadiene JSR0617 30 Acrylic Diinal BR-102 130 Polystyrene Styron 666 330 Styrene-Acrylonitrile Tylyl 767 350 Polyethylene terephthalate 450 Polypropylene sheet 80 Clayton 1710X 70 Clayton 1726 50 Sorp Ren T475 30 Eval E25 350 S-8532 80 S-8533 60 Vinyl Chloride Graft EVA EVA Smedica N-3132E 40

Young's modulus data extracted from literature PET Lumirror 400 T-100 500 (MD), 530 (TD) W-400 500 (MD), 490 (TD) Biaxially stretched PP Trefan BO 200 (MD), 360 (TD) Non-stretched pp Trefan NO 70 Low-density PE 20 High-density PE-Hard polyvinyl chloride 140 Soft polyvinyl chloride 20 Cellophane 150-320 Cellulose triacetate 300 Polystyrene 120 Polycarbonate 110 Biaxially stretched nylon 170 Unstretched nylon 60 Polyamide KAPTON 300

(Composition of Image Receiving Layer) Image Receiving Layer It is preferable that the surface of the image receiving material that contacts the recording material at the time of image formation has good smoothness or is appropriately roughened. More specifically, when the surface of the heat-meltable ink layer of the recording material is roughened by a matte material or the like, it is desirable that the surface of the image-receiving material in contact with the heat-meltable ink layer has good smoothness. When the heat-meltable ink layer is not roughened, it is desirable that the surface of the image receiving material which is in contact with the heat-meltable ink layer is roughened by a matte material. or,
Both the contact surfaces of the heat-meltable ink layer and the image receiving material may be roughened.

The image-receiving layer is composed of a binder and various additives and mat materials which are added as needed. In some cases, it is formed only with a binder.

As the binder of the image-receiving layer, polystyrene, acrylic resin, polyvinyl acetate, polyvinyl chloride, vinyl chloride vinyl acetate copolymer, vinyl chloride graft EVA, EVA graft vinyl chloride, polyvinyl acetal, polyvinyl butyral, polyvinyl formal, styrene / Acrylic copolymer, vinyl chloride / acrylic copolymer, vinyl chloride / ethylene / vinyl acetate copolymer, vinyl chloride / ethylene copolymer, vinyl acetate / ethylene /
Examples thereof include acrylic copolymers, ethylene / vinyl acetate copolymers, polyesters, polycarbonates, ethyl celluloses, acrylonitrile / styrene copolymers, rosin ester resins, petroleum-based resins, and the like.

Of these, vinyl chloride-grafted EVA, EVA-grafted vinyl chloride, polyvinyl acetal, polyvinyl butyral, polyvinyl formal, and polycarbonate are preferable in the case of retransferring only an ink image.

Further, it is more preferable to use a resin having Tg of 65 ° C. or more as a binder for the image receiving layer because the storage stability such as blocking is improved.

When a resin having a Tg of 65 ° C. or higher is used as the image receiving layer binder, the thickness of the image receiving layer is usually 0.1 to 5 μm,
It is preferably 0.5 to 2.5 μm. When the film thickness exceeds 5 μm, when the image is retransferred to the permanent support and only the ink image is retransferred, a void is generated in the transferred image, and 0.
When the thickness is less than 1 μm, the cohesive force of the image receiving layer is insufficient and it is not possible to retransfer only the ink image. There is no particular limitation when transferring the layers as a whole, but the above-mentioned film thickness is preferable in view of the texture such as gloss of an image.

When the image formed on the image receiving layer is retransferred to another recording medium by further heating and / or pressing, the polarity of the image receiving layer is relatively small (S).
Resins (having a small P value) are particularly preferable. For example, polyethylene, polypropylene, ethylene-vinyl chloride copolymer,
Examples include ethylene-acrylic copolymers, vinyl chloride resins, and various modified olefins.

In order to improve the retransfer property of the image receiving layer, a dispersant having releasability may be added. The dispersant having releasability can be selected from various nonionic dispersants.

In particular, various ether type nonionic surfactants and nonionic surfactants of the type called Pluronic type nonionic surfactants are effectively used. Among them, a nonionic surfactant of a type obtained by adding ethylene oxide to alkylphenol, higher alcohol, polypropylene glycol or its derivative is preferably used.

The dispersant having these releasing agents may be used alone or in a mixture of a plurality of kinds.

These dispersants are preferably 0.1 to 20% by weight, based on the resin component contained in the image receiving layer coating solution.
Particularly preferably, it is contained in an amount of 1 to 15% by weight so that the dispersibility of the water-based emulsion resin, the coatability of the image-receiving layer, and the coloring material for transferring the image formed on the image-receiving layer to a permanent support, particularly paper. The transferability of the layer to the permanent support and the releasability of the image receiving material (sheet) from the permanent support can be effectively improved.

A matting material may be added in order to obtain an image receiving layer having good slipperiness. However, if the addition amount of the matting material is excessively increased, a gap is generated between the recording material and the image receiving material, which deteriorates the transferability. The amount of the matting material added depends on the particle size, the image receiving layer binder and the image receiving layer film thickness, for example, when forming an image receiving layer having a thickness of 1 μm, the matting material having a thickness of 0.8 to 1.5 μm has a content of 15 to 350 mg / m ² . 5 to 200 mg ^{/ m} 2 in the mat member .5～3.5Myuemu, it may be added in a range of 100 mg / ^{m 2} or less at 5μm mat member.

The thickness of the image receiving layer is usually 0.5 to 10 μm, but this is not the case when the deformable layer is used as the image receiving layer. (Recording Material or Ink Sheet: Example of Heat Mode Laser Melting Thermal Transfer Recording Material) The recording material basically has a structure in which a heat-meltable ink layer is laminated on a support,
It also has the function of converting the imagewise light into heat.
In this case, the ink layer may have a light-heat conversion function, or a light-heat conversion layer may be introduced. If necessary, an intermediate layer (release layer, barrier layer, cushion layer, etc.) may be provided between the support and the ink layer. In the present invention, it is preferable to provide a cushion layer.

The heat-fusible ink layer means an ink layer which is melted or softened at the time of heating and is transferable for each layer containing a coloring material and a binder, and does not need to be transferred in a completely melted state. .

Examples of the coloring material include pigments such as inorganic pigments and organic pigments, and dyes.

Examples of the inorganic pigments include titanium dioxide, carbon black, zinc oxide, pursin blue, cadmium sulfide, iron oxide and chromates of lead, zinc, barium and calcium.

The organic pigments include azo-based, thioindigo-based, anthraquinone-based, anthanthrone-based, triphendioxazine-based pigments, vat dye pigments, phthalocyanine pigments (eg copper phthalocyanine) and their derivatives,
Examples thereof include quinacridone pigment. Examples of the organic dyes include acid dyes, direct dyes, disperse dyes, oil-soluble dyes, metal-containing oil-soluble dyes, and sublimable dyes.

When the formed image is used as a color proof, as a color material equivalent to that used in the printing ink, for example, Rionol Blue FG-7330, Rionol Yellow No. 1206, No. 1406G,
Pigments such as Rionol Red 6BFG-4219X (both manufactured by Toyo Ink Co., Ltd.) can be used.

The content of the coloring material in the ink layer is not particularly limited, but is usually in the range of 5 to 70% by weight, preferably 10 to 60% by weight.

Examples of the binder for the ink layer include a heat-melting substance, a heat-softening substance and a thermoplastic resin. The heat-fusible substance is generally a solid or semi-solid substance having a melting point in the range of 40 to 150 ° C. measured using Yanagimoto MJP-2. Concretely, vegetable waxes such as carnauba wax and wood wax; animal waxes such as beeswax and shellac wax; petroleum waxes such as paraffin wax, microcrystal wax, polyethylene wax, ester wax, acid wax; and montan wax, ozokerite, ceresin. Other examples of the waxes include mineral waxes, and in addition to these waxes, higher fatty acids such as palmitic acid, stearic acid, and behenic acid; palmityl alcohol, stearyl alcohol, behenyl alcohol, marganyl alcohol, etc. Higher alcohols; higher fatty acid esters such as cetyl palmitate, myricyl palmitate, cetyl stearate, myricyl stearate; amides such as acetamide, propionamide, palmitamide, stearamide, amide wax; Teariruamin, behenyl amine, higher amines such as palmityl amine.

As the thermoplastic resin, an ethylene copolymer, a polyamide resin, a polyester resin, a polyurethane resin, a polyolefin resin, an acrylic resin, a styrene-acryl copolymer, a styrene resin, a styrene-malein resin is used. Acid copolymer, vinyl chloride resin, cellulose resin, rosin resin, polyvinyl alcohol resin, polyvinyl acetal resin, ionomer resin,
Resins such as petroleum-based resins; elastomers such as natural rubber, styrene-butadiene rubber, isoprene rubber, chloroprene rubber, and diene-based copolymers; rosin derivatives such as ester gum, rosin maleic acid resin, rosin phenol resin, and hydrogenated rosin; Phenolic resin, terpene resin,
Examples thereof include polymer compounds such as cyclopentadiene resin and aromatic hydrocarbon resins.

The thermal transfer layer having a desired thermal softening point or thermal melting point can be formed by appropriately selecting the above-mentioned heat-melting substance and thermoplastic substance.

The function of converting the imagewise irradiated light into heat is, for example, by including a photothermal conversion material in the ink layer, or by providing a photothermal conversion layer containing the photothermal conversion material adjacent to the ink layer. Can be realized by

When a photothermal conversion material is contained in the ink layer,
Any conventionally known photothermal conversion material can be used. In the preferred embodiment of the present invention, heat is generated by irradiation with a semiconductor laser beam, and therefore, when forming a color image, 70
A near-infrared light absorber having an absorption maximum in the wavelength band of 0 to 3000 nm and having little or no absorption in the visible region is preferable. When forming a monochrome image, carbon black or the like having absorption in the visible to near infrared region is preferable.

Examples of the near-infrared absorber include organic compounds such as cyanine-based, polymethine-based, azurenium-based, squalium-based, thiopyrylium-based, naphthoquinone-based, anthraquinone-based dyes, phthalocyanine-based, azo-based, thioamide-based organic metal complexes and the like. Are preferably used, and specifically, JP-A Nos. 63-139191, 64-33547, 1-160683, 1-280750, 1-2.
No. 93342, No. 2-2074, No. 3-26593.
No. 3-30991, No. 3-34891, No. 3-
No. 36093, No. 3-36094, No. 3-36095
No. 3, No. 42281, No. 3-97589, No. 3-
No. 103476 and the like.

When the photothermal conversion layer containing the photothermal conversion material is provided as a layer different from the ink layer, the above-mentioned photothermal conversion material can be used as it is.

As the binder in the photothermal conversion layer,
Resins with high glass transition temperature and high thermal conductivity, such as polymethylmethacrylate, polycarbonate, polystyrene,
Ethylene cellulose, nitrocellulose, polyvinyl alcohol, gelatin, methyl cellulose, polyvinylpyrrolidone, polyparabanic acid, polyvinyl chloride, polyamide, polyimide, polyetherimide, polysulfone,
A general heat resistant resin such as polyether sulfone or aramid can be used.

A water-soluble polymer can also be used as the binder in the photothermal conversion layer. The water-soluble polymer is preferable because it has good releasability from the ink layer, good heat resistance when exposed to light, and little so-called scattering even when it is heated excessively. When a water-soluble polymer is used, it is desirable that the photothermal conversion substance be modified to be water-soluble (by introduction of a sulfo group or the like) or dispersed in an aqueous system. Among the water-soluble resins, gelatin is preferable because it hardly causes aggregation of a water-soluble infrared absorbing dye, and stable coating of a light-to-heat conversion layer, storage of a recording medium, color turbidity due to aggregation of the infrared absorbing dye, and decrease in sensitivity.
Further, since increasing the peelability between the photothermal conversion layer and the ink layer leads to an improvement in sensitivity, it is effective to incorporate various releasing agents into the photothermal conversion layer. Examples of the release agent include silicone-based release agents (polyoxyalkylene-modified silicone oil, alcohol-modified silicone oil, etc.), fluorine-based surfactants (perfluorophosphate ester-based surfactants), and various other surfactants. Is effective.

The thickness of the photothermal conversion layer is preferably 0.1 to 3 μm, and the content of the photothermal conversion material in the photothermal conversion layer is
Usually, the absorbance at the wavelength of the light source used for image recording is 0.3
It can be determined to be 3.0.

In addition to the above, the light-heat conversion layer can also be formed as a vapor deposition film of carbon black, aluminum or the like. The photothermal conversion material may be the color material itself of the ink layer, and is not limited to the above, and various substances can be used.

The cushion layer of the recording material is provided for the purpose of increasing close contact with the image receiving material, but the support itself may be provided with cushioning properties.

To impart cushioning properties, a material having a low elastic modulus or a material having rubber elasticity may be used. Specifically, natural rubber, acrylate rubber, butyl rubber, nitrile rubber, butadiene rubber, isoprene rubber, styrene-butadiene rubber, chloroprene rubber, urethane rubber, silicone rubber, acrylic rubber, fluorine rubber, neoprene rubber, chlorosulfonated polyethylene,
Styrene elastomers such as epichlorohydrin, EPDM (ethylene propylene diene rubber), styrene isoprene styrene, styrene ethene butene styrene, and elastomers such as urethane elastomers, polyethylene, polypropylene, polybutadiene, polybutene, polyurethane, acetate, cellulose acetate, amide resin, poly Tetrafluoroethylene, polyester,
Impact-resistant acrylic resin, styrene-butadiene copolymer, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene copolymer, vinyl chloride-vinyl acetate copolymer, polyvinyl acetate, vinyl chloride resin with plasticizer, vinylidene chloride Among resins, polyvinyl chloride, polyvinylidene chloride and the like, resins having a small elastic modulus can be mentioned.

The thickness of the cushion layer varies depending on various factors such as the type of resin or elastomer used, the suction force at the time of adhering the recording material to the image receiving material, the particle size of the matting material, the amount of matting material used, and is therefore generally determined. No, but usually 2-3
The range is 0 μm.

As the method for forming the cushion layer, a material obtained by dissolving the above materials in a solvent or dispersing them in a latex form is applied by a blade coater, a roll coater, a bar coater, a curtain coater, a gravure coater or the like, or an extrusion lamination by hot melt. And a method of laminating a cushion layer film can be applied.

Any support may be used as long as it has good dimensional stability and withstands heat during image formation. Specifically, it is described in JP-A-63-193886, page 2, lower left column, lines 12-18. Films or sheets can be used.
Further, when the laser light is irradiated from the recording material side to form an image, it is desirable that the support of the recording material is transparent. If an image is formed by irradiating a laser beam from the image receiving material side, the support of the recording material need not be transparent. The thickness of the support is not particularly limited, but usually 2 to
The thickness is 300 μm, preferably 5 to 200 μm. When the sheet is conveyed, it is preferably 50 μm to 200 μm.

[0063]

EXAMPLES The present invention will be described in detail below with reference to examples, but embodiments of the present invention are not limited thereto. still,
"Parts" means "parts by weight" unless otherwise specified. Example 1 Preparation of Image Receiving Material A 180 μm thick soft PVC sheet (DOP) was used as a support.
30% added) was coated with an image receiving layer coating solution having the following composition using a wire bar and dried to form an image receiving layer having a thickness of 0.5 μm.

Image-Receiving Layer Coating Solution Polyvinyl acetal resin solution (Sekisui Chemical Co., Ltd., KS-1, active ingredient 7%) 50 parts PMMA fine particles (average particle size 1.1 μm, Soken Chemical Co., Ltd., MR-2G) 1 part Pure water 49 parts

Preparation of Recording Material A 100 μm thick polyethylene terephthalate (PET) substrate was coated with a cushion layer coating solution having the following composition using a blade coater and dried to form a cushion layer having a thickness of 6 μm. .

Cushion layer coating liquid SEBS (Shell Chemical Co., Ltd., Kraton G1657) 20 parts Toluene 80 parts Next, a photothermal conversion layer coating liquid having the following composition was applied and dried using a wire bar to give a film thickness of 0.5 μm. The photothermal conversion layer of was formed.

Photothermal conversion layer coating liquid Polyvinyl alcohol (EG-30, manufactured by Nippon Synthetic Chemical Industry Co., Ltd.) 7 parts Carbon black 3 parts Pure water 90 parts Next, an ink layer coating liquid having the following composition is applied using a wire bar. After drying, an ink layer having a film thickness of 0.5 μm was formed.

Ink layer coating liquid Styrene acrylic resin (manufactured by Sanyo Kasei Co., Ltd., Hymer SBM-73F) 5 parts Ethylene-vinyl acetate copolymer (manufactured by Mitsui DuPont Polychemical Co., EV-40 Y) 1 part Cyan pigment dispersion Material (manufactured by Mikuni Dye Co., Ltd.) 4 parts Methyl ethyl ketone 90 parts

Preparation of Image After wrapping around the drum surface of the exposure apparatus having the structure of FIG. 1 so that the back surface of the prepared image receiving material is in contact, it is wound so that the image receiving layer and the ink layer of the recording material are in contact, and vacuum contact is performed. The image was transferred onto the image receiving layer by laser exposure from the back surface of the recording material.

Retransfer of Image The image formed on the image receiving layer by laser exposure is overlaid on art paper (Tokubishi Art, manufactured by Mitsubishi Paper Mills), and a linear pressure of 2 kg is applied.
/ Cm, a roll temperature of 150 ° C. and a roll peripheral speed of 20 mm / sec.

Evaluation When the image transferred onto the art paper was evaluated, the image receiving layer was not transferred, only the ink was transferred, and a void-free image was obtained.

FIG. 1 is a schematic explanatory view of an exposure apparatus preferably used for carrying out the present invention. 1 is a pressure roll, 2 is a pressure reducing hole, 3 is a heat mode recording material (3-1 is yellow, 3-1 is yellow,
3-2 is magenta, 3-3 is cyan, 3-4 is black recording material), 4 is heat mode image receiving material, 5 is heat mode recording material replenishing means, 6 is heat mode image receiving material replenishing means, 7 Is a decompressor holding portion, 8 is an optical writing means, and 9 is a housing. Here, the case where the pressure reducer is in the form of a drum is illustrated, but the basic configuration is the same in the case of a flat plate. When the recording material and the image receiving material are wound around the decompressor and brought into close contact with each other, first, the image receiving material is depressurized while the decompression hole valve is closed, and wound and fixed. Next, the recording material is wound, and at this time, the pressure reducing holes are sequentially opened. Thereby, it is easy to shorten the decompression time and obtain a close contact state. It is more effective to open the pressure reducing valve while pressing it with the squeeze roller.

Example 2 Preparation of Image Receiving Material An image receiving material was prepared in the same manner as in Example 1 except that the following materials were used as the support. The recording material was prepared and evaluated in the same manner as in Example 1. The evaluation results are summarized in Table 1.

Support Melvull sheet (1,2-polybutadiene sheet) Smedica sheet (Vinyl chloride graft EVA sheet) Polypropylene sheet Polyethylene sheet Non-stretched nylon film

Comparative Example 1 An image receiving material was prepared in the same manner as in Example 1 except that the following materials were used as the support. The recording material was prepared and evaluated in the same manner as in Example 1. The evaluation results are summarized in Table 1.

Support PET film (Toray Industries, Inc., Lumirror, 100 μm) Hard polyvinyl chloride sheet (180 μm)

[0077]

[Table 1]

Example 3 As a support, 25 μm PET was coated with an image receiving layer coating solution having the following composition using a wire bar and dried to give a film thickness of 1.5 μm.
Was formed. Image-receiving layer coating liquid Acrylic resin (Mitsubishi Rayon Co., Ltd., Dianal BR113) 9.5 parts Silicone resin particles (average particle size 2.0 μm, Toshiba Silicone Co., Tospar 120) 0.5 part Methyl ethyl ketone 90 parts Recording material Was formed, an image was formed, and retransfer was performed in the same manner as in Example 1.

Evaluation When the image transferred on the art paper was evaluated, the image was transferred together with the image receiving layer, and an image without void was obtained.

Example 4 Preparation of Image Receiving Material 75 μm PET was used as a peeling support, and ethylene vinyl acetate copolymer (VA Mitsui DuPont Polychemical Co., VA 14%, Evaflex P1407C) was used as an intermediate layer in a thickness of 30 μm by a hot melt extrusion lamination method. It was formed to a film thickness, and PET having a thickness of 12.5 μm was attached to the EVA surface. Then, the same image-receiving layer coating solution as in Example 3 was applied onto 12.5 μm PET using a wire bar.
After drying, an image receiving layer having a thickness of 1.5 μm was formed.

Preparation of Recording Material A recording material was prepared in the same manner as in Example 1.

Preparation of Image The prepared image receiving material and recording material were conveyed and laser-exposed using the exposure apparatus having the construction shown in FIG.

Retransfer of image The peeling support was peeled from the interface between the intermediate layer of the image receiving material on which an image was formed and the support, and the support was laminated on art paper (manufactured by Mitsubishi Paper Mills, Tokubishi Art) and the linear pressure was 2 kg / cm. , Roll temperature 150
The transfer was carried out under pressure and at a roll peripheral speed of 20 mm / sec.

Evaluation The image-receiving material formed a good transferred image without causing conveyance failure. When the image transferred on art paper was evaluated, the image was transferred together with the image receiving layer, and an image without voids was obtained.

Example 5 Preparation of Image Receiving Material After image formation in Example 4, 12.5 μm PET was superposed on the intermediate layer of the release support which was peeled off, and the linear pressure was 2 kg / cm.
The lamination was performed at a roll temperature of 30 ° C. and a roll peripheral speed of 200 mm / sec. Next, the same image-receiving layer coating solution as in Example 3 was applied onto 12.5 μm PET using a wire bar and dried to form an image-receiving layer having a thickness of 1.5 μm.

Preparation of Recording Material A recording material was prepared in the same manner as in Example 1.

Image Formation The image-receiving material thus produced was subjected to image transfer and retransfer to art paper in the same manner as in Example 4. As a result, the same transportability, image transferability and peeling of the peeling support as in Example 4 were obtained. Property and retransfer property were obtained, and the release support could be reused.

[0088]

According to the present invention, only ink is transferred to obtain a high quality image.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view of an exposure apparatus preferably used for carrying out the present invention.

[Explanation of symbols]

1 Pressure Roll 2 Decompression Hole 3 Heat Mode Recording Material (3-1 is Yellow, 3-2
Indicates magenta, 3-3 indicates cyan, and 3-4 indicates black recording material) 4 heat mode image receiving material 5 heat mode recording material replenishing means 6 heat mode image receiving material replenishing means 7 depressurizer holding portion 8 optical writing means 9 Case

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Claims (6)

[Claims] 1. A photothermal conversion heat mode image receiving material comprising at least a support and an image receiving layer, wherein the elastic modulus of the support is 100 kg / mm ² or less. 2. The support is formed of a material selected from 1-2 polybutadiene, polyurethane, soft vinyl chloride, unstretched polypropylene, low-density polyester, and unstretched nylon. The light-heat conversion type heat mode image-receiving material as described in 1. 3. A photothermal conversion heat mode image receiving material comprising at least a support and an image receiving layer, wherein the thickness of the support is 2
A light-heat conversion type heat mode image-receiving material having a thickness of 5 μm or less. 4. A photothermal conversion heat mode image receiving material, wherein a peelable support is provided on the surface of the support having no image receiving layer in the carrying / exposure step via an intermediate layer,
A photothermal conversion heat mode image receiving material, which comprises peeling a peelable support and then transferring the image to the permanent support in a step of transferring the transferred image to the permanent support. 5. The photothermal conversion heat mode image receiving material according to claim 4, wherein the peelable support is re-bondable with the support of the image receiving material to be reproducible. Mode image receiving material. 6. The image-receiving material according to any one of claims 1 to 4, wherein the image-receiving layer of the image-receiving material having at least an image-receiving layer provided on a support and the thermal transfer layer of the heat mode laser melting thermal transfer recording material are in close contact with each other. By imagewise exposing to laser and peeling off, an image is formed on the image-receiving layer, and if necessary, the image-receiving layer of the image-formed image-receiving sheet and the permanent support are closely adhered to each other, and heated and Alternatively, the heat mode image receiving material is an image receiving material used in a heat mode laser melting thermal transfer system in which an image is retransferred onto a permanent support by applying pressure.