JPH11235872A - Image forming material and method for forming image - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ablation type image forming material having an excellent high temperature preservability, and a method for forming an image using it. SOLUTION: The image forming material comprises an image forming material having an image forming layer on a support, and a material to be transferred having a layer to be transferred. In this case, a high density energy light is emitted from the support side to lower a bonding force of the forming layer of an exposure part to the support, and the material to be transferred and the image forming material are separated to form an image. In this material, the layer to be transferred contains a resin having a softening point of 80 to 150 deg.C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an ablation-type image forming material and an image forming method using the image forming material.

[0002]

2. Description of the Related Art Heretofore, a recording method in which light energy such as a laser beam is focused and irradiated onto a recording material to cause a part of the material to be melted, deformed, scattered, burned or evaporated (hereinafter abbreviated). It has been known. These are dry treatments that do not require treatment liquids such as chemicals, and have the advantage that high contrast can be obtained by melting, scattering, or evaporating only the light irradiation part. It is used for optical recording materials such as, for example, and transparent originals at the time of producing a printing plate.

For example, in Japanese Patent Application Laid-Open No. 9-226236,
An image forming material is described in which image formation by ablation can obtain a high-resolution good image with small energy.

[0004]

However, even if such an image forming material is used, if the image forming material is exposed to a high temperature of 50 ° C. or more for a long time, the image performance is deteriorated. Will occur.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an ablation type image forming material excellent in high-temperature preservability and an image forming method using the same.

[0006]

The above objects of the present invention have been attained by the following constitutions.

(1) An image forming body having an image forming layer on a support and a transfer receiving body having a transfer receiving layer are irradiated with high-density energy light from the support side, and the image forming layer in the exposed area is supported. In an image forming material for forming an image by lowering a bonding force with a body and separating an image forming body from a transferred body, a resin having a softening point of 80 ° C. to 150 ° C. in the transferred layer is contained. Characteristic image forming material.

(2) An image-forming body having an image-forming layer on a support and a transfer-receiving body having a transfer-receiving layer, which are irradiated with high-density energy light from the support side to support the image-forming layer in the exposed area. In an image forming material for forming an image by lowering the bonding force with the body and separating the image receiving body from the image receiving body, a resin having a softening point of 80 ° C. to 150 ° C. in the layer to be transferred, a tackifier and An image-forming material comprising:

(3) The image forming material as described in (2) above, wherein the content of the tackifier in the layer to be transferred is 50 parts by weight or less.

(4) At least 50 parts by weight of the layer to be transferred is a polyurethane resin.
The image forming material according to any one of the above.

(5) The image forming material as described in any one of (1) to (4) above, is irradiated with high-density energy light from the support side to reduce the bonding strength between the image forming layer in the exposed portion and the support. An image forming method, wherein an image is formed by separating a transfer object and an image forming body.

That is, the present inventors have found that a softening point of 80
It has been found that by incorporating a resin and / or a tackifier at a temperature of up to 150 ° C., degradation of image performance after high-temperature storage can be suppressed while maintaining high sensitivity and high quality image performance. This has led to the invention.

Hereinafter, the present invention will be described in detail.

<Image-forming Material> The image-forming material of the present invention has an image-forming layer, an image-protecting layer if necessary, an image-forming body comprising a support for holding the image-forming layer, and a layer to be transferred on the support. The basic structure is that which is bonded to the transfer object.

<Transfer object> The transfer object used in the present invention comprises:
Separating the image-receiving layer portion capable of receiving the image-forming layer portion, in which the bonding force between the support and the image-forming layer in the irradiated portion has been reduced by exposure to high-density energy light, and separating the image-receiving layer from the object to be transferred. Has a transferred layer to which the image forming layer of the irradiated portion can be transferred, and the transferred layer is mainly composed of a resin, and contains additives such as fine particles as needed.

As the base material for the support of the object to be transferred, paper, synthetic paper (for example, synthetic paper containing polypropylene as a main component), and a resin film used for the support of the image forming material are appropriately selected. Can be used.

The thickness of the substrate is usually 10 to 500 μm,
It is preferably from 20 to 200 μm, and is appropriately selected from such a range.

When the transfer object is placed adjacent to the image forming layer or the image protection layer, if the transfer layer is a resin having a self-supporting property, the transfer layer formation resin is dissolved in a solvent or melted by heat to form an image protection layer. It can be applied in the same manner as the layer to form a transfer-receiving body. When a film having no heat-sealing property is used, the transfer-receiving body provided with the transfer-receiving layer on the support can be bonded to the image forming material by subjecting the transfer-receiving body to a pressure treatment or an over-heat pressure treatment.

The peeling strength can be set by appropriately adjusting the pressure or the heat and pressure in bonding and adhering the image receiving layer and the image forming layer or the image protective layer. Lamination before exposure,
It does not matter which one is later.

In the present invention, the peel strength between the image-receiving layer and the image forming layer or the image protective layer is measured according to JISC 2107 (JI
1 in the 180-degree peeling method of SZ0237)
-50 gf / cm, preferably 1-25 gf / cm. As a result, the residual ratio of the image forming layer in the exposed area on the support after the transfer medium is peeled off is small, and a high-resolution image can be obtained.

As the layer to be transferred provided on the substrate, a resin used for a known adhesive such as a polyester resin, a urethane resin, a vinyl chloride resin, and an acrylic resin may be appropriately selected and used. It is preferable to include those having a softening point in the range of 80 ° C. to 150 ° C., and it is most preferable to use a polyurethane resin.

Examples of the tackifier include natural resins such as rosin and dammar, modified rosin, derivatives of rosin and modified rosin, polyterpene resins, modified terpenes, aliphatic hydrocarbon resins, cyclopentadiene resins, and aromatic resins. Petroleum resin, phenolic resin, alkylphenol-acetylene resin, styrene resin, xylene resin, coumaroindene resin, vinyltoluene-α-methylstyrene copolymer, but more compatible with the main binder Those having a molecular weight of about 200 to 1500 can also provide good tackiness.

In the present invention, a self-adhesive resin can also be used as a tackifier. In general, the resin having self-adhesive properties may be any of those having adhesiveness or tackiness at normal temperature itself, and those expressing adhesiveness or tackiness by applying heat or pressure, for example,
It can be formed by appropriately selecting a resin having a low softening point and a thermal solvent.

Examples of the resin having a low softening point include ethylene copolymers such as ethylene-vinyl acetate and ethylene-ethyl acrylate; polystyrene resins such as styrene-butadiene, styrene-isoprene and styrene-ethylene-butylene; polyester resins; Polyolefin resins such as polyethylene and polypropylene; polyvinyl ether resins; acrylic resins such as polybutyl methacrylate;
Ionomer resins; cellulose resins; epoxy resins; vinyl chloride resins such as vinyl chloride-vinyl acetate copolymers, and the like. Examples of the heat solvent include compounds that are solid at ordinary temperature and reversibly liquefy or soften when heated.Specifically, terpineol, menthol, acetamide, benzamide, coumarin, benzyl cinnamate,
Diphenyl ether, crown ether, camphor,
p-methylacetophenone, vanillin, dimethoxybenzaldehyde, p-benzylbiphenyl, stilbene,
Margaric acid, eicosanol, cetyl palmitate,
Monomolecular compounds such as stearic acid amide and behenylamine, beeswax, candelilla wax, paraffin wax, ester wax, montan wax, carnauba wax, amide wax, polyethylene wax, microcrystalline wax and other waxes, ester gum,
Rosin maleic acid resin, rosin derivative such as rosin phenol resin, phenol resin, ketone resin, epoxy resin, diallyl phthalate resin, terpene hydrocarbon resin, cyclopentadiene resin, polyolefin resin,
Polycaprolactone resin, polyethylene glycol,
Polymer compounds represented by polyolefin oxides such as polypropylene glycol and the like can be mentioned.

In the present invention, fine particles may be blended in the layer to be transferred, if necessary. As the fine particles, for example, silica, titanium oxide, aluminum oxide, zinc oxide,
Metal oxides such as magnesium oxide and aluminum borate, calcium carbonate, magnesium carbonate, barium sulfate, magnesium sulfate, aluminum hydroxide, magnesium hydroxide, metal salts such as boron nitride, kaolin, clay, talc, zinc white, lead white Organic fine particles such as inorganic fine particles such as ziglite, quartz, diatomaceous earth, perlite, bentonite, mica, synthetic mica, melamine resin particles, guanamine resin particles, styrene-acryl copolymer resin particles, silicone resin particles, and fluororesin particles Is mentioned.

When such fine particles are added, the content is usually preferably in the range of 0.1 to 50% by weight, particularly preferably 1 to 30% by weight. The average particle size of these fine particles is usually 0.01 to 20 μm, preferably 0.02 to 5 μm.
μm.

The layer to be transferred may contain additives such as an antistatic agent, a heat stabilizer, an antioxidant, an ultraviolet absorber, a light stabilizer and a fluorescent brightener.

In this case, the compounding amount is usually 30% by weight or less, preferably 20% by weight or less in the composition for forming a layer to be transferred.

The thickness of the transferred layer is about 0.1 to 40 μm,
The thickness is preferably 0.3 to 30 μm, and the thickness of the entire transfer receiving body including the support is about 10 to 200 μm, and preferably 20 to 100 μm.

The layer to be transferred can be provided by dispersing or dissolving the constituents in a solvent to prepare a coating liquid, applying the coating liquid to a predetermined site, and drying. Solvents used for coating include water, alcohols (eg, ethanol, propanol), cellosolves (eg, methyl cellosolve, ethyl cellosolve), aromatics (eg, toluene, xylene, chlorobenzene), ketones (eg, acetone, methyl ethyl ketone) ), Ester solvents (eg, ethyl acetate, butyl acetate, etc.), ethers (eg, tetrahydrofuran, dioxane), chlorine solvents (eg, chloroform, trichloroethylene), amide solvents (eg, dimethylformamide, N-methylpyrrolidone), dimethyl Sulfoxide and the like. Further, a layer can also be formed by melting a forming component with a hot melt and extruding.

<Image Forming Layer> The image forming layer of the present invention basically comprises a colorant and a binder resin for holding the colorant.

(Binder Resin) The binder resin can be used without any particular limitation as long as it can sufficiently retain the colorant.

Representative examples of such a binder resin include polyvinyl chloride resins such as polyurethane, polyester, and vinyl chloride copolymer. These resins are represented by -SO ₃ M, -OSO ₃ M,- COOM and -PO (OM
₁ ) ₂ [where M is a hydrogen atom or an alkali metal, M ₁
Represents a hydrogen atom, an alkali metal or an alkyl group. ] It is preferable to include a repeating unit having at least one type of polar group selected from the group consisting of, and by using a resin into which such a polar group is introduced, dispersibility is improved when a magnetic powder described later is used as a coloring agent. be able to. still,
The content ratio of this polar group in each resin is about 0.1 to 8.0 mol%, preferably 0.2 to 6.0 mol%. The binder resin may be used alone or in combination of two or more.

As the polar group-containing vinyl chloride, for example,
Vinyl chloride - a resin having a vinyl alcohol copolymer _{hydroxyl, Cl-CH 2 CH 2 SO} 3 M, Cl-CH 2 CH
_{2 OSO 3 M, Cl-CH} 2 CO 2 M, Cl-CH 2 P (=
O) It can be synthesized by an addition reaction with a compound having a polar group such as (OM ₁ ) ₂ and a chlorine atom.

One example is shown below.

--CH ₂ C (OH) H-+ Cl--CH ₂ CH
₂ SO ₃ Na → -CH ₂ C (OCH ₂ CH ₂ SO ₃ Na) H
-A vinyl chloride resin containing a polar group is prepared by charging a predetermined amount of a reactive monomer having an unsaturated bond into which a repeating unit containing a polar group is introduced into a reaction vessel such as an autoclave, and adding benzoyl peroxide, azobisisobutyronitrile, or the like. General radical polymerization initiators, redox polymerization initiators,
It can be obtained by polymerization using a cationic polymerization initiator or the like. Specific examples of the reactive monomer for introducing sulfonic acid or a salt thereof include vinyl sulfonic acid, allyl sulfonic acid, methacryl sulfonic acid, p- Examples include unsaturated hydrocarbon sulfonic acids such as styrene sulfonic acid and salts thereof. When a carboxylic acid or a salt thereof is introduced, for example, (meth) acrylic acid or maleic acid is used, and when a phosphoric acid or a salt thereof is introduced, (meth) acryl-2-phosphate may be used.

Further, in order to improve the thermal stability of the binder resin, it is preferable to introduce an epoxy group into the vinyl chloride copolymer. In this case, the content of the repeating unit having an epoxy group in the copolymer is about 1 to 30 mol%, preferably 1 to 20 mol%, and glycidyl acrylate or the like is used as a monomer for introducing an epoxy group. be able to.

The polyester having a polar group can be synthesized by a dehydration condensation reaction between a polyol and a polybasic acid partially having a polar group. Examples of the polybasic acid having a polar group include 5-sulfoisophthalic acid, -Sulfoisophthalic acid, 4-sulfoisophthalic acid, 3-sulfophthalic acid, 5
-Dialkyl sulfoisophthalate, dialkyl 2-sulfoisophthalate, dialkyl 4-sulfoisophthalate,
Examples thereof include dialkyl 3-sulfophthalates and alkali metal salts thereof. Examples of the polyol include trimethylolpropane, hexanetriol, glycerin, trimethylolethane, neopentyl glycol, pentaerythritol, ethylene glycol, propylene glycol, and 1,3-butane. Examples thereof include diol, 1,4-butanediol, 1,6-hexanediol, diethylene glycol, and cyclohexanedimethanol.

The polyurethane having a polar group can be synthesized by reacting a polyol with a polyisocyanate. Specifically, the polyurethane is obtained by reacting a polyol with a polybasic acid partially having a polar group as a polyol. It is synthesized by using the obtained polyester polyol as a raw material. Examples of the polyisocyanate include diphenylmethane-4,4'-diisocyanate, 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, 1,5-naphthalene diisocyanate, and lysine isocyanate methyl ester. As the other synthetic methods of the polyurethane having a polar _{group, Cl-CH 2 CH 2 SO} 3 M with polyurethane and polar group and a chlorine atom with a hydroxyl group, Cl-CH ₂ CH
_{2 OSO 3 M, Cl-CH} 2 CO 2 M, Cl-CH 2 P (=
An addition reaction with a compound such as O) (OM ₁ ) ₂ is also effective.

Other binder resins include vinyl chloride resins such as vinyl chloride-vinyl acetate copolymer, polyolefin resins such as butadiene-acrylonitrile copolymer, polyvinyl acetal resins such as polyvinyl butyral, and celluloses such as nitrocellulose. Resin, styrene resin such as styrene-butadiene copolymer, acrylic resin such as polymethyl methacrylate, polyamide,
A phenol resin, an epoxy resin, a phenoxy resin, or the like may be used in combination, but when these are used in combination, the content is preferably 20% by weight or less of the total binder resin.

The content of the binder resin in the image forming layer is about 1 to 50% by weight, preferably 5 to 40% by weight in the components for forming the image forming layer.

As the curing agent, any curing agent can be used without particular limitation as long as it can cure the image-forming layer. Tolylene isocyanate (TDI) and methylene isocyanate (MDI) It is preferable to use an agent. Examples of such a curing agent include, for example, polyisocyanate used when synthesizing polyurethane in the binder resin described above.

By adding such a curing agent to cure the image forming layer, it is possible not only to improve the durability of the formed image, but also to eliminate the background stain at the portion where ablation has occurred.

Furthermore, since the durability against a solvent can be improved, the image protective layer is laminated without damaging the image forming layer even when an organic solvent is used when applying the image protective layer. Can be. As a result, it is possible to produce an image forming material having better durability than that having an image protective layer made of a water-soluble or water-dispersible resin.

The thickness of the image forming layer is 0.05 to 5.0 μm.
m, preferably in the range of 0.1 to 3.0 μm.
Further, the image forming layer may be composed of a single layer or may be composed of multiple layers having different compositions, but when composed of multiple layers, the wavelength light of the exposure light source can be absorbed in a layer closer to the support. It is preferable to contain a coloring agent in a larger amount. Further, a colorant capable of absorbing light having a wavelength other than the wavelength of the exposure light source may be added to the layer farther from the support.

(Curing Accelerator) In the present invention, when a curing agent is used in the image forming layer, it is preferable to contain a curing accelerator together with the curing agent. As the curing accelerator, any of an organotin compound, an organometallic compound other than tin, a tertiary amine compound, an amphoteric ionic compound, and an organic acid can be used. The addition amount is
It is preferably 0.5 to 25% by weight, and more preferably 1.0 to 10% by weight based on the binder.

(Coloring Agent) The coloring agent used in the present invention is a coloring agent capable of absorbing the wavelength light of the exposure light source. For example, carbon black is a coloring agent having a wide absorption from the ultraviolet region to the visible and infrared regions. Therefore, it can be preferably used.

Specifically, inorganic or organic pigments and dyes are used, and are composed of a single-color, two-color, or three-color pigment compound.

Examples of the inorganic pigment include titanium dioxide, carbon black, zinc oxide, Prussian blue, cadmium sulfide, iron oxide, and chromates of lead, zinc, barium, and calcium. As organic pigments,
Examples include azo-based, thioindigo-based, anthraquinone-based, anthranthrone-based, triphenedioxazine-based pigments, vat dye pigments, phthalocyanine pigments (copper phthalocyanine and derivatives thereof), and quinacridone pigments.
Examples of the organic dye include an acid dye, a direct dye, and a disperse dye.

When the wavelength of the exposure light source is near infrared, organic compounds such as cyanine, polymethine, azurenium, squarium, thiopyrylium, naphthoquinone and anthraquinone dyes, and phthalocyanine dyes can be used as near infrared light absorbers. , Azo- and thioamide-based organometallic complexes are preferably used.
No. 91, 64-33547, JP-A-1-16068
No. 3, No. 1-280750, No. 1-293342,
2-2074, 3-26593, 3-309
Nos. 91, 3-34891, 3-36093, 3-36094, 3-36095, 3-422
Compounds described in Nos. 81, 3-97589 and 3-103476 are exemplified.

Metal atom-containing particles can be preferably used as a coloring agent that further exerts the effects of the present invention. When metal atom-containing particles are used as a colorant in the image forming layer of the image forming material of the present invention, the effects become more remarkable in improving sensitivity, resolution, and contamination of exposed portions.

(Metal atom-containing particles) Metal atom-containing particles are a general term for compounds such as metals such as iron, chromium, manganese, cobalt, nickel, copper, zinc, titanium, silver, aluminum, gold and platinum or oxides thereof. doing.

The metal atom-containing particles preferably used in the present invention include ferromagnetic iron oxide powder, ferromagnetic metal powder, and cubic plate-like powder. Among them, ferromagnetic metal powder can be preferably used.

As ferromagnetic iron oxides, γ-Fe ₂ O ₃ , F
e ₃ O ₄ , or FeOx (1.33) with these intermediate iron oxides
<X <1.50).

Examples of the ferromagnetic metal powder include Fe and Co, Fe-Al, Fe-Al-Ni, and Fe-Al-.
Zn-based, Fe-Al-Co-based, Fe-Al-Ca-based, F
e-Ni system, Fe-Ni-Al system, Fe-Ni-Co
System, Fe-Ni-Zn system, Fe-Ni-Mn system, Fe-
Ni-Si system, Fe-Ni-Si-Al-Mn system, Fe
-Ni-Si-Al-Zn system, Fe-Ni-Si-Al
-Co system, Fe-Al-Si system, Fe-Al-Zn system,
Fe-Co-Ni-P system, Fe-Co-Al-Ca system,
Ferromagnetic metal powders such as metal magnetic powders mainly composed of Ni-Co, Fe, Ni, Co, etc.
Based metal powder is preferred, for example, Co-containing γ-Fe ₂ O ₃ ,
Co-deposited γ-Fe ₂ O ₃ , Co-containing Fe ₃ O ₄ , Co-deposited F
e ₃ O ₄ , Co-containing magnetic FeOx (4/3 <x <3/2)
Cobalt-containing iron oxide-based magnetic powder such as powder.
Also, from the viewpoint of corrosion resistance and dispersibility, among the Fe-based metal powders, Fe-Al-based, Fe-Al-Ca-based, Fe-A
l-Ni system, Fe-Al-Zn system, Fe-Al-Co
System, Fe-Ni-Si-Al-Co system, Fe-Co-A
Fe-Al based ferromagnetic powders such as l-Ca based are preferable, and furthermore, among these, Fe atoms contained in the ferromagnetic powder and Al
Fe: Al = 100: 1 in the content ratio with the atom in atomic ratio.
100: 20 and the ferromagnetic powder ESCA (X
Having a structure in which the content ratio between Fe atoms and Al atoms existing in a surface area of 100 ° or less at an analysis depth by line photoelectron spectroscopy is Fe: Al = 30: 70 to 70:30 in atomic ratio. Alternatively, the ferromagnetic powder contains Fe atoms, Ni atoms, Al atoms, and Si atoms, and at least one of Co atoms and Ca atoms, and has a Fe atom content of 90 atom% or more and a Ni atom content of 1 atom. -10 atomic%, Al atom content is 0.1-5 atomic%, Si atom content is 0.1-5 atomic%, Co atom or Ca atom content (when both are contained, the total amount is ) Is 0.1 to 13 atomic%, and Fe atoms, Ni atoms, Al atoms, and Si atoms are present in a surface area of 100 ° or less at an analysis depth of the ferromagnetic powder by ESCA (X-ray photoelectron spectroscopy). , Co atom and / or Ca atom Fe content ratio in atomic ratio: N
i: Al: Si: (Co and / or Ca) = 100:
(4 or less): (10-60): (10-70): (20
To 80) are preferred.

The shape of the ferromagnetic powder is such that the major axis diameter is 0.3.
0 μm or less, preferably 0.20 μm or less. According to such a ferromagnetic powder, the surface property of the image forming layer is improved.

Examples of the hexagonal plate-like powder include hexagonal ferrites such as barium ferrite and strontium ferrite.
i, Co, Zn, In, Mn, Ge, Hb, etc.).
E trans on MAG, p18, 16 (198
Those described in 2) can be mentioned. Among these, as an example of the barium ferrite magnetic powder, an average particle size in which at least a part of Fe is replaced by Co and Zn (diagonal height of the plate surface of hexagonal ferrite) is 400.
And a plate ratio (a value obtained by dividing a diagonal length of a plate surface of hexagonal ferrite by a plate thickness) of 2.0 to 10.0 °.
It is. In addition, barium ferrite magnetic powder further contains F
A part of e may be replaced with a transition metal such as Ti, In, Mn, Cu, Ge, and Sn.

A method for producing a cubic magnetic powder includes, for example, melting an oxide and a carbonate of each atom necessary for forming a target barium ferrite together with a glass-forming substance such as boric acid; The obtained melt is quenched to form a glass, then the glass is heat-treated at a predetermined temperature to precipitate the desired barium ferrite crystal powder, and finally the glass component is removed by a heat treatment. In addition to the chemical conversion method, there are a coprecipitation-calcination method, a hydrothermal synthesis method, a flux method, an alkoxide method, a plasma jet method and the like.

The content of the metal atom-containing particles contained in the image forming layer is about 50 to 99% by weight, preferably 60 to 95% by weight of the components for forming the image forming layer.

(Other Additives) In the image forming layer, a durability improver, a dispersant,
Additives such as antistatic agents and fillers may be included.

Examples of the durability improver include polyisocyanate. Examples of the dispersant include fatty acids having 12 to 18 carbon atoms such as lauric acid and stearic acid, and amides, alkali metal salts, and alkaline earth metal salts thereof;
Polyalkylene oxide alkyl phosphates, lecithin, trialkyl polyolefin oxy quaternary ammonium salts; azo compounds having a carboxyl group and a sulfone group; and the like. Antistatic agents include cationic surfactants and anions. Surfactants, nonionic surfactants, polymer antistatic agents, conductive fine particles, etc., and “11290 Chemical Products”, Chemical Daily, p. 875
To 876 and the like.

As the filler, carbon black, graphite, TiO ₂ , BaSO ₄ , ZnS, MgC
O ₃ , CaCO ₃ , ZnO, CaO, WS ₂ , MoS ₂ , M
gO, SnO ₂ , Al ₂ O ₃ , α-Fe ₂ O ₃ , α-FeO
OH, SiC, CeO ₂ , BN, SiN, MoC, B
Inorganic fillers such as C, WC, titanium carbide, corundum, artificial diamond, garnet, garnet, quartzite, triboli, diatomaceous earth, dolomite, polyethylene resin particles, fluororesin particles, guanamine resin particles, acrylic resin particles, silicon resin particles And organic fillers such as melamine resin particles.

Further, examples of the filler include inorganic fine particles and organic resin particles which may also serve as a releasing agent. Examples of the inorganic particles include silica gel, calcium carbonate, titanium oxide, acid clay, activated clay, and alumina.
Resin particles such as guanamine resin particles, acrylic resin particles, and silicon resin particles can be used. These inorganic / organic resin particles differ depending on the specific gravity, but are preferably added in an amount of 0.1 to 70% by weight.

As the support for the image forming layer, acrylates, methacrylates, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polycarbonate, polyarylate, polyvinyl chloride, polyethylene, polypropylene, polystyrene, nylon, aromatic Polyamide, polyetheretherketone, polysulfone, polyethersulfone,
Each resin film such as polyimide, polyetherimide,
Further, a transparent support such as a resin film obtained by laminating two or more layers of the above resin can be given.

In the present invention, the support is a support capable of transmitting 50% or more of light of the wavelength of the exposure light source, and is preferably stretched and heat-set into a film from the viewpoint of dimensional stability, which impairs the effects of the present invention. Fillers such as titanium oxide, zinc oxide, barium sulfate, and calcium carbonate may be added as long as they do not. The thickness of the support is about 10 to 500 μm, preferably 25 to 250 μm.

<Image Protective Layer> (Binder Resin) A binder resin is used for the image protective layer provided on the image forming material of the present invention as needed. The binder resin can be used without any particular limitation as long as it can sufficiently hold the additive and the filler. Examples of such a binder resin include polyurethane, polyester, vinyl chloride resins such as vinyl chloride copolymers, vinyl chloride resins such as vinyl chloride-vinyl acetate copolymers, and polyolefin resins such as butadiene-acrylonitrile copolymers. Resins, polyvinyl acetal resins such as polyvinyl butyral, cellulose resins such as nitrocellulose, styrene resins such as styrene-butadiene copolymer, acrylic resins such as polymethyl methacrylate,
Acetal resins such as polyamide, phenolic resin, epoxy resin, phenoxy resin, polyvinyl butyral, polyvinyl acetoacetal, and polyvinyl formal,
There are water-soluble resins such as polyvinyl alcohol and gelatin.

The binder resin may be used alone or in combination of two or more. The content of the binder resin in the image protective layer is 10 to 9 in the components for forming the image protective layer.
It is about 9.5% by weight, preferably 40 to 98% by weight.

When the image protective layer is cured, it is preferable to use a resin having a functional group capable of undergoing a crosslinking reaction with a curing agent in the molecule as a binder selected. Specifically, when an isocyanate-based curing agent is used as a curing agent, a phenoxy resin, an epoxy resin, a cellulose resin, an acetal resin, an acrylic resin, a urethane resin, a vinyl chloride resin, a polyester resin, or the like is used. Is preferred.

(Curing Agent) It is preferable to add a curing agent such as polyisocyanate in order to increase the durability of the protective layer. As a binder selected when curing the protective layer, it is preferable to use a resin having a functional group capable of undergoing a crosslinking reaction with a curing agent in the molecule. In particular,
When using an isocyanate-based curing agent as a curing agent, a phenoxy-based resin, an epoxy-based resin, a cellulose-based resin,
Acetal resin, acrylic resin, urethane resin,
It is preferable to use a vinyl chloride resin, a polyester resin, or the like.

By adding such a curing agent to cure the image protective layer, it is possible not only to increase the durability of the formed image, but also to eliminate the background stain at the portion where ablation has occurred. Further, the strength of the entire image forming layer can be improved by the image protective layer, and when an image is formed, the boundary between the portion where ablation has occurred and the other portion can be kept sharp. Therefore, the resolution can be improved.

(Lubricant) In the image protective layer of the image forming material,
It is preferable to contain at least one additive (lubricant) among waxes, silicon compounds and fluorine compounds.

Specific examples of the wax include solid waxes such as beeswax, candelilla wax, paraffin wax, ester wax, montan wax, carnauba wax, amide wax, polyethylene wax, and microcrystalline wax.

Specific examples of the silicon-based compound (including a wax-like compound) include straight silicone oil such as dimethyl silicone oil, methylphenyl silicone oil and methyl hydrogen silicone oil, olefin-modified silicone oil, and polyether-modified silicone. Oil, epoxy-modified silicone oil, epoxy / polyether-modified silicone oil, alcohol-modified silicone oil, fluorine-modified silicone oil, amino-modified silicone oil, phenol-modified silicone oil, mercapto-modified silicone oil, carboxy-modified silicone oil, higher fatty acid-modified silicone oil Radical reactive silicone oils such as silicone oil modified with carnauba, silicone oil modified with amide, silicone oil modified with (meth) acrylic, And it can include terminal reactive silicone oil such as silicone diamine, a halogen group, an alkoxy group, an ester group, an amide group, an organic modified silicone oil modified with an imide group or the like.

Examples of the fluorine compound include fluorine resins such as polytetrafluoroethylene, tetrafluoroethylene copolymers (eg, alkyl vinyl ether, ethylene, etc.), polyvinylidene fluoride, fluoroalkyl methacrylate, fluorine rubber, and perfluoropolyethylene. Low molecular weight fluorine compounds such as ether oil, fluorine alcohol, fluorine carboxylic acid, perfluoroalkyl carboxylate, perfluoroalkyl quaternary ammonium salt, perfluoroalkyl betaine, perfluoroalkyl ethylene oxide (adduct), perfluoroalkyl oligomer And the like. The added amount of each of these materials is preferably 0.1% of the solid content in the image protective layer.
1 to 30% by weight, more preferably 0.5 to 20%.
wt%. When multiple additions are made, the value is a multiple of this.

(Fine Particles) The fine particles to be added to the image protective layer include carbon black, graphite, TiO ₂ ,
BaSO ₄ , ZnS, MgCO ₃ , CaCO ₃ , ZnO,
CaO, WS ₂ , MoS ₂ , MgO, SnO ₂ , Al
₂ O ₃ , α-Fe ₂ O ₃ , α-FeOOH, SiC, CeO
₂ , inorganic fillers such as BN, SiN, MoC, BC, WC, titanium carbide, corundum, artificial diamond, garnet, garnet, quartzite, triboli, diatomaceous earth, dolomite, polyethylene resin particles, fluorine compound particles, guanamine resin Organic fillers such as particles, acrylic resin particles, silicon-based compound particles, and melamine resin particles can be used.

Further, examples of the fine particles include inorganic fine particles and organic resin particles, which may also serve as a release agent. Examples of the inorganic fine particles include silica gel, calcium carbonate, titanium oxide, acid clay, activated clay, and alumina.Examples of the organic fine particles include fluorine compound particles, guanamine resin particles, acrylic resin particles, and silicon compound particles. Resin particles can be used.
These inorganic and organic resin particles vary depending on the specific gravity,
Addition of 0.1 to 70% by weight is preferred.

These fine particles preferably have a narrow particle size distribution and a uniform particle size. Specifically, Toshiba Silicone Co., Ltd., silicone resin fine particles (product name Tospearl)
And Soken Chemical Co., Ltd., crosslinked acrylic fine powder MR series, crosslinked polystyrene fine powder SGP series, acrylic ultrafine powder MP series, and the like.

The average particle diameter r of the fine particles used in the present invention is preferably 0.3 μm or more and 20 μm or less, more preferably 0.8 μm or more and 4.5 μm or less.

The abundance per unit area of the fine particles used in the present invention, the so-called attached amount, is 5 mg / m ² or more and 150 mg / m ² or more.
mg / m ² or less, more preferably 10 mg / m ² or less.
m ² or more and 100 mg / m ² or less.

When the surface of the fine particles used in the present invention has a polymerizable functional group, the adhesion between the image forming layer and the fine particles is improved when the image forming layer is cured, so that the image durability is further improved.

The thickness of the image protective layer of the present invention is from 0.03 to
It is preferably 1.0 μm, more preferably 0.05 to 0.8 μm, and particularly preferably 0.1 to 0.4 μm.

<Method for Producing Image Forming Material> Lamination and adhesion between the image forming body and the transfer receiving body can be performed by pressurization or heating and pressurization.

The pressurizing or heat-pressing treatment can be used without any particular limitation as long as it can increase the adhesiveness and can pressurize or heat-press without admixing air bubbles. When a pressure roll, a stamper or the like is heated and pressurized, a thermal head, a heat roll, a hot stamp or the like can be used.

The pressure when using a pressure roll is as follows:
Usually 0.1 to 20 kg / cm, preferably 0.5 to 10
kg / cm, and the transfer speed is usually 0.1 to 20
0 mm / sec, preferably 0.5 to 100 mm / sec, and the pressure when using a stamper is usually 0.1 mm / sec.
05 to 10 kg / cm ² , preferably 0.5 to ⁵ kg / cm ²
cm ² , and the pressurization time is usually 0.1 to 50 seconds, preferably 0.5 to 20 seconds. Also, the thermal head
The heating temperature when using a heat roll, which can be used as it is under the conditions used for ordinary melt transfer, sublimation transfer, etc., is usually 60 to 200 ° C., preferably 80 to 1 ° C.
80 ° C., and the pressure is usually 0.1 to 20 kg /
cm, preferably 0.5 to 10 kg / cm, and
The conveying speed is usually 0.1 to 200 mm / sec, preferably 0.5 to 100 mm / sec, and the heating temperature when using a hot stamp is usually 60 to 200 ° C, preferably 80 to 150 ° C. The range and pressure are usually 0.1.
05 to 10 kg / cm ² , preferably 0.5 to ⁵ kg / cm ²
cm ² and the heating time are usually 0.1 to 50 seconds, preferably 0.5 to 20 seconds.

<Image Forming Method> An image forming method using the image forming material of the present invention is a method in which an image forming layer of an image forming body and a transfer receiving layer of a transfer receiving body are brought into close contact with each other and exposed with high-density energy light. However, the bonding force between the image forming layer of the irradiation part and the transfer object does not substantially change, the bonding force between the support of the image formation member and the image formation layer decreases, and the transfer member and the image forming layer When the body is separated, the image forming layer of the irradiation section is transferred to the transfer target.

In the image exposure, in order to obtain a high resolution, an electromagnetic wave whose energy application area can be narrowed, particularly, a wavelength of 1 n
Ultraviolet light, visible light, and infrared light of m to 1 mm are preferable. Examples of light sources to which such light energy can be applied include lasers, light-emitting diodes, xenon flash lamps, halogen lamps, carbon arc lamps, metal halide lamps, tungsten lamps, and quartz lamps. A mercury lamp, a high-pressure mercury lamp, and the like can be given. The energy applied at this time depends on the type of the image forming material, the exposure distance,
By adjusting the time and intensity, it can be selected as appropriate.

In the case of performing the above-described energy collective exposure,
What is necessary is just to overlap and expose the mask material which formed the negative pattern of the desired exposure image with the light-shielding material.

When an array type light source such as a light emitting diode array is used, or when a light source such as a halogen lamp, a metal halide lamp, or a tungsten lamp is exposed and controlled by an optical shutter material such as a liquid crystal or PLZT, an image signal is used. It is possible to carry out the corresponding digital exposure. In this case, direct writing can be performed without using a mask material. However, in this method, a new optical shutter material is required in addition to the light source. Therefore, in the case of digital exposure, it is preferable to use a laser as the light source.

When using laser light as a light source,
It is possible to form a latent image by scanning light according to image data by squeezing light into a beam, and furthermore, by using a laser as a light source, it is easy to narrow the exposure area to a very small size, and it is possible to form a high-resolution image Formation is possible.

As the laser light source used in the present invention, generally known ruby laser, YAG
Solid lasers such as lasers and glass lasers;
Gas lasers such as Ne laser, Ar ion laser, Kr ion laser, CO ₂ laser, CO laser, He-Cd laser, N ₂ laser, excimer laser; InGaP laser, AlGaAs laser, Ga
Semiconductor lasers such as AsP laser, InGaAs laser, InAsP laser, CdSnP ₂ laser, and GaSb laser; chemical lasers, dye lasers, and the like; Using a laser in the near-infrared region from visible light of 1200 nm can efficiently convert light energy into heat energy.
It is preferable in terms of sensitivity.

The exposure direction of the high-density light energy is preferably from the support side of the image forming layer.

Examples of the method of peeling the transferred object include a peeling plate, a method of fixing a peeling angle with a peeling roll, and a manual peeling method of peeling off the transferred object and the image forming material without fixing the image forming material by hand. Various peeling methods can be used if they do not affect the formation.

[0093]

EXAMPLES The present invention will be described below in detail with reference to examples, but embodiments of the present invention are not limited thereto. In the following, “parts” means “parts by weight as active ingredients” unless otherwise specified. The transmission density is a transmission density obtained by measuring a visible light transmission density using Xrite manufactured by X-rite.

Example 1 (Sample Nos. 1 to 6) 1 (Comparative Example) An image forming material was prepared by using a support, a colorant layer, a protective layer,
It was prepared using a transfer object.

<Support> A transparent polyethylene terephthalate film (T-60, manufactured by Toray Industries, Inc.) in which the lamination surface of the colorant layer having a thickness of 100 μm was subjected to corona discharge treatment.

<Image forming layer> The following composition was kneaded and dispersed using an open kneader to prepare an image forming layer forming coating solution containing an inorganic metal compound as a coloring agent, and was extruded onto a support. After applying and then drying,
Perform the following surface treatment with a calender, and
By curing for a time, an image forming layer cured by heat with a transmission density of 3.2 was formed.

100 parts of Fe—Si—Al—Ni—Co ferromagnetic metal powder [Fe: Si: Al: Ni: Co atomic ratio = 100: 1: 4: 3: 5 (whole), average major axis diameter : 0.14 μm, Hc: 1760 Oe, σs: 120 emu / g, BET: 59 m ² / g] 9 parts of vinyl chloride resin containing potassium sulfonate group [MR-110, manufactured by Nippon Zeon Co., Ltd.] Sodium sulfonate group Contained polyurethane resin 6 parts [Toyobo Co., Ltd., UR-8300] Stearic acid 1 part Myristinic acid 1 part Butyl stearate 1 part α-alumina [Sumitomo Chemical Co., Ltd. HIT-60A] 5 parts Polyisocyanate compound 5 Parts [Corronate L, manufactured by Nippon Polyurethane Industry Co., Ltd.] 100 parts of cyclohexanone 100 parts of methyl ethyl ketone 100 parts of toluene Calendar treatment A speed of 10 m / min while applying a linear pressure of 10 kg / cm between a calender roll in which a 3 mm thick polyimide resin is wound around a metal roll having a diameter of 300 mm and a metal roll having a diameter of 300 mm and heated to 80 ° C. And heat and pressure treatments were performed.

<Image Protecting Layer> A composition comprising the following resin binder, fine particles and additives is laminated on the image forming layer by wire bar coating so as to have a thickness of 0.25 μm, and thermally cured at 60 ° C. for 72 hours. did.

UCAR phenoxy resin PKHH (manufactured by Union Carbide) 2.24 parts Coronate HX (manufactured by Nippon Polyurethane Industry Co., Ltd.) 0.6 part Polyethylene wax CE-155 (manufactured by Koyo Chemical Co., Ltd.) 0.11 part Silicone fine particles Tospearl T-120 [manufactured by Toshiba Silicone Co., Ltd.] 0.06 parts Toluene 58.2 parts Cyclohexanone 38.8 parts.

<Transfer object> A transparent polyethylene terephthalate film (T-100E, manufactured by Diafoil Hoechst Co., Ltd.) having a thickness of 38 μm is coated with a transfer layer having the following composition to a thickness of 1.4 μm and dried. A transfer object was obtained.

Composition of layer to be transferred Polyurethane resin Nipporan 3109 (manufactured by Nippon Polyurethane Industry Co., Ltd.) (softening point: 45 ° C.) 4.9 parts Silicone resin fine particles Tospearl T-120 0.1 part Toluene 38 parts Methyl ethyl ketone 38 parts Cyclohexanone 19 parts .

<Image Forming Method> A colorant layer was formed on the above support.
The image forming body on which the protective layer is laminated and the transfer-receiving body are opposed to each other, and heated and pressed by a facing heat roller so that they are brought into close contact with each other, and the adhesive strength is JIS C 2107 (JIS).
Z 0237) in the 180 degree peeling method.
It was adjusted to fall within the range of 20 gf / cm.

Using a semiconductor laser (TCP-1080, manufactured by Dainippon Screen Mfg. Co., Ltd., dominant wavelength: 830 nm), the surface of the colorant layer was focused, and 3 mm from the colorant layer support side.
Image exposure was performed by scanning and exposing with an energy of 00 mj / cm ² , an unnecessary colorant layer in an exposed portion was transferred imagewise onto a transfer member, and an image was formed by peeling the transfer member.

Sample No. Sample No. 2 (Comparative Example) Sample No. 1 was changed except that the coating liquid for the transfer-receiving layer was changed to the following composition. An image was formed in the same manner as in Example 1.

Transferred layer composition Polyurethane resin Nipporan 3116 (manufactured by Nippon Polyurethane Industry Co., Ltd.) (softening point 75 ° C.) 4.9 parts Silicone resin fine particles Tospearl T-120 0.1 part Toluene 38 parts Methyl ethyl ketone 38 parts Cyclohexanone 19 parts .

The sample No. Sample No. 3 (Invention) Sample No. 1 was changed except that the coating liquid for the transfer-receiving layer was changed to the following composition. An image was formed in the same manner as in Example 1.

Transferred layer composition Polyurethane resin Nipporan 5120 (manufactured by Nippon Polyurethane Industry Co., Ltd.) (softening point 100 ° C.) 4.9 parts Silicone resin fine particles Tospearl T-120 0.1 part Toluene 38 parts Methyl ethyl ketone 38 parts Cyclohexanone 19 parts .

The sample No. Sample No. 4 (Invention) Sample No. 1 was changed except that the coating liquid for the transfer-receiving layer was changed to the following composition. An image was formed in the same manner as in Example 1.

Transfer Layer Composition Polyurethane Resin Nipporan 5120 (manufactured by Nippon Polyurethane Industry Co., Ltd.) (softening point 100 ° C.) 3.43 parts Nipporan 3109 (manufactured by Nippon Polyurethane Industry Co., Ltd.) (softening point 45 ° C.) 1.47 Part Silicone resin particles Tospearl T-120 0.1 part Toluene 38 parts Methyl ethyl ketone 38 parts Cyclohexanone 19 parts.

The sample No. Sample No. 5 (Invention) Sample No. 1 was changed except that the coating liquid for the transfer-receiving layer was changed to the following composition. An image was formed in the same manner as in Example 1.

Composition of Layer to be Transferred Polyurethane resin Nipporan 5138 (manufactured by Nippon Polyurethane Industry Co., Ltd.) (softening point: 80 ° C.) 3.43 parts Nipporan 3109 (manufactured by Nippon Polyurethane Industry Co., Ltd.) (softening point: 45 ° C.) 1.47 Part Silicone resin particles Tospearl T-120 0.1 part Toluene 38 parts Methyl ethyl ketone 38 parts Cyclohexanone 19 parts.

The sample No. Sample No. 6 (Invention) Sample No. 1 was changed except that the coating liquid for the transfer-receiving layer was changed to the following composition. An image was formed in the same manner as in Example 1.

Composition of Layer to be Transferred Polyurethane resin Nipporan 5196 [manufactured by Nippon Polyurethane Industry Co., Ltd.] (softening point 90 ° C.) 3.43 parts Nipporan 3109 [manufactured by Nippon Polyurethane Industry Co., Ltd.] (softening point 45 ° C.) 1.47 Part Silicone resin particles Tospearl T-120 0.1 part Toluene 38 parts Methyl ethyl ketone 38 parts Cyclohexanone 19 parts.

Sample No. Sample No. 7 (Invention) Sample No. 1 was changed except that the coating liquid for the transfer-receiving layer was changed to the following composition. An image was formed in the same manner as in Example 1.

Composition of Layer to be Transferred Polyurethane resin Nipporan 5230 (manufactured by Nippon Polyurethane Industry Co., Ltd.) (softening point: 130 ° C.) 3.43 parts Nipporan 3109 (manufactured by Nippon Polyurethane Industry Co., Ltd.) (softening point: 45 ° C.) 1.47 Part Silicone resin particles Tospearl T-120 0.1 part Toluene 38 parts Methyl ethyl ketone 38 parts Cyclohexanone 19 parts.

Sample No. Sample No. 8 (Comparative Example) Sample No. 1 was changed except that the coating liquid for the transfer-receiving layer was changed to the following composition. A sample was prepared in the same manner as in Sample No. 1, but no image formation was performed because bonding was substantially impossible.

Composition of Layer to be Transferred Polyurethane resin Nipporan 5025 [manufactured by Nippon Polyurethane Industry Co., Ltd.] (softening point: 160 ° C.) 3.43 parts Nipporan 3109 [manufactured by Nippon Polyurethane Industry Co., Ltd.] (softening point: 45 ° C.) 1.47 Part Silicone resin particles Tospearl T-120 0.1 part Toluene 38 parts Methyl ethyl ketone 38 parts Cyclohexanone 19 parts.

Sample No. Sample No. 9 (Invention) Sample No. 1 was changed except that the coating liquid for the transfer-receiving layer was changed to the following composition. An image was formed in the same manner as in Example 1.

Composition of layer to be transferred Polyurethane resin Nipporan 5120 [manufactured by Nippon Polyurethane Industry Co., Ltd.] (softening point 100 ° C.) 2.4 parts Nipporan 3109 [manufactured by Nippon Polyurethane Industry Co., Ltd.] (softening point 45 ° C.) 1.03 Part Tackifier Tamanol 521 (manufactured by Arakawa Chemical Co., Ltd.) (Alkylphenol resin: molecular weight 1760) 1.47 parts Silicone resin fine particles Tospearl T-120 0.1 part Toluene 38 parts Methyl ethyl ketone 38 parts Cyclohexanone 19 parts.

Sample No. Sample No. 10 (Invention) Sample No. 1 was changed except that the coating liquid for the transfer-receiving layer was changed to the following composition. An image was formed in the same manner as in Example 1.

Transfer Layer Composition Polyurethane Resin Nipporan 5120 [manufactured by Nippon Polyurethane Industry Co., Ltd.] (softening point 100 ° C.) 1.37 parts Nipporan 3109 [manufactured by Nippon Polyurethane Industry Co., Ltd.] (softening point 45 ° C.) 0.59 Part Tackifier Tamanol 521 [manufactured by Arakawa Chemical Co., Ltd.] 2.94 parts Silicone resin fine particles Tospearl T-120 0.1 part Toluene 38 parts Methyl ethyl ketone 38 parts Cyclohexanone 19 parts.

The sample No. 11 (the present invention) Sample No. 1 was changed except that the coating liquid for the transfer-receiving layer was changed to the following composition. An image was formed in the same manner as in Example 1.

Composition of layer to be transferred Polyurethane resin Byron RV300 (manufactured by Toyobo Co., Ltd.) (softening point: 123 ° C.) 2.4 parts Nipporan 3109 (manufactured by Nippon Polyurethane Industry Co., Ltd.) (softening point: 45 ° C.) 1.03 parts Granting agent Tamanol 521 (manufactured by Arakawa Chemical Co., Ltd.) 1.47 parts Silicone resin fine particles Tospearl T-120 0.1 part Toluene 38 parts Methyl ethyl ketone 38 parts Cyclohexanone 19 parts.

The transmission density (the degree of residual stain) of the formed exposed portion, the transmitted density of the exposed portion after storage at a high temperature, and the resolution were evaluated according to the following criteria. Table 1 shows the evaluation results.

<Evaluation Method> -Transmission Density (Dmin) of Image Forming Layer at Exposure Area- The Vis light transmission density of the ablation part of the image forming material was measured by using Xrite manufactured by X-rite.

◎: 0.01 or less (extremely good)…: 0.01 to 0.05 (substantially no problem is observed in a fine colorant layer scattering powder under a microscope) Δ: 0.06 to 0. 09 (transfer unevenness can be confirmed with a loupe) × 0.10 or more (transfer unevenness can be visually confirmed)-Transmission density of exposed portion after storage at high temperature (Dmin after storage)-Image forming material under high temperature of 55 ° C After exposure for 24 hours, the Vis light transmission density of the ablation portion where an image was formed was measured using X-lite Xrite.

◎: 0.01 or less (extremely good)…: 0.01 to 0.05 (substantially no problem is observed in a fine colorant layer scattering powder under a microscope) Δ: 0.06 to 0. 09 (transfer unevenness can be confirmed with a magnifying glass) × 0.10 or more (transfer unevenness can be visually confirmed) −Resolution− Scanning exposure is performed at a beam diameter of 4 μm, a scanning pitch of 4 μm, and
When an image was formed at 0 mJ / cm ² , the number of resolvable lines per mm (N) was evaluated.

…: 125 = N…: 120 ≦ N <125 Δ: 110 ≦ N <120 ×: N <110

[0129]

[Table 1]

As shown in Table 1, when the resin having a softening point of 80 ° C. or higher was contained in the layer to be transferred (samples 3 to 7), the resin had a lower Dm after storage than the case where the resin was not contained (samples 1 and 2).
in. It can be seen that the deterioration of is suppressed. Further, when a resin having a softening point exceeding 150 ° C. was contained (sample 8), it was substantially impossible to bond the transfer-receiving body to the image forming body. When a resin having a softening point of 80 to 150 ° C. is contained and a tackifier is contained (sample 9), Dmin. , Dmin. , The resolution of the three can be compatible. However, when the amount of the tackifier exceeds 50 parts by weight (sample 10), Dmi
n. , Dmin. It turns out that both deteriorate and it is not preferable. When the content of the polyurethane resin in the layer to be transferred was 50 parts by weight or less (Sample 11), although the effect of the present invention was obtained, each performance was slightly deteriorated. It can be seen that the configuration of the present invention (samples 3 to 7, 9) in which 50 parts by weight or more is a polyurethane resin is more preferable.

[0131]

According to the present invention, an ablation-type image-forming material having excellent high-temperature preservability and an image-forming method using the same can be provided.

Claims (5)

[Claims] 1. An image forming body having an image forming layer on a support, and a transfer receiving body having a transfer receiving layer, wherein high-density energy light is irradiated from the support side, and the image forming layer and the support in an exposed portion are exposed. An image forming material for forming an image by lowering the bonding force with the transfer member and separating the transfer member from the image forming member, characterized in that the transfer layer contains a resin having a softening point of 80C to 150C. Image forming material. 2. An image forming layer having an image forming layer on a support, and a transfer receiving body having a transfer receiving layer, wherein high-density energy light is irradiated from the support side, and the image forming layer and the support in the exposed area are exposed. In an image forming material for forming an image by lowering the bonding force with the transfer member and separating the transfer member and the image forming member, a resin having a softening point of 80 ° C to 150 ° C and a tackifier are added to the transfer layer. An image forming material characterized by containing. 3. The image forming material according to claim 2, wherein the content of the tackifier in the layer to be transferred is 50 parts by weight or less. 4. The image forming material according to claim 1, wherein at least 50 parts by weight of the layer to be transferred is a polyurethane resin. 5. The image forming material according to claim 1, which is irradiated with high-density energy light from the support side to reduce the bonding strength between the image forming layer in the exposed portion and the support, An image forming method, wherein an image is formed by separating a transfer object and an image forming body.