JPH09106079A - Image forming method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image forming method capable of easily peeling off a release agent for obtaining an image of high density and high resolution by exposing to high density energy light to an image forming material and peeling off the release agent. SOLUTION: An image forming material 10 having an image forming layer and a release agent 2 in this order on a carrier 1 is used and exposed to an image pattern of high density energy light, thereby reducing bonding strength between the carrier 1 and peeling off the release agent to form an image. Regarding this image forming method, a release end is formed on a zone outside an image forming zone under exposure, and the image forming material 10 having an image forming layer on the carrier 1 is used for exposure to an image pattern of high density energy light. Bonding strength between the carrier 1 and the image forming layer at the exposed part is thereby reduced, and the bonding layer or adhesive layer of the release agent 2 having both layers is pasted to the image forming layer and then the release agent 2 is peeled off to form an image. In this case, a release end 6 is formed outside an image forming zone under exposure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image provided with a special peeling edge in advance in order to obtain a high density and high resolution image by exposing the image forming material to high density energy light and peeling the peeling material. The present invention relates to an image forming method capable of easily peeling a peeling material without using a forming material.

[0002]

2. Description of the Related Art Heretofore, there has been known a recording method in which light energy such as a laser beam is focused and irradiated on a recording material to melt or deform a part of the material, or to scatter, burn or evaporate. These are dry treatments that do not require treatment liquids such as chemicals, and have the advantage that a high contrast can be obtained by melting and deforming only the light irradiation part, scattering and / or removing by evaporation, It is used as a resist material, an optical recording material such as an optical disk, and an image forming material that makes itself a visible image.

[0003] For example, Japanese Patent Application Laid-Open Nos.
-105638, 62-115153 and the like describe methods for photo-decomposing a binder resin by pattern exposure to form a resist pattern and materials therefor, as disclosed in JP-A-55-132536, 57-27788, and JP-A-57-27788. 57
JP-A-103137 discloses that an inorganic compound thin film provided by a vapor deposition method is exposed to light to record information by melting deformation of the film.
No. 87, No. 6-40163 and the like, a material for information recording by removing a colored binder layer by photothermal conversion,
U.S. Pat. No. 4,245,003 and the like each disclose an image forming material containing graphite or carbon black and an image forming material having a release material.

[0004]

When the image forming method described in the above US patent is used, it is difficult to peel off the release material when the image forming layer and the release material have the same size. In particular, if mechanical peeling is attempted in the device, the device becomes complicated and peeling tends to be unstable.

Therefore, JP-A-52-16538, JP-A-52-131015, and JP-A-52-132615.
JP-A-54-27423 and the like describe a method for facilitating the peeling by providing a peeling end on the image forming material, but both methods are provided on the image forming material in advance. Increasing the complexity of the material manufacturing process and increasing costs are inevitable.

The present invention has been made in view of the above circumstances, and an object of the invention is to obtain an image of high density and high resolution by exposing the image forming material to high-density energy light and peeling the release material. An object of the present invention is to provide an image forming method capable of easily peeling a peeling material without using an image forming material provided with a special peeling edge in advance.

[0007]

The above object of the present invention is to perform exposure by imagewise exposing high density energy light using an image forming material having an image forming layer and a release material on a support in this order. In a method of forming an image by peeling the release material to reduce the binding force between the support of the image forming layer and the image forming layer, a peeling end is provided outside the image region by exposure, and the image forming layer is provided on the support. By imagewise exposing a high-density energy light to an image-forming material, the binding force between the support in the exposed area and the image-forming layer is reduced, and peeling having an adhesive layer or an adhesive layer on another support is performed. In the method of forming an image by peeling the release material after attaching the adhesive layer or the adhesive layer of the material to the image forming layer side, the release edge is provided outside the image area by exposure, and the image of high density energy light is formed. In exposure,
The bonding force between the release material and the image forming layer does not substantially change, the release edge is provided on at least one end of the image forming material, and the adhesive roll or the release claw is removed from the release edge provided by exposure. And peeling off the release material.

The present invention will be outlined below item by item.

<Image forming material> -Support-As the support, acrylic acid ester, methacrylic acid ester, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polycarbonate, polyarylate, polyvinyl chloride, polyethylene, polypropylene, polystyrene are used. Examples include transparent supports such as resin films of nylon, aromatic polyamide, polyetheretherketone, polysulfone, polyethersulfone, polyimide, polyetherimide, etc., and resin films formed by laminating two or more layers of the above resins. be able to.

In the present invention, the transparent support means a support capable of transmitting light having an exposure light source wavelength, and it is preferable that it is stretched in a film shape and heat-set in terms of dimensional stability, and the effect of the present invention is obtained. Fillers such as titanium oxide, zinc oxide, barium sulfate, and calcium carbonate may be added within a range that does not hinder it, and a dye may be added for coloring blue. The thickness of the transparent support is about 10 to 500 μm, preferably 25 to 250 μm.

The support of the present invention is modified by a known surface modification technique such as corona discharge treatment or anchor coat treatment in order to improve the adhesiveness and coatability within the range that does not impair the effects of the present invention. Quality, antistatic on the back of the support, transportability,
It may have a layer such as a backing layer for the purpose of preventing plural sheets from being fed or coloring in a range not impairing the effects of the present invention.
When these anchor coats and backing layers are provided, the amount is about 0.001 to 10 μm, and further 0.005
The thickness is preferably 5 μm.

—Image Forming Layer— In the image forming layer, a colorant layer may be laminated on the photothermal conversion layer, or a plurality of layers may be provided for each. Further, the colorant layer may also serve as the photothermal conversion layer.

The colorant contained in the image forming layer is
In the image forming method of the present invention described below, if the binding force between the support in the exposed portion and the image forming layer can be reduced,
It can be used without particular limitation. Among them, the binding force between the support of the exposed portion and the image forming layer is efficiently reduced,
In order to make the image legible, it is preferable to use a photothermal conversion substance and a substance having an absorption in the wavelength range of 300 to 800 nm as the colorant when the image forming layer is formed. The substances having absorption in the wavelength range of 300 to 800 nm may be used alone or in combination of two or more. Further, in the case of a substance having an absorption in a wavelength range of 300 to 800 nm which can also act as a light-to-heat conversion substance, only a substance which also serves as a light-to-heat conversion substance may be used as a coloring agent.

As such a photothermal conversion substance, an organic compound and / or an inorganic compound can be used, and as the organic compound, for example, a dye or dye having absorption in a wavelength range of 600 to 1200 nm, that is, cyanine. Dyes, rhodacyanine dyes, oxonol dyes, carbocyanine dyes,
Examples thereof include dicarbocyanine dyes, tricarbocyanine dyes, tetracarbocyanine dyes, pentacarbocyanine dyes, styryl dyes, pyrylium dyes, phthalocyanine dyes, and metal-containing dyes. Specifically, Chem. Rev .. 9
2,1197 (1992) etc. can be used. Examples of the inorganic compound include graphite, carbon black, cobalt trioxide, iron oxide, chromium oxide, copper oxide and titanium black.

As the substance having absorption in the wavelength range of 300 to 800 nm, an organic compound and / or an inorganic compound can be used like the photothermal conversion substance. As the organic compound, for example, various conventionally known dyes can be used. , Dyes or organic pigments, and examples of the inorganic compound include conventionally known inorganic pigments, metal oxide powders, metal nitride powders, metal carbide powders, metal sulfide powders, and the like. Various magnetic powders and the like used for paints and the like can also be preferably used in the present invention.

In the case of using only the above-mentioned coloring agent having absorption in the wavelength range of 300 to 800 nm which also serves as a light-heat converting substance, the coloring agent is present in the layer in a dispersed state and is colored. It is preferable that the agent itself is not porous because an image having a smaller residual ratio of the image forming layer in the exposed area on the support can be obtained in the image forming method described later.

As such a colorant, 300 to 800 n
Examples thereof include inorganic compounds having absorption in the wavelength range of m, such as the above-mentioned metal oxide powder, metal nitride powder, metal carbide powder, and various magnetic powders used in magnetic ink and the like. When obtaining an image of resolution, the particle size is preferably 0.5 μm or less, and more preferably 0.3 μm.

For example, when the magnetic powder is used among them, ferromagnetic iron oxide powder, ferromagnetic metal powder, cubic crystal plate powder and the like can be appropriately selected and used. Among them, the ferromagnetic metal powder can be used. It can be preferably used. The shape of the ferromagnetic powder has a major axis diameter of 0.30 μm or less, preferably 0.20.
It is preferably not more than μm, and by using such a ferromagnetic powder, not only an image with a small residual ratio of the exposed portion can be obtained, but also the surface property of the image forming layer is improved.

The content of the colorant contained in the image forming layer is about 10 to 99% by weight, preferably 30 to 95% by weight of the components forming the image forming layer.

As the binder, vinyl chloride resin such as vinyl chloride-vinyl acetate copolymer, polyolefin resin such as butadiene-acrylonitrile copolymer, polyvinyl acetal resin such as polyvinyl butyral, cellulose resin such as nitrocellulose, etc. Examples thereof include styrene resins such as styrene-butadiene copolymer, acrylic resins such as polymethylmethacrylate, polyamides, phenol resins, epoxy resins, phenoxy resins and the like.

The image forming layer forming coating liquid containing the above-mentioned colorant may be coated on a transparent support and then cured. Curing can be performed by a conventionally known curing method such as thermal curing, active energy curing, and moisture curing. To sufficiently perform curing, the image forming layer is cured by thermal curing and / or active energy ray curing. It is preferred that

The thermosetting binder resin used for thermosetting and the curing agent added as necessary include a binder resin having a hydroxyl group, a carboxylic acid group or a sulfonic acid group and a curing agent having an isocyanate group, an epoxy group. Examples of the binder resin or curing agent include a binder resin or curing agent containing an amino group, or a binder resin or curing agent containing an acid anhydride. Further, a resin which can be heat-cured using a catalyst or the like can be appropriately selected. Can be used.

The content of the binder resin contained in the image forming layer is about 1 to 90% by weight of the image forming layer forming components,
It is preferably 5 to 70% by weight. The curing agent or the catalyst is used in an amount of usually 0.1 to 200 parts by weight, more preferably 0.5 to 10 parts by weight, based on 100 parts by weight of the thermosetting binder resin.
It is preferable to use by adding and mixing in the range of 0 parts by weight.

In the active energy ray curing, a conventionally known combination of a compound having an ethylenically unsaturated double bond or a compound having an epoxy group with a polymerization initiator can be used.

In the image forming layer, a lubricant, a durability improver, and
Additives such as dispersants, antistatic agents, fillers and fillers may be included.

Examples of lubricants include fatty acids, fatty acid esters, fatty acid amides, (modified) silicone oils, (modified) silicone resins, fluororesins, fluorocarbons, and the like. Durability improvers include polyisocyanates and the like. Can be mentioned. 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 polyolefinoxy A quaternary ammonium salt; an azo compound having a carboxyl group and a sulfone group; and the above-mentioned thermosetting binder resin, active energy ray-curable compound or binder resin, -SO ₃ M , -OSO ₃ M, -C
OOM and —PO (OM ₁ ) ₂ [where M represents a hydrogen atom or an alkali metal, and M ₁ represents a hydrogen atom, an alkali metal or an alkyl group] It can be used as a dispersant for improving dispersibility.

Examples of the antistatic agent include cationic surfactants, anionic surfactants, nonionic surfactants, polymer antistatic agents, conductive fine particles and the like, "11290 chemical products", Chemical Industry Daily , P. And the compounds described in 875-876 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 ₂
H, SiC, CeO ₂ , BN, SiN, MoC, BC,
Inorganic fillers such as WC, titanium carbide, corundum, artificial diamond, garnet, garnet, quartzite, triboli, diatomaceous earth, dolomite, polyethylene resin particles, fluorine resin particles, guanamine resin particles, acrylic resin particles, silicone resin particles, melamine Organic fillers such as resin particles can be used.

The amount of these additives added is about 0 to 20% by weight, preferably 0 to 15% by weight. The thickness of the image forming layer is about 0.05 to 5.0 μm, preferably 0.1 to
It is in the range of 3.0 μm.

-Release material-Using a resin having a self-supporting property, directly on the image forming layer,
The release material may be provided by a method such as coating or hot melt extrusion, or an adhesive layer or an adhesive layer is provided on the resin film used as the support as described above by a method such as coating or hot melt extrusion. Alternatively, the adhesive layer or the pressure-sensitive adhesive layer may be bonded to the image forming layer so as to face the image forming layer to form a release material. The bonding may be before or after exposure.

—Adhesive Layer or Adhesive Layer— Any of those having adhesiveness or adhesiveness at ordinary temperature and those exhibiting adhesiveness or adhesiveness when heat or pressure is applied, for example, resin having low softening point It can be formed by appropriately selecting an adhesiveness-imparting agent and a thermal solvent.

As the resin having a low softening point, 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 resin such as polyethylene and polypropylene; polyvinyl ether resin; acrylic resin such as polybutyl methacrylate;
Ionomer resins; cellulose resins; epoxy resins; vinyl chloride resins such as vinyl chloride-vinyl acetate copolymers, and the like. Examples include unmodified or modified products such as rosin phenol, terpenes, petroleum resins and modified products thereof. Examples of the heat solvent include compounds that are solid at ordinary temperature and reversibly liquefy or soften when heated, and specifically, terpineol, menthol, acetamide, benzamide, coumarin, benzyl cinnamate, diphenyl ether, crown ether, Monomolecular compounds such as camphor, p-methylacetophenone, vanillin, dimethoxybenzaldehyde, p-benzylbifevir, stilbene, margaric acid, eicosanol, cetyl palmitate, stearamide, 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 resin, rosin phenol Rosin derivatives such as fats, phenol resins, ketone resins, epoxy resins, diallyl phthalate resins, terpene hydrocarbon resins, cyclopentadiene resins, polyolefin resins, polycaprolactone resins, polyolefin oxides such as polyethylene glycol and polypropylene glycol, etc. And the like.

The thickness of the adhesive layer or the adhesive layer is 0.1 to 40 μm.
m, preferably 0.3 to 30 μm, and the total thickness of the release material including the support or the thickness of the release material is 0.1 to 0.1 μm.
It is about 200 μm, preferably 0.5 to 100 μm.

Solvents used in the coating method in which the forming components are dispersed or dissolved in a solvent to prepare a coating liquid, and the coating liquid is applied and dried include water, alcohols (eg ethanol and propanol), and cellosolves. (Eg methyl cellosolve, ethyl cellosolve), aromatics (eg toluene, xylene, chlorobenzene), ketones (eg acetone, methyl ethyl ketone), ester solvents (eg ethyl acetate, butyl acetate), ethers (eg tetrahydrofuran, dioxane) ), Chlorine-based solvents (eg chloroform, trichlorethylene), amide-based solvents (eg dimethylformamide, N-methylpyrrolidone),
Dimethyl sulfoxide and the like can be mentioned. Further, a layer can also be formed by melting a forming component with a hot melt and extruding.

The peeling material can be adhered to and adhered to the image forming layer by pressure or heat and pressure. In the pressure or heat pressure treatment, any material can be used without particular limitation as long as the adhesiveness can be improved and the pressure or heat pressure treatment can be performed without inclusion of air bubbles and the like. When heating or pressing a stamper or stamper, a thermal head,
A heat roll, a hot stamp, etc. can be used. When using a pressure roll, the pressure is usually 0.1 to 2
0 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 as a pressure when using a stamper. Is usually 0.05 to 10 kg /
cm ² , preferably 0.5 to 5 kg / cm ² , and the pressing time is usually 0.1 to 50 seconds, preferably 0.5 to 20 seconds. Further, the thermal head can be used as it is under the conditions used for usual melt transfer, sublimation transfer, etc. The heating temperature when using a heat roll is usually 60.
To 200 ° C, preferably 80 to 180 ° C,
The pressure is usually 0.1 to 20 kg / cm, preferably 0.
It is 5 to 10 kg / cm, and the transportation speed is usually 0.
1 to 200 mm / sec, preferably 0.5 to 100 mm /
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 0.05 to 10 kg / cm
² , preferably 0.5 to 5 kg / cm ² , and the heating time is usually 0.1 to 50 seconds, preferably 0.5 to 20 seconds.

When the release material is provided in advance, it is preferable to use a material and a bonding condition that do not substantially change the binding force between the release material and the image forming layer in the imagewise exposure with high-density energy light.

<Image Forming Method> The image forming material is imagewise exposed to high-density energy light to reduce the binding force between the support in the exposed portion and the image forming layer, and separate the release material from the support. An image is formed by transferring the exposed portion of the image forming layer to a release material and leaving the unexposed portion of the image forming layer on the support.

In this method, the exposure direction of light energy is preferably from the side of the support of the image forming material, and furthermore, the image forming layer in the image exposed portion is not destroyed, and the support and the image forming layer are adhered. Image exposure is preferably performed so that only the force is reduced or eliminated, because the image-exposed portion can be uniformly pulled out to the release layer side.

It should be noted that the exposure of the light energy does not destroy the image forming layer in the image exposed portion, and only the bonding force between the support and the image forming layer is reduced or eliminated, or a part of the image forming layer in the image exposed portion. In addition to thermal destruction and scattering, the phenomenon that cracks occur in the image forming layer in the image exposed portion may be used.

The imagewise exposure can be used without particular limitation as long as it is a light source that causes a decrease in the binding force between the support in the exposed area and the image forming layer. Among them, to obtain high resolution,
Electromagnetic wave whose energy application area can be narrowed down, especially wavelength 1
UV to 1 nm to 1 mm, visible light, infrared light is preferable,
Examples of the light source to which such light energy can be applied include a laser, a light emitting diode, a xenon flash lamp, a halogen lamp, a carbon arc lamp, a metal halide lamp, a tungsten lamp, a quartz mercury lamp, and a high pressure mercury lamp. The energy applied at this time depends on the type of exposure sheet, the exposure distance,
By adjusting the time and intensity, it can be selected as appropriate.

When the above energy is collectively exposed,
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 liquid crystal or PLZT, an image signal is used. According to this, it is possible to carry out digital exposure according to the method, and 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 laser light is used as the 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.

The laser light source used in the present invention is generally well known, such as ruby laser and YAG.
Laser, glass laser and other solid lasers; He-N
Gas lasers such as e 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; It is preferable in terms of sensitivity to use a laser in the range from 600 to 1200 nm of visible light to the near infrared region, since light energy can be efficiently converted to heat energy.

After the exposure, the image forming material may be subjected to pressure treatment or heat pressure treatment, if necessary. The above-mentioned method can be used for the pressure or heat pressure treatment.

<Peeling Edge Forming Method> A peeling edge is formed by utilizing the fact that the binding force between the support in the exposed area and the image forming layer is lowered by exposure to high-density energy light. The portion forming the peeling edge may be any non-screen portion of the end portion of the image forming material, but is preferably the front end or the rear end with respect to the conveying direction of the image forming material. If the length of the peeling edge is too long, the loss of the image forming layer is large and it is wasteful, and it tends to cause a jam during transportation. In order to prevent a jam at the time of conveyance when the peeling end is lengthened, it is preferable to provide a peeling end at the rear end and reverse the conveying direction at the time of peeling for peeling. If the peeling edge is too small, peeling becomes difficult. 1 depending on the peeling method
mm-30 mm is preferable.

<Peeling Method> As a peeling method, a method using a suction roller, a method using a peeling claw, or a combination thereof can be considered.

As a method of using the suction rollers, as shown in FIG. 1, the upper and lower suction rollers nip the image forming material on which the image has been formed, and the support and the peeling material are sucked onto the respective suction rollers to peel them. is there. As a method for adsorbing, there are a method using a vacuum roller, a method using an electrostatic adsorption roller, a method using an adhesive roller, and the like.

As a method of using the peeling claw, as shown in FIG. 2, the peeling claw is installed at a portion where the image forming material is discharged from the conveying roller, and the peeling claw is inserted between the support and the peeling material. Peel the release material. Further, as shown in FIG. 3, a suction roller and a peeling claw may be combined. That is, the support may be adsorbed by the adsorbing roller, and the lifted release material may be peeled off by the peeling claw. The support peeled off by the suction roller is peeled off from the suction roller by a peeling claw or released from the suction roller by releasing the suction of the suction roller and the image-formed sheet is discharged. When the sheet is peeled off by the peeling nail, the sheet on which the image is formed can be discharged as it is. The peeling material peeled off by the suction roller may be discarded once the peeling claw or the suction roller releases the suction roller, peeled off from the suction roller, wound on another suction roller, and accumulated at a predetermined number.
Further, it may be wound up one after another on a suction roller for peeling and discarded when a predetermined number of sheets are accumulated. In consideration of the stability of the peeling, it is preferable to take up the sheet on another suction roller and discard it when a certain number of sheets have accumulated. When the peeling material is wound around the suction roller, the adhesive layer or the adhesive layer of the peeling material appears on the surface. Therefore, the next peeling or winding can be performed by utilizing this adhesiveness or adhesiveness.

[0050]

The present invention will be described in detail below with reference to examples, but the embodiments of the present invention are not limited thereto. In the following, "parts" represents "parts by weight as active ingredients" unless otherwise specified.

Example 1 The present invention and a comparative image forming material are shown below.
It was prepared using a support, an image forming layer and a release material.

—Support— A transparent polyethylene terephthalate film having a thickness of 100 μm, which is antistatic-treated on one side and corona discharge-treated on the laminated surface of the image forming layer [T-1, manufactured by Diafoil Hoechst Co., Ltd.].
00G] -Image forming layer-The following compositions are kneaded and dispersed using an open kneader,
An image-forming layer-forming coating liquid containing an inorganic metal compound as a colorant was prepared and applied on a support by extrusion coating, followed by drying and then surface treatment with a calendar, and further at 72 ° C. at 72 ° C. A heat-cured image forming layer having a thickness of 1.3 μm was formed by curing for a time.

Fe—Al based ferromagnetic metal powder 100 parts [Fe: Al atomic number ratio = 100: 4 (whole), Fe: Al atomic number ratio = 50: 50 (surface), average major axis diameter: 0.14 μm , Hc: 1760 oersted, σs: 120 emu / g, BET: 53 m ² / g)] Vinyl chloride resin 10 parts [Nippon Zeon Co., Ltd., MR-105] Polyurethane resin 10 parts [Toyobo Co., Ltd.] , UR-8700] α-alumina [average particle size = 0.15 μm] 8.0 parts Carbon black [average particle size = 0.04 μm] 0.5 part Stearic acid 1.0 part Butyl stearate 1.0 part Poly Isocyanate compound 5.0 parts [Coronate L manufactured by Nippon Polyurethane Industry Co., Ltd.] Cyclohexanone 100 parts Methyl ethyl ketone 100 parts Toluene 100 parts-Release material-Support As a body, a transparent polyethylene terephthalate film having a thickness of 25 μm [S10 manufactured by Diafoil Hoechst Co., Ltd.
0] was used to apply an adhesive layer-forming coating solution having the following composition onto the support, followed by drying to provide an adhesive layer having a thickness of 15.0 μm to prepare a release material. The image forming layer surface and the adhesive layer surface of the release material are faced to each other, and heat and pressure treatment (pressure roll, conveying speed; 30 mm / sec, pressure 3.0 k so that air bubbles do not enter.
(g / cm, temperature 60 ° C.) and adhered to each other to laminate a laminated release material.

Ethylene-vinyl acetate copolymer 3.6 parts [Mitsui-Dupont Polychemical Co., Ltd., Evaflex A714] Toluene 90 parts Cyclohexanone 6.4 parts-Image forming method-Using a semiconductor laser [Sharp Corporation LT090MD,
Main wavelength 830 nm], focusing on the surface of the image forming layer,
Image exposure was performed by scanning exposure from the support side. At this time, as shown in FIG. 4, the peeling end was provided by exposing the entire front end in the conveying direction of the image forming material with a width of 5 mm.

-Peeling Method- The peeling material was peeled off using a peeling device having a mechanism as shown in FIG. 5 using an adhesive roller to form an image on the support.

Comparative Example 1 An image was formed in the same manner as in Example 1 except that the peeling edge was not formed during image formation.

Example 2 An image was formed in the same manner as in Example 1, except that a peeling edge of 0.5 mm was formed during image formation.

Example 3 An image was formed in the same manner as in Example 1 except that a 40 mm peeling edge was formed during image formation.

Example 4 An image was formed in the same manner as in Example 1 except that the peeling method was carried out by using a peeling device having a mechanism as shown in FIG. 6 using a peeling claw.

Comparative Example 2 An image was formed in the same manner as in Comparative Example 1, except that the peeling method was carried out by using a peeling device having a mechanism as shown in FIG. 6 using a peeling claw.

Example 5 An image was formed in the same manner as in Example 1 except that a peeling edge of 25 mm was formed during image formation.

Example 6 In Example 1, a peeling edge of 25 mm was formed on the rear end of the first conveying direction of the image forming material by full exposure during image exposure as shown in FIG. 7, and as shown in FIG. Image formation was performed in the same manner as in Example 1 except that the peeling device having a mechanism for performing reverse peeling from the rear end to perform peeling was used for peeling.

In the above Examples and Comparative Examples, the following items were evaluated.

<Peelability> Twenty exposed image-forming materials were conveyed and peeled by a peeling device, and the number of sheets that could be peeled without any problems at that time was counted.

<Conveyability> Twenty exposed image-forming materials were conveyed and peeled by a peeling device, and at that time, the number of sheets that could be conveyed without any problems without causing jams or wrinkles of the peeling material was counted.

The results are shown below.

Peelability Transportability Peelability Transportability Example 1 20 19 Comparative Example 1 20 20 Example 2 16 20 Comparative Example 2 1 19 Example 3 20 15 Example 4 20 19 Example 5 20 17 Example 6 20 19

[0068]

According to the present invention, the release material can be easily released.

[Brief description of the drawings]

FIG. 1 is a diagram showing a peeling method using a suction roller.

FIG. 2 is a diagram showing a peeling method using a peeling claw.

FIG. 3 is a diagram showing a peeling method in which a suction roller and a peeling claw are combined.

FIG. 4 is a view showing a state in which a peeling end is provided.

FIG. 5 is a view showing a mechanism of a peeling device used in the examples.

FIG. 6 is a view showing the mechanism of another peeling device used in the examples.

FIG. 7 is a diagram showing a state in which a peeling end is provided in another mode.

FIG. 8 is a diagram showing a method of peeling at the peeling end according to the embodiment of FIG.

[Explanation of symbols]

 1 Support 2 Separation Material 3 Adsorption Roller 4 Conveying Roller 5 Separation Claw 6 Separation Edge 7 Adhesive Roller 8 Winding Roller 9 Nip Roller 10 Image Forming Material 11 Conveyance Guide

Claims (6)

[Claims] 1. An image forming material having an image forming layer and a release material on a support in this order, and imagewise exposed to high-density energy light to bond the support to the image forming layer in the exposed area. A method of forming an image by reducing the force and peeling off a release material, wherein an peeling edge is provided outside the image region by exposure. 2. An image-forming material having an image-forming layer on a support is used to imagewise expose high-density energy light to reduce the binding force between the support and the image-forming layer in the exposed area. In the method of forming an image by peeling off the release material after adhering the adhesive layer or the pressure sensitive adhesive layer of the release material having the adhesive layer or the pressure sensitive adhesive layer on the other support to the image forming layer side, exposing to the outside of the image area An image forming method characterized in that a peeling edge is provided by the method. 3. The image forming method according to claim 1, wherein the image-wise exposure with high-density energy light does not substantially change the bonding force between the release material and the image forming layer. 4. The image forming method according to claim 1, 2 or 3, wherein a peeling end is provided on at least one end of the image forming material. 5. The image forming method according to claim 1, wherein the peeling material is peeled off from the peeled end provided by exposure using an adhesive roll. 6. The peeling material is peeled off from the peeled end provided by exposure using a peeling claw.
The image forming method described in 2, 3, or 4.