JPH023059A - Colored image forming material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a colored image forming material used for color proofing for color proofing in color printing. The present invention also relates to a colored image-forming material with improved sliding properties between the colored image-forming materials during handling.

[Prior art] Color sheets for color proofing (
It is well known in the art that color proofs are used.

As a method for creating a multicolor transfer image using a colored image forming material for color proofing, for example, Japanese Patent Application Laid-Open No. 47-4183
The so-called direct transfer method described in Publication No. 0, in which a colored image is directly transferred and laminated onto the final receiver paper, for example, JP-A-59-97
No. 140 discloses a so-called indirect transfer method in which a colored image is temporarily transferred and laminated onto a temporary image-receiving sheet and then transferred again onto a final image-receiving set, and JP-A-56-5
Examples include the method described in Japanese Patent No. 01217, in which the process of transferring a colored photosensitive layer to image-receiving paper and then repeating the process of forming an image is repeated.

[Problems to be Solved by the Invention] Among the above-mentioned multicolor transfer image forming methods, Japanese Patent Laid-Open No. 56-5
In the method described in Japanese Patent Publication No. 01217, etc., in which the process of forming an image is repeated after transferring a colored photosensitive layer to an image-receiving paper, for example, a colored image is formed by laminating a colored photosensitive layer and adhesive 1 in this order on a support. After the adhesive layer side of the forming material is adhered to a usually white image-receiving paper under pressure or pressure and heat, a color separation net positive (or negative) film is overlaid on the usually transparent support side, and this is Place it between a glass plate and a rubber sheet in an exposure machine with a vacuum printing frame, create a vacuum between the glass plate and the rubber sheet, and bring the color separation net film into close contact with the transparent support surface of the colored image forming material. (Hereinafter, this method will be referred to as a vacuum contact method.) After this four-color image forming material is exposed to light, the transparent support is peeled off. Further, development processing is performed to form both @a images on white image receiving paper 'r-. Usually, by repeating the above operations for the four colors cyan, magenta, yellow, and black, a multicolor image can be obtained on white paper. However, in the above process, especially when the color separation net film is brought into close contact with the transparent support surface of the colored image forming material adhered on the receiver, the surface of the transparent support is smooth. For,
In addition, since air is sucked from the 372 periphery and adhesion is gradually achieved from the periphery, it takes a relatively long time to completely adhere the color separation mesh film to the entire surface of the colored image forming material. , which was a factor in reducing work efficiency. Moreover, if image exposure is performed while the adhesion is incomplete, fine points become thinner or thicker (so-called printing blur) in the areas where the adhesion is incomplete, giving undesirable results.

In addition, since the transparent support surface of the colored image-forming material is smooth as described above, when the colored image-forming materials are stacked,
There were also problems in that the colored image-forming materials adhered to each other, resulting in poor slipperiness and difficulty in handling.

In view of the above problems, the present invention forms a colored image by laminating at least a colored photosensitive layer and an adhesive layer in this order on a support, and after adhering the adhesive layer to an image-receiving paper, the image forming process is repeated. In terms of materials, the time required for vacuum adhesion between the color separation mesh film and the transparent support surface of the colored image forming material is shortened, the image reproducibility is improved by preventing the occurrence of burnt blur in areas with poor adhesion, and the color image forming materials are bonded together. The main purpose is to improve the slipperiness of

[Means for Solving the Problems] The above object is to provide a colored image forming material comprising a colored photosensitive layer containing a photosensitive composition and a colorant, and an adhesive layer laminated in this order on at least a support. This is achieved by providing a colored image-forming material characterized in that it has a solid powder fixed to the surface of the support opposite to the colored photosensitive layer.

The present invention will be explained in further detail below.

The colored image-forming material of the present invention comprises at least on a support,
It consists of a colored photosensitive layer containing a photosensitive composition and a colorant, and an adhesive layer, which are laminated in this order, and are usually adhered to a white image-receiving paper by the adhesive layer under pressure or under pressure and heat conditions. After that, a colored image is formed on the image-receiving paper by imagewise exposure, step 15 and development processing.

In this case, in order to facilitate peeling of the support after imagewise exposure, a release layer is usually provided on the support, or a release layer is usually provided on the support surface, or a release layer is applied to the surface of the support with a release treatment using an appropriate oil-repellent substance. A type 1 treatment layer can be provided.

Mold release place I! T! As the oil-repellent material for the layer, for example, silicone resin, fluororesin, fluorosurfactant, polyolefin, polyamide, etc. can be used.

Since polypropylene films, polyethylene films, and the like do not exhibit good mold releasability even without special template treatment, a particularly preferred embodiment includes providing a polypropylene layer or a polyethylene layer thinner than the thickness of the support.

The method for forming a polypropylene layer or polyethylene layer on a support is as follows: 1) A solution of polyvinyl acetate, polyvinyl chloride, epoxy resin, polyurethane resin, natural rubber, synthetic rubber, etc. dissolved in a solvent is used as an adhesive. This is the so-called dry lamination method, in which these adhesives are applied onto a support, dried by hot air or heating, and then a polypropylene film or polyethylene film is layered and laminated by pressure bonding under heat.

2) Use ethylene and vinyl acetate, copolymers of ethylene and acrylic acid ester, polyamide resin, petroleum resin, rosin, waxes, or mixtures thereof as adhesives, and heat these adhesives while keeping them in a molten state. , Immediately after coating on the support by the doctor blade method, roll-to-one method, gravure method, reverse roll method, etc.
The so-called hot-melt lamination method involves laminating polypropylene or polyethylene films together by heating them to a high temperature if necessary and then cooling them.

3) The so-called extrusion lamination method, in which polypropylene or polyethylene is kept in a molten state and extruded into a film by an extruder, and while this is in the molten state, a support is crimped and laminated.

4) When forming a film to serve as a support by melt extrusion, multiple extruders are used to form a polypropylene layer or a polyethylene layer on the support film by molding two times with polypropylene or polyethylene in a molten state. The so-called coextrusion method. etc.

Examples of the release layer include alcohol-soluble polyamide, alcohol-soluble nylon, a blend of a partially esterified resin of a copolymer of methionone and maleic anhydride, and methoxymethylated nylon, polyvinyl acetate, polyacrylate ( -, copolymer of polymethyl methacrylate-1- and acrylate-1-, polyvinyl chloride, copolymer of vinyl chloride and vinyl acetate, polyvinyl butylade, cellulose acetate phthalate, methylcellulose, ethylcellulose, cellulose diacetate , cellulose triacetate,
Polyvinyl alcohol, butyl cellulose, hydroxyethyl cellulose acetate, cellulose triacetate, cellulose acetate butyrate, hydroxypropyl methyl cellulose phthalate, hydroxypropyl methyl cellulose hexahydrophthalate, or mixtures thereof may be used.

The thickness of the release layer is suitably in the range of 0.01 .mu.II to 30 .mu.m, particularly preferably in the range of 0.1 .mu.l to 5 .mu.m.

As the transparent support used in the colored image forming material of the present invention, a polyester film, particularly a biaxially stretched polyethylene terephthalate film is preferable from the viewpoint of dimensional stability against water and heat, but acetate film, polyvinyl chloride film, Polystyrene film, boria pyrene film, polyethylene film may also be used.

The colored photosensitive layer in the present invention is one in which exposed or unexposed areas are removed image-wise by development following imagewise exposure to form a colored image.

Various photosensitive compositions can be used as the photosensitive composition contained in the colored photosensitive layer, but when irradiated with actinic rays, its molecular structure undergoes a chemical change in a short period of time, and it becomes difficult to dissolve in the solvent. Included are all compounds such as monomer prepolymers and polymers whose properties change and whose exposed or unexposed portions are dissolved and removed when certain solvents are applied. Examples of photosensitive compositions that can be used include photocrosslinkable compositions, such as those made by esterifying polyvinyl alcohol with cinnamic acid, which are so-called negative-positive type compositions that have reduced solubility in exposed areas. There are photosensitive resin systems, systems in which diazonium salts and their condensates are mixed with polyvinyl alcohol, polyvinylpyrrolidone, polyacrylamide, etc., and systems in which aromatic azide compounds are used as photocrosslinking agents and mixed with binders such as cyclized rubber. Also, photosensitive resins using radical photopolymerization or photoionic polymerization can also be used. In addition, examples of so-called positive-positive types that increase solubility in exposed areas include:
There are photosensitive resin compositions containing 0-quinonediazide as a photosensitive substance, specifically, 1.

2-benzoquinonediazide-4-sulfonyl chloride, 1,2-naphthoquinonediazide-4-manifonyl chloride, 1,2-naphthoquinonediazide-5-sulfonyl chloride, 1,2-naphthoquinonediazide-6-sulfonyl chloride and hydroxyl group and/or Alternatively, a compound obtained by condensing an amine group-containing compound is preferably used.

Examples of the water B group-containing compound include trihydroxybenzophenone, dihydroxyanthraquinone, bisphenol A1 phenol novolac resin, resorcinol benzaldehyde condensation resin, and pyrogallol acetone condensation resin. In addition, examples of amine group-containing compounds include -
Examples include aniline, p-aminodiphenylamine, p-aminobenzophenone, 4.4'-diaminodiphenylamine, and 4.4-diaminobenzophenone.

Regarding the above-mentioned 0-quinonediazide compound, J
, written by KO8AR
iveSystem” (Wiley&5ons
, New York, 1965) and Inui Nagamatsu, “Photosensitive Polymers” (Kodansha).

(1977).

Roughly positive-positive type compounds: I) Compounds that can generate an acid upon irradiation with actinic rays, ii) Compounds that have at least one bond that can be decomposed by an acid, and 1.
It is also possible to use photosensitive resin compositions containing ii) novolac resins containing two or three different phenols.

The appropriate content of the photosensitive composition in the colored photosensitive layer used in the present invention is, for example, 5 to 80% by weight.

Further, the colored photosensitive layer generally contains a binder, and such a binder is a polymer compound that is film-forming and solvent-soluble, and preferably dissolves or swells in an alkaline image solution. is used.

Specific examples of such polymer compounds include the following -
Examples include polymeric compounds that contain a structural unit having an aromatic hydroxyl group, which is represented by the term "Fukudai [Ding]", in its molecular structure.

Here, R1 and R2 are a hydrogen atom, an alkyl group, or a carboxylic acid group, R3 is a hydrogen atom, a halogen atom, or an alkyl group, R4 is a hydrogen atom, an alkyl group, a phenyl group, or an aralkyl group, and X is a nitrogen atom and an aromatic carbon Connect with atoms 2
It is a valent R group, the opening is O or 1, and Y is a phenylene group which may have a substituent or a naphthylene group which may have a substituent.

Specific examples of monomers forming the structural unit represented by the above-mentioned - clothing [I] include N-(4-hydroxyphenyl)-(meth)acrylamide, N-(2-hydroxyphenyl)-(meth) Acrylamide, N-(4
-Hydroxynaphthyl)-(meth)acrylamide monomer such as methane acrylamide: o-lm- or p-hydroxyphenyl (meth)acrylate monomer;
Examples include 0-lm- or p-hydroxystyrene monomers. Preferably, 0-lm- or p-hydroxyphenyl (meth)acrylate monomer, N-(4-hydroxyphenyl)-(meth)acrylamide monomer, more preferably N-(4-hydroxyphenyl)-(meth) It is an acrylamide monomer.

Book! In the present invention, it is preferable to use a copolymer of a monomer forming the structure represented by the general formula [I] and the following monomers as the binder.

Acrylonitrile: CH,=C[N S alkyl acrylate C-O R' R% Here, R5 represents a hydrogen atom, an alkyl group, or a halogen atom, and R6 represents an alkyl group, a phenyl group, or a naphthyl group. Mouse.

The proportion of the group having an aromatic hydroxyl group represented by the general formula [I] in the copolymer is preferably 1 to 30 mol%.

The proportion of units formed from the acrylonitriles in the copolymer is preferably 0 to 50 mol%, and more preferably 5 to 40 mol% in consideration of developability. The proportion of the structural units formed from the above-mentioned alkyl acrylates is preferably 50 to 95 mol% from the viewpoint of developability with a low alkaline aqueous solution;
0 to 95 mol% gives the most suitable developability.

In addition to the above-mentioned U4 structural unit, the above-mentioned acrylic acids such as acrylic acid or methacrylic acid may be copolymerized with the above-mentioned U4 structural unit in the polymer compound. Considering the development latitude, the proportion in the molecular compound is preferably 0 to 20 mol%, and 0 to 1% by mole.
0 mole % is most preferred.

The weight average molecular weight of such a polymer compound is preferably from 1000 to 100,000, more preferably from 1000 to 30,000, from the viewpoint of developability or resolution when a low alkaline aqueous solution is used as a developer. range is preferred. These polymer compounds can be synthesized by a well-known copolymerization method.

Specific examples of such polymer compounds include copolymers having the following structure.

CH.

1:m:n=(1-25):(5-40):(50-9
5) In the present invention, a novolak resin obtained by polycondensation of at least one type of phenol and an active carbonyl compound is also used as a binder.

These phenols include all compounds in which at least one hydrogen atom bonded to an aromatic ring is substituted with a hydroxyl group, and specifically includes phenol, 0-cresol, m-cresol, p-cresol, 3-cresol, etc. .5-xylenol, 2.4-xylenol, 2゜5-xylenol,
Examples thereof include carvacrol quinone, bi-ogallol, phloroglucin, and phenol substituted with an alkyl group (1 to 8 carbon atoms).

Active carbonyl compounds include, for example, aldehydes and ketones, and specific examples include formaldehyde, acetaldehyde, benzaldehyde, acrolein, furfural, and acetone.

Examples of polycondensation resins include phenol formaldehyde novolak resin, m-cresol formaldehyde novolak resin, phenol/m-cresol/formaldehyde copolycondensate resin, phenol/p-cresol/formaldehyde copolycondensate resin, l-cresol/p- Cresol/formaldehyde copolycondensate resin, 0-cresol/p-cresol/formaldehyde copolycondensate resin, phenol/O-cresol/m-cresol/
Examples include formaldehyde copolycondensate resin, phenol/0-cresol/p-cresol/formaldehyde copolycondensate resin, and phenol/m-cresol/p-cresol/formaldehyde copolycondensate resin.

A preferred novolac resin is a phenol formaldehyde novolac resin, and the molecular weight is a weight average molecular ff1M.
w is 3500~500, number average molecule IMn is 1000~
A range of 200 is preferred.

The molecular weight of the resin is measured by GPC (gel permeation chromatography).

Calculation of the number average molecule fiMn and the weight average molecule mMW is based on Morio Takushoku, Tatsuya Miyabayashi, Masayuki Naka, "Journal of the Chemical Society of Japan"
It shall be carried out by the method described on pages 800 to 805 (1972), in which the peaks of the oligomer region are equalized and the centers of the peaks and valleys are connected.

In addition, in the novolac resin, pyrolysis gas chromatography (PGC) is used as a method for confirming the northernmost of different phenols used in the synthesis thereof.

Regarding pyrolysis gas chromatography, its principles,
The equipment and experimental conditions are, for example, published by Takushoku, edited by the Chemical Society of Japan.
Novel Experimental Course Volume 19 by VT, Polymer Chemistry [I], tz
The method for qualitative analysis of novolac resins using pyrolysis gas chromatography is described in pages 4 to 485 (published by Maruzen 1918), etc., in Morio Takushoku, Takashi Yamanaka, and Masayuki Tanaka, “Analytical Chemistry” Volume 18, pp. 47-52 (1969)
The method described in .

Further, other polymeric compounds that can be used as a binder in the present invention include sulfoalkyl esters of (meth)acrylic acid (co)polymers, vinyl acetal (co)polymers, vinyl ether (co)polymers, and acrylamide. Also included are (co)polymers, styrene (co)polymers, cellulose derivatives, and the like.

In the present invention, a coloring agent is added to the colored photosensitive layer, and such M coloring agents include dyes and pigments. In particular, when used for color proofing, pigments and dyes with a tone matching the usual colors required for that purpose, such as yellow, magenta, cyan, and black, are required, as well as metal powders, white pigments, and fluorescent pigments. etc. are also used. Below are some examples of various pigments and dyes known in the art.

(0,1 means color index).

Victoria Pure Blue (C, r 42595) Auramine (C0I 41000) Cathylone Brilliant Flavin (C, I Basic 13) Rhodamine 6GCP (C, + 45160') Rhodamine B (C, I 45170) Safranin 0K7
0: ioo (c, [50240) Erioglaucine X (C, I 42080) Fast Black H
B (C,! 26150) N 0.1201 Lionol Yellow (C, + 21090 > Lionol Yellow GRO (C,! 21090) Shimla Fast Yellow 8GF (C, I 21105) Benzidine Yellow 4 T-5640 (C, I 210
95) Shimla Fast Red 4015 (C, +
12355) Lionor Red 784401 (C
, + 15830 > First Gen Blue TGR-L
(C, +74160) Lionor Blue SM (
C, 126150) Mitsubishi Carbon Black M A-1
00 Mitsubishi Carbon Black #30. #40. #50
The content of the colorant in the colored photosensitive layer used in the present invention is suitably, for example, 5% to 50% by weight.

The ratio of colorant/binder in the colored photosensitive layer used in the present invention can be determined by a method known to those skilled in the art, taking into consideration the target optical density and the removability of the colored photosensitive layer with respect to a developer. For example, in the case of dyes, the content is 5% to 75% by weight, and in the case of pigments, the content is 5% to 75% by weight.
90% is appropriate.

Further, the thickness of the colored photosensitive layer can be determined by a method known to those skilled in the art based on the target optical density, the type of colorant used in the colored photosensitive layer (dye, Kao 13+, carbon black), and its content. However, within the allowable range, the thinner the colored photosensitive layer is, the higher the resolution will be, and the better the image quality will be. Therefore, the film thickness is 0.1
(It is usually used in the range of 1/11' to 5Q/l'.

In addition to the above-mentioned materials, a plasticizer, a coating property improver, etc. may be added to the colored photosensitive layer, if necessary.

Examples of plasticizers include various low-molecular compounds such as phthalate esters, trinoenylbosphaes 1 to 1 and maleate esters, and coating properties improvers include fluorine-based surfactants, ethyl cellulose polyalkylene ether, etc. Surfactants such as representative nonionic surfactants can be mentioned.

Further, the colored photosensitive layer can be divided into two layers: a coloring agent layer made of a colorant and a binder, and a photosensitive layer made of a photosensitive composition and a binder. In this case, it does not matter which layer is present on the support side.

Further, in the present invention, an adhesive layer is laminated on the colored photosensitive layer. The adhesive layer used in the present invention is transparent,
And, it is preferable that it is non-adhesive at room temperature, but at 80℃~
A material that can be heat-sealed within a temperature range of 160° C. is more preferable.

For this purpose, the following film-forming thermoplastic resins having a softening point of 70°C to 140°C are used. For example, olefin (co)polymers, vinyl chloride (co)polymers, nylidene chloride (co)polymers, vinyl acetate (co)polymers, (meth)acrylic acid ester (co)polymers, styrene/(meth) ) Acrylic ester copolymer, polyester, nyl butyral resin, chlorinated rubber, cellulose derivative, styrene/butadiene copolymer, aliphatic petroleum resin, aromatic petroleum resin, alicyclic petroleum resin, rosin resin , terpene resin, coumaron resin, etc., and these may be used alone or in combination, and may also be used in combination with other resins or plasticizers.

The thickness of the adhesive layer is suitably in the range of 1 to 20 μm, particularly preferably in the range of 2 to 10 μm.

The solid powder to be fixed to the surface of the support of the colored image-forming material of the present invention opposite to the colored photosensitive layer (hereinafter referred to as [the back surface of the colored image-forming material]) may be powdered on the back surface of the colored image-forming material ( Powdering refers to scattering solid powder onto the back side of a colored image forming material by mechanical means without using a dispersion medium other than air or other gas to make it resistant to adhesion.)
(Hereafter referred to as heat fusion)
There are things that can be done. Solid powder suitable for heat fusion is
For example, a solid powder consisting essentially of a substance or composition having a first or second order transition temperature lower than the first order transition temperature of the support, or a surface layer consisting essentially of said substance or said composition. Preferably, the first transition point and the second transition point of the substance or the composition are higher than 40°C, and the first transition point of the substance or the composition is higher than 40°C.
The next or second order transition point is lower than the first order transition point of the support.

Preferred specific examples include those suitable for heat fusion:
Polyvinyl acetate, polyvinylidene chloride, polyethylene oxide, polyethylene glycol, polyacrylic acid, polyacrylamide, polyacrylic ester,
Examples thereof include polystyrene, polystyrene derivatives, copolymers of these heptamers, polyvinyl methyl ether, epoxy resins, phenol resins, polyamides, polyvinyl butyral, and the like.

In addition, matting agents that are widely known as matting agents that are generally used to roughen the surface of objects (for example, silica, zinc oxide, titanium oxide, zirconium oxide, alumina, polymethyl methacrylate, polystyrene, phenolic resin, etc.) It is also possible to use a material in which the surface of a fine solid powder is wrapped in the above solid powder material.

The shape of the solid powder used in the present invention is not particularly limited, but a spherical powder, an amorphous powder obtained by pulverizing a solid powder material using a ball mill, a jet mill, etc. can be used. The diameter of solid powder particles is approximately 0.5-40μm
A range of 1 to 17 μm is appropriate, and a range of 1 to 17 μm is preferable.
Particularly preferred is a range of 1 to 8 μm. If the particle size of the solid powder is too small, the effect of shortening the vacuum contact time will be small, while if it is too large, the reproducibility of small halftone dots may deteriorate. Within the above range, vacuum adhesion is particularly good even if the amount of solid powder adhering is relatively small, and the reproducibility of small halftone dots is hardly affected. Note that generally known classification methods may be used to align the particle size of the solid powder within the above range.

In the present invention, in order to make the solid powder stick to the back side of the colored image forming material, the solid powder is powdered on the back side of the colored image forming material, and the solid powder that is powdered and firmly attached is applied to the back side by heat or the like. Make it stick.

The powdering may be performed using a known method, for example, J.J.

Sokol, R.C., Hendrickson, Plastics Engineering Handbook, p. 426 p. 431 (
1976) (J, J, 5okol and
R, CHendrickson P Iastic
E 110.8 andbook (197G)')
The fluidized bed (FIuidi) described in
zed bed) In addition to electrostatic spray, electrostatic fluidized bed, etc., methods using air spray, brush, puff, etc. may be used. The amount of solid powder to be fixed is 1 mII.
+2 to solid powder 1 to -1,000@ is appropriate, and 5
~500 pieces is preferable. Powdered and deposited solid powders are generally randomly distributed.

The following method may be used to fix the powdered solid powder.

That is, by blowing heated air onto the powdered material, or by passing the powdered colored imaging material through a heated air chamber or between heated rolls to melt and fix the surface of the solid powder. . When using this method, it is preferable that the first or second transition point of the solid powder is about 10 to 40° C. lower than the first transition point of the support.

These methods are usually used alone, but two or more methods may be used in combination, and means for applying pressure to the solid powder using rolls or the like may be used in combination. In addition to the above methods, there are various methods of fixing solid powder, but
In short, any method may be used as long as the solid powder and the colored photosensitive layer or support are fixed to the extent that they are not significantly deformed.

In the present invention, "fixed" means that the solid powder that is powdered and adhered to the back side of the colored image forming material in the process before development processing does not easily fall off due to the original shaking in the normal operating process. In particular, when a foreign substance that is not fH adheres to the back side of the colored image forming material 11, the solid powder is fixed to such an extent that the solid powder will not be removed together with the foreign substance by wiping the back side with a cloth or the like. It means that

In addition, the color of the fixed solid powder does not need to be the same as the amount of gold powdered and adhered to the back surface of the colored image forming material, and even if some of it falls off, it is still substantially vacuum-adhesive. It is sufficient if the adhesive is bonded to the extent that it is improved. However, it is desirable that the falling of a portion of the solid powder be as small as possible, as the falling solid powder may contaminate the working environment and cause undesirable effects. It is most preferable that the particles are fixed in a normal process.

The colored image-forming material of the present invention is usually attached to a transparent support of the colored image-forming material on a paper, which is usually white, through an adhesive layer under pressure or pressure and heat conditions. A color separation mesh positive (or negative) film is adhered to the surface by a vacuum adhesion method, and after imagewise exposure and peeling off the support 121, Sakai image processing is performed to form a colored image on the image receiving paper.

As the image-receiving paper, after adhering the colored image forming material,
Since it is necessary to perform a development process, it is preferable to use water-resistant (solvent-resistant) white synthetic paper, but metal, plastic films, etc. may also be used.

Also, development 9! on a colored image-forming material that has been exposed to L2 imagewise light.
! As the developer used when applying embedding and forming a colored image, 1. An alkaline carrier solution containing water as the main solvent is used, and the alkaline agents used in the developer include sodium carbonate, sodium hydrogen carbonate, sodium silicate, potassium silicate, sodium hydroxide,
Potassium hydroxide, lithium hydroxide, monolithium triphosphate, monolithium dibasic phosphate, potassium triphosphate,
Inorganic alkaline agents such as potassium diphosphate, ammonium triphosphate, ammonium diphosphate, surium metasilicate, thorium bicarbonate, potassium Pa, ammonium carbonate, and ammonium silicate; Organic alkaline agents such as t1-reethanolamine and tetraalkylammonia hydroxide are used.

The content of alkaline agent in the developer composition is 0.
It is suitable to use it in the range of 0.05 to 30% by weight. The alkaline development fj is ethylene glycol mono-71
Paid solvents such as , nyl ether, benzyl alcohol, n-propyl alcohol, surfactants, nitrite, ED
It may also contain a chelating agent such as TA, a foaming agent such as an organic silane compound, and the like.

[Examples] Although the present invention will be described above with reference to Examples, the present invention is not limited to these.

(Examples 1 to 4. Comparative Examples 1 to 5) The following was applied on the polypropylene surface of a support in which a 25 μm thick polypropylene film was laminated by a dry lamination method on a 50 μm thick polyethylene terephthalate film. A blue photosensitive layer Wi solution having the composition was applied using a wire bar so that the dry film Jg was 1 μm, and dried.

(Colored photosensitive layer molecule 11.Liquid composition) 2.:3.4-1-Lyhydroxypenzophenone naphthoquinone-1,2-diazide sulfonic acid ester 0.616 (]Phenol formaldehyde novolac resin (heavy average molecule 5: 960, number average molecular ω: 496) 4.3
84 g Pigment below Ethyl cellosolve 39.6 (Fluorine surfactant 0.259 (3M FC-430) (Pigment) Black carbon black MA-100 (Mitsubishi Kasei) 0.99Q cyan Nidiane blue 4920 (manufactured by Dainichiseika) O, SS Limagenta = 1
? Squid First Carmine 1483 (manufactured by Dainichiseika) 0.68g Yellow: Seikaf? -St Yellow H-7055 (manufactured by Dainichiseika) 0.680 Next, an adhesive layer coating solution having the following composition was applied onto the colored photosensitive layer using a wire bar so that the dry Ill thickness was 5 μm, and dried.
Four colored image forming materials were prepared.

(Adhesive layer coating liquid composition) Alicyclic saturated hydrocarbon resin Alcon P-90 (Saiyo Kagaku Co., Ltd., softening point 90°C) 12Q alicyclic saturated hydrocarbon resin Alcon P-100 (Saiyo Kagaku Co., Ltd., softening point 100 °C) 39 Styrene-butadiene block copolymer Tuffrene A (Asahi Kasei Kogyo 24) 5a Toluene 100d or more was placed on the back side (polyethylene terephthalate surface) of the four-color colored image forming material obtained by pulverizing with a ball mill and passing through a classifier. Examples 1 to 4 were prepared by powdering the solid powder of the resin shown in Table 1 classified with a zigzag classifier manufactured by Albime Co., Ltd. using a spray gun, and exposing it to an air bath at 150°C for 5 seconds to make it stick. I did it. Column 1 of Table 1 shows the time required to achieve close contact using the vacuum contact method using each of the obtained colored image forming material samples, and after wiping the back side of the sample with a cotton glove, the same vacuum contact method The time required to achieve better adhesion is shown in column (■) of Table 1. In addition, using a sample (comparative sample) prepared in the same manner as the sample in column ``■'' of Table 1 except that the adhesion process was omitted, the back side of the comparison sample was wiped in the same manner as in column ``■'' of Table 1, and then vacuum bonded. The results of measuring the time required for this are shown in columns 2 for Comparative Examples 1 to 4 in Table 1. (For the following examples, the meanings of columns ① and ⋯ are the same as in Example 1 and Comparative Example 1).

In addition, Comparative Example 5 was conducted without any processing to improve vacuum adhesion such as powdering, and the measurement results for the obtained sample are shown in the bottom row of Table 1.

The following method was used for the contact baking. That is, a photographic film (500x70h+m) with a 20% halftone image made with Konica 01-+ooE film.
and a sample (800 x 1003+tm) were brought into close contact under vacuum using a horizontal vacuum baking frame KD-Pi type smoking frame manufactured by Kamo Electric Laboratory.

Table 1 shows that by using the colored image forming material of the present invention, the vacuum adhesion time is shortened to about 172 to 176, and the solid powder is It turns out that it is difficult to fall off.

Next, among the colored image forming materials of each color created as described above, the adhesive layer surface of the colored image forming material using a pigment with a tone matching cyan and a water-resistant white synthetic paper (Peach Coat WEK manufactured by Nisshinbo Co., Ltd. 110) and passed between a pair of nip rolls heated to 90° C. at a speed of 50 cm/min under a pressure of 5 kO/Cf, and 1 g of cyan colored image forming material was passed through a layer. Glued onto white synthetic paper.

Next, a color separation mesh positive film corresponding to cyan is superimposed on the support surface of a colored image forming material using a pigment of a tone matching that of cyan, which is adhered onto white synthetic paper, and the film is adhered by a vacuum adhesion method. Image exposure was performed for 20 seconds from a distance of 50 cm using a 4KW metal halide lamp, and then, after peeling off the support from the cyan colored image forming material after image exposure, development was performed by immersing it in the following developer for 30 seconds, A cyan colored measurement was formed on white synthetic paper.

(Developer) Sodium carbonate 15g Surfactant (Perex NBL manufactured by Kao Atlas > 50g Distilled water
1noo fJ continues,
After adhering a colored image forming material using a pigment with a tone matching that of magenta onto white synthetic paper on which a cyan colored image has been formed, through an adhesive layer, perform the same operation 3 as above to create a magenta image. Forms a colored image in yellow, yellow,
The same operation was repeated for black to form 3 color proofing images consisting of 4 colors on white synthetic paper.

The color blue ink images formed with the colored image forming materials of Examples 1 to 4 were very clear, with no local thinning or thickening of halftone dots due to poor vacuum adhesion, and the image quality was excellent. Although the image quality was very similar to that of ordinary offset printed matter, it was formed using the colored image forming material Fl of Comparative Examples 1 to 5 (which does not have solid powder fixed to the back side of the W color image forming material). The resulting color proofing image had local thinning of halftone dots (burning blur) in areas where there was poor adhesion to the color separation halftone positive film, and it lacked clarity and was very unsightly. In addition, the colored image forming materials of Examples 1 to 4 had good slip properties for each sheet, and did not cause any trouble in handling during the normal process of creating color proofing images, but Comparative Examples 1 to 5 In the colored image forming material, when the sheets were stacked, the sheets stuck together and had poor sliding properties, making handling difficult.

<Examples 5 to 8. Comparative Examples 6 to 10> A release layer coating solution having the following composition was coated onto a 75 μm thick biaxially stretched polyethylene terephthalate film using a wire bar to a dry film thickness of 0.5 μm and dried.

(Release layer coating liquid composition) Hydroxypropyl methyl cellulose phthalate (Shin-Etsu Chemical HP-55) 5 g Methyl cellosolve 100 g Next, a colored photosensitive layer dispersion having the following composition was separated using a wire bar so that the dry film thickness was 1 μm. It was applied onto the mold layer and dried.

12 g of an alkali-soluble polymer composition (weight average molecular weight 17,000°, 50% methyl cellosolve solution) having the following composition (1:m:n=10:10:80)pentaerythritol tetraacrylate Michler's ketone benzophenon paramethoxyphenol methyl Cellosolve 4.3 g 0.04 (1 0.25 g 0.OIg 4 g Fluorine surfactant (manufactured by 3M, FC-430) 0.1
(1 Pigment below (pigment) Black 2 Carbon Black MΔ-100 (manufactured by Mitsubishi Kasei) 1.98 (1 Cyan
Nidianin Blue 4920 (manufactured by Dainichiseika Chemicals) 1.10g Magenta: Seiryoku Fast Carmine 1483 (manufactured by Dainichiseika Chemicals > 1.36!) Yellow:
Seikafirth 1~Yellow@-7055 (manufactured by Dainichiseika) 1.3sgThe alkali-soluble polymer composition was synthesized by the following method.

Weighed 8.85 Q of hydroxyphenylmethacrylamide, 2.65 g of acrylonitrile, 33.11 l of methyl acrylate, and 1.64 Q of azobisisobutyronitrile (polymerization initiator) in 1 quart flask.
;1 of ethyl alcohol was used as a solvent, and the reaction was carried out at 77° C. for 6 hours. After this, add methyl cellosolve to 75 o ty.
+: E1 reaction was stopped and ethyl alcohol was distilled off at 60°C for 3 hours. As a result, the polymer composition
Approximately 95 g of 0% methyl cellosolve solution was obtained.

Next, on the colored photosensitive layer of each color, an adhesive layer coating solution having the following composition was applied so as to have a dry film thickness of 7 μm, and dried to form colored image forming materials of four colors.

(Adhesive layer coating liquid) Alicyclic saturated hydrocarbon resin Alcon 12 j7P
-90 (Saiyou Kagaku, softening point 90°C) Alicyclic saturated hydrocarbon resin Alcon 3gp-100 (Saiyou Kagaku, Softening point 90°C)
Softening point: 100℃) Styrene-butadiene block
54 copolymer Toughblen A (manufactured by Asahi Kasei Kogyo) toluene 50d methyl ethyl ketone 501i (on the back side of the four-color colored image forming material obtained above and on the polyethylene terephthalate film) was crushed and classified in the same manner as in Example-1. The resin powder shown in Table 2 obtained in Table 2 was sprayed using a spray gun, and immediately after that, it was brought into contact with a conveyance roll heated to 215°C to be fixed, and Examples 5 to 8 were carried out, respectively.

When the obtained sample is directly adhered by the vacuum adhesion method (column 1), and when the surface is adhered by the vacuum adhesion method after wiping the surface with cotton gloves (column ■), the adhesion process is omitted and it is simply powdered. The time required for vacuum adhesion in Table 2 shows that the vacuum adhesion time was shortened when only powdering was applied using the vacuum adhesion method (Comparative Examples 6 to 9 I[1111m) and when no powdering was performed at all (Comparative Example 10). It can be seen that in addition to the remarkable effect, the adhesion of the solid powder is strong.

Next, among the colored image-forming materials of each color created as described above, a colored image-forming material using a pigment of a tone matching cyan was adhered onto white synthetic paper in the same manner as in Example 1, and then a colored image was formed. A color separation network negative film corresponding to cyan is adhered to the surface of the support of the forming material, and image exposure, peeling off of the support, and development are performed in the same manner as in Example 1, thereby coloring cyan on white synthetic paper. An image was formed, and the same operation was repeated for magenta, yellow, and black to form a color blue ink image consisting of four colors on white synthetic paper.

The color proofing color measurements formed with the colored image forming materials of Examples 5 to 8 were clear, but those of Comparative Examples 6 to 1
The color proofing image formed using the colored image forming material No. 0 has local halftone dots (burning blur) in areas where there is poor adhesion to the color separation net negative film, and it lacks sharpness and is extremely It was unsightly.

In addition, the colored image forming materials of Examples 5 to 8 had good slipping properties between colored image forming materials and were easy to handle, but the colored image forming materials of Comparative Examples 6 to 10 were colored image forming materials. The sliding properties between the two pieces were poor, making it difficult to handle.

[Effects of the Invention] As explained above in detail, by using the colored image forming material of the present invention, the time required for vacuum adhesion between the color separation net film and the colored image forming material can be shortened, and areas with poor adhesion can be improved. It has become possible to improve image reproducibility by preventing the occurrence of local thinning or thickening of halftone dots (burning blur), and to improve the handling of bamboo by improving the slipperiness of colored image forming materials.

Claims (2)

[Claims] (1) A colored image-forming material comprising a colored photosensitive layer containing at least a photosensitive composition and a colorant, and an adhesive layer laminated in this order on a support, in which a colored photosensitive layer on the side opposite to the colored photosensitive layer of the support is laminated in this order. A colored image-forming material characterized by having solid powder fixed to its surface. (2) The colored image forming material according to claim 1, wherein the solid powder is fixed by heat.