JPS62195647A - Material for forming multicolor picture image - Google Patents

Abstract

PURPOSE:To improve a picture image forming material to high sensitivity by forming a photosensitive layer comprising photosensitive modified polyvinyl alcohol having a stilbazolium group or a stilquinolium group, and a coloring agent on a base body interposing an intermediate layer. CONSTITUTION:Photosensitive modified polyvinyl alcohol having a stilbazolium group or a stilquinolium group expressed by the formulas I or II as photosensitive component group is used. In the formulas, R1 and R2 are H, alkyl; y<-> is a chlorine ion of conjugate acid; n is zero or 1. A photosensitive layer is formed by coating the photosensitive modified polyvinyl alcohol and a coloring agent on a base body (polyethylene terephthalate, etc.) interposing an intermediate layer comprising hydrophobic resin (e.g. polyamide, etc.) softened by an org. solvent. Further, if >=two layers of the photosensitive layer are formed and the tone of the coloring agent for each layer is changed, a multicolor picture image forming material is obtd. Since a multicolor picture image forming material is formed by using a specified photosensitive modified polyvinyl alcohol and a coloring agent, the sensitivity of the picture image is made higher and the preservation stability of the material is improved.

Description

[Detailed Description of the Invention] [Technical Field] The present invention provides a negative-positive type multicolor image forming material that can express images of two or more colors as a plate inspection and proofing material in the printing and plate making field, and as a reproduction material in the design and drafting field. Regarding.

(Prior art) Traditionally, in the field of design and drawing, for example, architectural designs and planning drawings are recorded with a black floor plan, blue water piping, yellow electrical wiring, and red gas piping superimposed on a single sheet of film. There are several ways to use multicolor image forming materials.

In addition, in the field of printing and plate making, for example, there is a tendency to print textbooks with red and blue text in order to emphasize important parts. There are uses for materials.

As for the multicolor image forming methods used for these purposes, there are the following methods.

(1) Subprint method A photosensitive solution containing pigments of each color is applied onto a single support using a spin coating or a wiper method, and after exposure, the soluble portion is removed with a developer or tackified by light irradiation. A solution of a photosensitizer that has the property of disappearing is applied onto the substrate using a pouring method, and after exposure, a color separation image is formed by attaching color toner to the unexposed areas that remain sticky.
A multicolor image is formed by repeatedly applying a photosensitive liquid thereon and developing it.

(2) Overlay method A diazo photosensitive material coated on a transparent film is exposed, and ammonia gas development or wet development is performed to obtain a color separation image, or a diazo resin containing pigments of each color is pre-coated on a transparent film. After exposure, the soluble portion is dissolved and removed using a developing solution to create separate color images, and the resulting images are superimposed to form a multicolor image.

However, such conventional methods have the following problems.

In other words, in method (1), the user of the image forming material must prepare, apply, and dry the photosensitive liquid himself.
Further, a device for that purpose is also required, which is poor in workability and economy. In method (2), only a transparent film base can be used, making heating correction difficult and requiring multiple layers of film bases, making handling complicated. When a diazo photosensitive material is used, there is also a problem of image discoloration and fading.

The present inventors have already filed Japanese Patent Application No. 58-140912 (Japanese Unexamined Patent Publication No. 50-32045) to solve the above-mentioned problems.
A multicolor image-forming material formed by forming two or more photosensitive layers consisting of a diazo resin, a water-soluble resin, and a colorant on a support via an intermediate layer consisting of a hydrophobic, water-resistant, and organic solvent-softening resin. and its image forming method were proposed.

(Object of the Invention) The object of the present invention is to improve the multicolor image forming material related to the above application, and more specifically, to provide a multicolor image forming material with higher sensitivity and excellent storage stability.

(Structure of the Invention) The multicolor image-forming material of the present invention has a water-developable photosensitive layer formed on a support for each photosensitive layer via an intermediate layer made of a hydrophobic, water-resistant, organic solvent-softening resin. An image-forming material coated in multiple layers with different tones of colorants is pattern-exposed from above the intermediate layer, and before and after the photo-insolubilization reaction, the photosensitive layer is immersed and added to an organic solvent that softens the intermediate layer resin without dissolving the components of the photosensitive layer. By washing with room temperature water jetted from a pressurized nozzle, the unexposed area (non-image area) of the photosensitive layer directly below the intermediate layer is removed, excluding the image area already formed on the intermediate layer. This method utilizes the phenomenon that the negative multicolor image is removed by washing with water together with the upper intermediate layer, resulting in a good negative multicolor image.

This phenomenon in which the intermediate layer is removed is that when immersed in the organic solvent, the intermediate layer resin softens and becomes removable, but the portion where the image is formed on the upper layer is directly affected by the image This is because no water pressure is applied to the pigment, so it is not removed.Additionally, by adding a pigment to the intermediate layer in advance, the permeability of the organic solvent increases, softening is easy, and removability by water pressure becomes much higher.

In other words, the unexposed parts of the photosensitive layer directly below the exposed intermediate layer, which does not have an image on the upper layer, can be easily removed with water. If the photosensitive layer is in a state where it can be easily penetrated, the unexposed portion of the photosensitive layer is easily removed together with the upper intermediate layer by water pressure. On the other hand, when the upper photosensitive layer is exposed, the lower photosensitive layer is also exposed to the active rays that have passed through this layer, so the water resistance of that portion increases and is not easily removed by washing with water. If the organic solvent strongly dissolves the intermediate layer resin, the intermediate layer resin will be dissolved during the image forming process on the lower photosensitive layer, and the image on the upper layer will be washed away. Therefore, organic solvents that have no or very low solubility in the intermediate layer resin and have high softening properties are preferred.

The present invention applies the above phenomenon to provide a multicolor image forming material in which a photosensitive layer on which an image of each color is formed is already formed on a single support, and stilbazolium is used as a material constituting the photosensitive layer. The present invention is characterized in that it utilizes modified polyvinyl alcohol (hereinafter abbreviated as photosensitive modified polyvinyl alcohol) having at least one selected from the group consisting of stylquinolium groups and stilquinolium groups as a photosensitive component addition group.

[For production]

The present invention will be explained in detail below.

Supports used in the present invention include plastic films such as polyethylene terephthalate, polypropylene, polyethylene, polyvinyl chloride, polystyrene, polycarbonate, and triacetate, glass plates, and paper made waterproof by laminating polyethylene or polypropylene on both sides. can be mentioned.

In addition, in order to provide writing properties on one or both sides with a pencil, ink, ballpoint pen, etc., we use a sand matte film by sandblasting, a coated surface made by blending additives such as dyes, pigments, and fillers in the binder. It is also possible to use a plastic film that has undergone drafting suitability, such as a chemical matte film that has a chemical matte film, an etched matte film that has been etched with an alkali, and an opalescent processed film that has a white pigment kneaded into its coating. The thickness of the support is not particularly limited, but is 50~
Approximately 150μ is appropriate.

Although the photosensitive layer may be directly coated on these supports, in order to improve adhesiveness, it is desirable to perform corona discharge treatment, coating with a primer treatment agent, or adhesive processing using a combination of these in advance.

As the primer treatment agent, although it depends on the support, phenol resin, polyester resin, urethane resin, vinylidene chloride-vinyl acetate copolymer, vinyl chloride-vinylidene chloride copolymer, vinylidene chloride-acrylonitrile copolymer, etc. are preferably supported. 0.1-2.0 g/TIi on the body
Apply with a treatment film thickness of . In particular, when a sand matte film or a chemical matte film is used as a support, the above-mentioned steps are taken to strengthen the adhesion between the matte layer and the photosensitive layer and to prevent scumming, that is, to prevent the adsorption of colorants used in the photosensitive layer. It is preferable to apply a primer treatment agent.

The photosensitive layer used in the present invention consists of photosensitive modified polyvinyl alcohol and a colorant.

The photosensitive layer of the present invention needs to be soluble in water and insolubilized by actinic rays. It is important that the resin is not dissolved in the solvent used when coating the intermediate layer and the organic solvent that softens the intermediate layer resin before and after the photocuring reaction. Stability of the image is required. After satisfying the above conditions and taking into consideration the wide selection range of organic solvents for softening the intermediate layer resin, the present inventors proposed a photosensitive layer mainly composed of diazo resin and water-soluble resin. However, (the above-mentioned patent application No. 14091/1983)
2, Japanese Unexamined Patent Publication No. 60-32045>, as a result of extensive studies, it was discovered that by using the photosensitive modified polyvinyl alcohol related to the present invention, a multicolor image forming material with superior sensitivity and storage stability can be obtained. .

The photosensitive modified polyvinyl alcohol used in the present invention has the following general formulas (1) and (II> [However, in the above formula, R] and R2 each independently represent a hydrogen atom or an alkyl group, and Y- is represents a conjugated chlorinated ion of an acid, m represents an integer of 1 to 6, and n
represents O or 1] is a modified polyvinyl alcohol having at least one selected from a stilbazolium group and a stilquinolinium group as a photosensitive component addition group. Such photosensitive modified polyvinyl alcohols are disclosed in Japanese Patent Publication No. 56-5761, Japanese Patent Publication No. 56-5782,
It can also be produced using the method described in JP-A-56-11906. The colorant used in the photosensitive layer of the present invention can be selected from a wide range of colors, including water-dispersible pigments, water-soluble dyes, and alcohol-soluble dyes.

In general, the photosensitive layer of the present invention contains a vinyl acetate-polyvinyl alcohol emulsion or a vinyl acetate-acrylic copolymer emulsion for the purpose of increasing the adhesion to the support or intermediate layer, and for the purpose of increasing the water resistance of the obtained image. Water-soluble products such as vinyl acetate emulsions, cellulose derivatives such as carboxymethylcellulose and hydroxycellulose, polyvinyl alcohol, polyvinylpyrrolidone, casein, gelatin, polyacrylamide, polyethylene oxide, polyacrylic acid and its salts, polymethacrylic acid and its salts, etc. A mixture of resins may be used.

In addition to the above ingredients, the photosensitive layer also contains stabilizers, thermal polymerization inhibitors, preservatives, etc. to prevent dark reactions, as well as leveling agents, antifoaming agents, surfactants, etc. to improve coating properties. It can be added as needed. In preparing the photosensitive layer, the above components are mainly dissolved or dispersed in water and mixed, but for the purpose of defoaming and improving coating properties, water-soluble organic solvents such as alcohols may be added as necessary. can also be used as part of the diluent. From the viewpoint of image reproducibility, the thickness of the photosensitive layer is preferably as thin as possible, and a processed film thickness of 1 to 5 .mu.m is preferable.

The amount of colorant added to the photosensitive layer is appropriately selected depending on the type of colorant and the target image density. The photosensitive layer thus obtained was superior in sensitivity and storage stability to photosensitive layers mainly composed of diazo resins and water-soluble resins, and exhibited substantially the same performance in other properties.

The intermediate layer used in the present invention is made of a resin having water resistance and organic solvent softening properties. The resin that forms the intermediate layer is
The solvent for coating it must contain at least one organic solvent that does not dissolve the photosensitive layer before photocuring and softens the intermediate layer resin without dissolving the photosensitive layer after photocuring. It can be used in a wide variety of ways. For example, polyamide resin,
Isopropyl alcohol can be selected as the organic solvent for softening polyvinyl acetate, polyvinyl butyral, polyvinyl formal, etc. Polyvinylidene chloride, vinyl chloride-vinyl acetate copolymers, various cellulose derivatives, etc. can be used by selecting butyl acetate as the organic solvent for softening. Further, the primer treatment agent is applied to the intermediate layer.
It is also possible to increase the adhesion between the intermediate layer and the photosensitive layer by adding it in an amount of 0 parts or less. In general, an organic solvent for softening the intermediate layer, a solvent used for coating the intermediate layer resin, and fine particles that do not dissolve in water and have no reactivity with the colored photosensitive layer and the intermediate layer resin. Pigments can be used to increase the permeability of organic solvents to soften the intermediate layer. For example, you can choose inorganic pigments such as silica, titanium dioxide, clay, zinc oxide, and barium sulfate. In this way, by adding no pigment or by adding a transparent pigment, the intermediate layer can reproduce the color tone as a mixture with the color tone of the upper or lower photosensitive layer of the intermediate layer, or by hiding it with a white pigment, the lower photosensitive layer can reproduce the color tone of the intermediate layer. It is also possible to cancel out the color tone. However, it must not excessively impede the transmission of actinic rays through the underlying photosensitive layer. The amount of pigment added varies depending on the type of pigment, particle size, color tone, etc., but it is preferably between 10% and 100% of the resin used for the intermediate layer.

The thickness of the intermediate layer is preferably as thin as possible from the viewpoint of actinic ray transmittance and image reproducibility of the photosensitive layer, and is preferably 0.5 to 0.5.
Good images can be obtained with a processed film thickness of 4μ.

In the multicolor image forming material of the present invention, photosensitive layers and intermediate layers consisting of the above photosensitive layer composition and intermediate layer composition are provided alternately on a support coated with a primer treatment agent as the case may be, and the uppermost layer is the photosensitive layer. It's what I made it to be. Here, if too many photosensitive layers are provided, an image already formed on the upper layer may be washed away when the lower photosensitive layer is being developed. In order to avoid this phenomenon, the number of photosensitive layer coating layers is preferably 5 or less. The primer treatment agent, photosensitive layer composition, and intermediate layer composition may be applied by any conventionally known method such as roll coating, reverse roll coating, dip coating, wire bar coating, etc., and can be applied uniformly without pinholes. There are no particular limitations as long as a coating film can be obtained.

The multicolor imaging material of the present invention can be imaged by the following steps.

(1) Photosensitive layer The uppermost photosensitive layer on the coated surface is exposed to light with a negative original in close contact with it.

The light source used for exposure may be any light source that has a spectral energy distribution that effectively causes the photoinsolubilization reaction of the photosensitive layer, such as various mercury lamps, carbon arc lamps, xenon lamps, metal halide lamps, ultraviolet I! Fluorescent lights etc. can be used.

(2) The uppermost photosensitive layer on the photosensitive layer coated surface is washed with water and dried.

Washing is performed by showering with room temperature water that is pressurized to 2 Kg/crA or less and jetting out from a nozzle, or by immersing it in room temperature water and rubbing it lightly with a sponge.

Drying is performed with warm air at a temperature of 80°C or less.

(3) Photosensitive layer The second photosensitive layer from the top of the coated surface is exposed to light by contacting it with a negative original from above the upper intermediate layer.

(4) Immersing the intermediate layer resin in an organic solvent that softens it.

The immersion time varies depending on the combination of interlayer resin and organic solvent. If the immersion time is too short, washing and development cannot be carried out in the next step (5), and if the immersion time is too long, the image formed on the upper layer in step 1 may be washed away. In this step, the surface of the intermediate layer may be wetted with a sponge impregnated with an organic solvent.

(5) Photosensitive layer The second photosensitive layer from the top of the coated surface and the upper intermediate layer in contact with this are washed with water and dried.

The washing method is the same as (2). At this time, except for the image area already formed on the upper layer, the unexposed area (non-image area) of the second photosensitive layer from the top, which is in direct contact with and below the intermediate layer, is removed by washing with water together with the upper intermediate layer.

If three or more photosensitive layers are coated, also apply to the third and subsequent photosensitive layers from the top of the photosensitive layer coating surface (3) (4)
Repeat step (5) in sequence.

〔Example〕

Examples will be shown to explain the present invention in more detail, but the present invention is not limited thereto.

Example 1 Solution A (primer treatment solution) Solution B (photosensitive layer forming solution) Solution C (intermediate layer forming solution) ■Toluene 95 parts by weight Ethyl acetate 95 parts by weight Silica was dispersed in a ball mill for 8 hours using the following composition. I used something.

Liquid D (photosensitive layer forming liquid) In the liquid B composition, only the pigment dispersion liquid was used as the carbon black dispersion liquid (Aqua Fine Black E-2B manufactured by Oguchi Seika Co., Ltd.)
30% liquid).

Solution A was coated on one side of synthetic paper (YUPO FPG-110μ manufactured by Oji Yuka) using a roll coater and dried for 1 minute to provide a primer treatment with a dry film thickness of about 1μ. Next, liquid B was applied on top of it using a wire bar to a dry film thickness of 2 μm, and dried for 2 minutes in a blow dryer at 80°C to form a magenta photosensitive layer with a reflection density of 1.
．． 45G filter). Liquid D was roughly applied thereon using a wire bar to a dry film thickness of 1 μm, and dried for 1 minute in a blow dryer at 80° C. to form a translucent intermediate layer. Liquid D was roughly coated thereon under the same conditions as liquid B to give a dry film thickness of 2 μm, and a black photosensitive layer was formed (reflection density 1.70W filter) to obtain a two-color image forming material.

Incidentally, the reflection density was measured using DM-400 (manufactured by Oguchi Screen Manufacturing Co., Ltd.).

Next, a negative text manuscript with only the important terms restored is brought into close contact with the photosensitive layer-coated surface of this two-color image forming material.
Exposure for 25 seconds from a distance of 1TrL using a KW ultra-high pressure mercury lamp, then expose the unexposed area (non-image area) to 1°5KH/a.
A dissolution image was formed with room temperature water jetted from a nozzle pressurized to 7 tons, and after draining, it was dried with warm air at 70° C. to form a black character image on the black photosensitive layer. Furthermore, a negative character original consisting of only the important part 8H of the above text was brought into close contact with the intermediate layer of the photosensitive layer coated surface, and after being exposed to light for 12 seconds under the same exposure conditions, it was immersed in butyl acetate for 5 seconds. Then, the non-image area was immediately dissolved and imaged using water under the above conditions. At this time, the upper intermediate layer in contact with the non-image area is also removed at the same time, and the non-image area where the black image has already been formed on the upper layer is not eluted, and the black image layer and intermediate layer on the upper layer of that area are not eluted. The layers were not washed away either. After drying, a magenta image was formed on the magenta photosensitive layer.

In this way, we were able to obtain a text image in which the normal text is black and only the important parts are magenta.

The material improved by 1 in this example could be effectively used in the field of printing plate making as a two-color character proofing material.

Example 2 Solution E (primer treatment solution) Solution F (photosensitive layer forming solution) -1-methylstilbazolium group introduction solution G (intermediate layer forming solution) Solution 1 (photosensitive layer forming solution) Pigment in the composition of solution F Only the dispersion used was the carbon black dispersion used in Solution D.

Liquid E was applied with a roll coater to the matte surface of a 75μ thick polyethylene terephthalate film that had been subjected to sand matte processing using the sandblasting method, and dried at 100°C for 1 minute to obtain a dry film thickness of approximately 0.2μ. Obtained. Next, a cyan photosensitive layer made of liquid E, an intermediate layer made of liquid G, and a black photosensitive layer made of liquid H were sequentially applied in the same manner as in Example 1 to the same dry film thickness to form a two-color image forming material. Ta.

Next, in exactly the same manner as in Example 1, the black photosensitive layer is exposed with a city map, and the cyan photosensitive layer is exposed with the water piping map, and image formation processing is performed to create a black city map on a single film. A cyan colored water piping diagram was formed. Here, the area where the line drawings in both figures overlap is a mixture of black and cyan because the intermediate layer is semitransparent, and the transmission density of the black image area is 1.3.
5. The cyan image area was 0.60 (Image density was measured using a transmission thickness meter DM-500 (Oguchihon - Tallinn (II))
by). Roughly, this was used as a manuscript, printed on commercially available diazo photosensitive paper, and developed. As a result, the city map was reproduced darkly, while the water piping map was reproduced thinly, and the density was such that it was easy to distinguish between the two maps.

The material obtained in this example could be effectively used in a wide range of applications such as H1 drafting, surveying, and maps as a 21st century map film suitable for drafting and capable of forming two-color images.

Example 3 Solution H (photosensitive layer forming solution) Solution J (photosensitive layer forming solution) In the composition of Solution H, only the pigment dispersion was replaced with the naphthol A3 dispersion used in Solution B.

K liquid (photosensitive layer forming liquid) In the composition of H liquid, only the pigment dispersion liquid was changed to the Cyan blue dispersion used in E liquid.

Liquid L (photosensitive layer forming liquid) Liquid H has a composition in which only the pigment dispersion is replaced with the carbon black dispersion used in Liquid D.

Liquid M (intermediate layer forming liquid) Titanium dioxide was dispersed in a ball mill for 8 hours in the following formulation.

The dry film thickness was 2μ for the photosensitive layer and 2μ for the intermediate layer in the order of H solution, M solution, J solution, M solution, K solution, M solution, and L solution on the sand matte film subjected to the primer coating treatment of Example 2. The photosensitive layer was coated with a wire bar to a thickness of 0.8 μ, and the photosensitive layer was dried at 80°C for 2 minutes using a blow dryer, and the intermediate layer was dried at 80°C for 1 minute. 4 colors with photosensitive layers colored in the order of yellow (reflection density of each photosensitive layer is 1.80 (W filter > 1.30 (R filter) 1.20 (G filter) 0.80 (B filter)) An imaging material was obtained.

Next, prepare four negative originals: a floor plan of the building, a water piping diagram, a gas piping diagram, and an electrical wiring diagram.First, place the original of the floor plan in close contact with the photosensitive surface, and use a 2KW ultra-high pressure mercury lamp at a distance of 1m. After that, the unexposed area was exposed to 1.5K.
A dissolution image was formed with room temperature water jetted from a nozzle pressurized to I/ctA, and after draining, it was dried with warm air at 70° C., and a black floor plan was formed on the black photosensitive layer. Next, the water piping diagram was aligned with the black image of this floor plan and adhered to the photosensitive layer through the intermediate layer, and exposed for 18 seconds under the same conditions. The mixture was allowed to stand until the photosensitive layer was visible, and after an aqueous image appeared under the above conditions, it was dried to obtain a cyan image of a water piping diagram on the cyan photosensitive layer.

Subsequently, images were sequentially formed using the same process as the cyan photosensitive layer, with exposure times of 15 seconds and 12 seconds, respectively, for the gas color scheme and diagram on the magenta color photosensitive layer and the electrical wiring diagram on the yellow color photosensitive layer. Obtained architectural blueprints. In this case, because the intermediate layer has a high hiding power, the color tone of the photosensitive layer that forms the image on the surface is not affected by the coloring agent in the lower layer, and the color tone is black, cyan, magenta,
Each figure was reproduced in a yellow tone, and the differences were clearly distinguishable.

The material obtained in this example could be effectively used in a wide range of applications, such as design drawings and survey maps, as a second original drawing film suitable for drafting and capable of forming four-color images.

Comparative Example 1 Liquid N (photosensitive layer forming liquid) Liquid 0 (photosensitive layer forming liquid) In the composition of liquid N, only the pigment dispersion liquid was replaced with the carbon black dispersion used in liquid D.

In the same manner as in Example 1, liquid A, liquid N, liquid D, and liquid D were coated on one side of a synthetic 110μ film in that order so that each photosensitive layer had the same reflection density to form a two-color image forming material. Obtained. Next, when the same original as in Example 1 was used and developed in the same manner as in Example 1, exposure for 60 seconds for the black photosensitive layer and 1330 seconds for the red photosensitive layer was required to obtain a good image (Table 1) .

Comparative Example 2 Liquid P (Photosensitive layer forming liquid) Liquid Q (Photosensitive layer forming liquid) In the composition of Liquid P, only the pigment dispersion was changed to the naphthol As dispersion used in Liquid D.

R liquid (photosensitive layer forming liquid) In the composition of the P liquid, only the pigment dispersion liquid was changed to the Cyan blue dispersion used in the P liquid.

Liquid D (photosensitive layer forming liquid) A liquid in which only the pigment dispersion in the composition of Liquid P was replaced with the carbon black dispersion used in Liquid D.

The reflection density of each photosensitive layer was applied to the sand matte film subjected to the primer treatment of Example 2 in the same manner as in Example 3 using liquid P, liquid M, liquid Q, liquid M, liquid R, liquid M, and liquid D in this order. A four-color image forming material was obtained by coating so that the colors were the same.

Next, when the same original as in Example 3 was used and developed in the same manner, it was found that in order to obtain a good image, the black photosensitive layer 8
It required exposure for 0 seconds, cyan color photosensitive layer for 40 seconds, magenta color photosensitive layer 30 seconds, and yellow color photosensitive layer 25 seconds (Table 1
).

In addition, Example 1 and Comparative Example 1, Example 3 and Comparative Example 2 were heated at 30°C.
The samples were stored in a constant temperature and humidity chamber at 90% RH, taken out at regular intervals, and processed using the developing method shown in the examples to check for image formation, fogging, etc. All of the results are related to the present Komei. Multicolor imaging materials were superior (Table 2)
.

〔Effect of the invention〕

According to the present invention, a multicolor image forming material with higher sensitivity and excellent storage stability was obtained without impairing other properties.

Therefore, the exposure time for obtaining an image has been shortened, and the useful life of the photosensitive material has been extended.

Exposure conditions: light source 2KW ultra-high pressure mercury lamp, distance 1ill11
It was processed and evaluated by the 7rL Genyu method.

0: Good image formed, Δ: Fog occurred, X: Non-developable procedure correction form (voluntary)

Claims (1)

[Claims] (1) The following general formulas (I) and (II) are formed through an intermediate layer made of a resin having hydrophobicity, water resistance, and organic solvent softening properties. ▲There are mathematical formulas, chemical formulas, tables, etc.▼...(I) ▲ There are mathematical formulas, chemical formulas, tables, etc.▼...(II) [However, in the above formula, R_1 and R_2 each independently represent a hydrogen atom and an alkyl group, and Y^- is a conjugated chlorinated ion of an acid. , m represents a conjugated chlorinated ion of the acid, m represents an integer from 1 to 6, and n
represents 0 or 1] Two or more photosensitive layers each consisting of a modified polyvinyl alcohol having at least one selected from stilbazolium group and stilquinolinium group as a photosensitive component addition group and a colorant, each photosensitive layer. A multicolor image forming material, characterized in that it is formed on a support with a colorant having a different tone for each image.