JPH07175212A - Picture forming material - Google Patents

Abstract

PURPOSE:To provide a picture forming material by which strip development or picture transfer is carried out under heating and pressure and with the dimensional stability of the obtained picture, resolution and ease of processing improved (restrictions on heating conditions when a picture is transferred). CONSTITUTION:This picture forming material has at least a photo-sensitive composition layer with the stickiness and adhesiveness changed by active beam irradiation on a substrate and forms a picture substantially without using any liq., and the first substrate is made of polyethylene naphthalate. At least one photosensitive layer with the stickiness differing by active beam irradiation is provided on the first substrate, a second substrate is furnished on the opposite side of the first substrate with the photosensitive layer in between, and the second substrate is also made of polyethylene naphthalate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming material,
More specifically, the present invention relates to an image forming material that forms an image by a peeling development method after image exposure of an image forming material having a photosensitive layer whose tackiness and adhesiveness are changed by exposure.

[0002]

2. Description of the Related Art Conventionally, an image forming method using a liquid developing solution is known. For example, a photosensitive resin recording material is used, and the non-image portion is removed by the developer by utilizing the property that the solubility and the permeability of the photosensitive resin layer with respect to the developer are changed by exposure to form a relief image. The method was used. Further, a method of forming a lipophilic image by depositing a lipophilic silver mirror imagewise on a hydrophilic surface in a wet state using a silver salt photosensitive material has been used. Although treatment with a liquid is essential in these methods, the liquid treatment has a problem that waste liquid is generated, which is not preferable in terms of environmental hygiene, and the activity of the treatment liquid needs to be kept constant at all times, resulting in poor work efficiency. is there.

As a method for solving these problems, there is known a technique of forming an image by transfer or peeling development without using a developing solution. As such a technique, a method is provided in which a photosensitive layer that causes a difference in adhesiveness between an exposed portion and a non-exposed portion is provided on a support, and after image exposure, the photosensitive layer in the unexposed portion is transferred to an image receptor. (For example, Japanese Patent Publication No. 37-18979, Japanese Patent Publication No. 50-3
6971, JP-A-49-94317, JP-A-63-147154, JP-A-1-1158432, etc.), an image in which a transparent first support, a photosensitive layer and a second support are laminated. A method for forming an image by subjecting a forming material to imagewise exposure and then peeling and developing (eg
43-22901, JP-B-56-1619, JP-A-50-43921, JP-A-51-77324, JP-A-52-57819, JP-A-57-58141), Also, there is known a technique (for example, Japanese Patent Application Laid-Open No. 2-1863) for forming an image by exposing a photosensitive layer whose adhesiveness is changed by exposure to light to the image and then adhering powder to the adhesive non-exposed portion. There is.

The image-forming material used in this type of technique is a layer comprising a support and a photosensitive composition whose tackiness and / or adhesiveness is changed by irradiation with actinic rays (or a cover sheet or an image receptor). ), And the support and / or the cover sheet must be transparent to actinic rays, and therefore a polymer film (particularly a polyethylene terephthalate film) is used.

[0005]

However, when the support and / or the cover sheet is a polymer film in the above-mentioned image forming material, unevenness occurs on the support during a series of image forming operations, and image defects are generated. In some cases, the image may be generated, or the support may be stretched or broken during image transfer or peeling development, and the registration accuracy of the finally obtained image may be changed, or the image may not be obtained. Further, in order to solve these problems, the thickness of the support and / or the cover sheet must be increased in order to increase the rigidity of the support and / or the cover sheet. When heating is required, adverse effects such as stricter heating conditions occur.

An object of the present invention is to provide an image forming material which forms an image by peeling development and which is excellent in dimensional stability, resolution and handleability of a transferred image.

[0007]

The above object of the present invention is achieved by the following or:

Image formation in which an image is formed on a support having at least one photosensitive composition layer whose tackiness and / or adhesiveness is changed by irradiation with actinic rays, and forming an image substantially without using a liquid. In the material, an image forming material, wherein the material of the support is polyethylene naphthalate.

On the first support, there is at least one photosensitive layer having a difference in adhesiveness due to irradiation with actinic rays, and a second layer is provided on the side opposite to the first support with the photosensitive layer sandwiched therebetween. In the image forming material for forming an image substantially without using a liquid, the material of the first support and / or the second support is polyethylene naphthalate. Characteristic image forming material.

The present invention will be described in detail below.

The present invention solves the problems of elongation, breakage, unevenness and the like of the support due to heat and pressure during peeling development and image transfer, and the resulting deterioration of resolution.
This is improved by using a polyethylene naphthalate film in place of the conventional polyethylene terephthalate or the like as the support, and the configuration other than the material of the support of the image forming material and the image forming method are known in this technical field. It is possible to apply commonly used technology including technology.

The photosensitive composition layer of the image-forming material of the present invention is, for example, a photosensitive layer comprising a photopolymerizable composition, a photocrosslinking composition, a composition containing a photosensitive diazo compound or a photodegradable compound, and the like. For example, the present invention is preferably applied to an image forming material having a photosensitive layer (photopolymerizable photosensitive layer) made of a photopolymerizable composition or a photosensitive layer (photocrosslinkable photosensitive layer) made of a photocrosslinking composition. be able to.

The photopolymerizable photosensitive layer is generally composed of a film-forming polymer, a thermoplastic resin, a photopolymerizable compound (compound having a polymerizable unsaturated bond), a photopolymerization initiator, a sensitization aid and the like. However, as an additive, a photopolymerization accelerator, a thermal polymerization inhibitor, a plasticizer, a dye, a pigment, a surfactant, and the like, an adhesion improver with a support or an image receptor, silica, mica, pentonite, etc. Filler, etc., phenol resin, melamine
-It may contain formaldehyde resin, urethane resin and the like.

As these compounds, known compounds can be used. For example, as for the film-forming polymer, JP-A-50-4 is known.
No. 6315, No. 57-62046, No. 63-147154, JP-A-3-94256
No .; regarding the thermoplastic resin, JP-A 64-44928, JP-A
3-107852, 3-184049; for photopolymerizable compounds, JP-A-50-38521, 51-77324, 51-125475, 5
3-53404, 57-58140, 57-62046, 63-147154
No. 64-44928, JP-A 1-219741 and 3-94256,
No. 3-184049; JP-A-63-14715 for photopolymerization initiators.
No. 4, No. 64-44928, JP-A No. 1-219741, No. 3-94256,
No. 3-184049; Japanese Patent Laid-Open No. 3-184049 for sensitizing aids;
Dyes and pigments are disclosed in JP-A-57-62046 and 63-147154.
No. 64-44928, JP-A 1-219741 and 3-94256;
Regarding the thermal polymerization inhibitor, JP-A-57-62046 and 63-14715.
4, JP-A 64-44928, JP-A 1-219741; and JP-A 57-62046 for the plasticizer.

The photocrosslinking type photosensitive layer is usually composed mainly of a polymer compound having a photocrosslinkable structure in its side chain or main chain, and a sensitizer (amplifies spectral sensitivity and intrinsic sensitivity) as an additive. , A plasticizer, a film-forming polymer, a thermal polymerization inhibitor, etc. may be used. Further, dyes, pigments and the like can be added.

Known compounds can be used in any of these,
For example, as the photocrosslinkable polymer compound and the sensitizer,
Japanese Patent Publication No. 50-36971, No. 57-20614, JP-A-49-94317,
No. 53-134421, No. 56-161538, Japanese Examined Patent Publication No. 57-20614, Mototaro Nagamatsu, Hideo Inui, "Photosensitive Polymer" pp. 167-191 (1977)
, Kodansha) and the like. For other additives, the same documents as those described in the photopolymerizable photosensitive layer can be referred to.

Examples of the composition containing a photodegradable compound include a combination of a derivative such as an o-naphthoquinonediazide carboxylic acid adduct and a thermoplastic resin.

An undercoat layer, for example, a heat-softening release layer, an adhesive layer, a hydrophilic layer or the like is provided between each support of the image-forming material of the first and second aspects of the invention and the photosensitive composition layer. It is preferable. Known layers can be applied to these layers. The heat-softening release layer is provided for the purpose of improving transferability, is made of a thermoplastic resin, and has a property of softening when heated,
For example, a thermosoftening layer made of polyolefin described in JP-A-4-172351 can be mentioned. Further, an overcoat layer containing an ultraviolet absorber as described in JP-A-4-39649 may be provided on the photosensitive composition layer.

A cover sheet may be provided on the photosensitive composition layer. In particular, when the photosensitive composition layer is a photopolymerization type, it is preferable to provide a cover sheet.

The image-forming material of the present invention comprises a support provided with a photosensitive composition layer and a cover sheet laminated on the photosensitive layer, which is heated and / or heated in peeling development and / or image transfer. At least the polyethylene naphthalate film is used as the support and the cover sheet that receive pressure, and such a cover sheet is the second support in the invention according to claim 2.

The polyethylene naphthalate film used in the present invention is a film produced by biaxially stretching a polyethylene naphthalate polymer produced by condensation polymerization of naphthalene dicarboxylic acid and ethylene glycol.
It is commercially available from Teijin Ltd. under the trade name of "Teonex Film", and for details, refer to the Industrial Materials May 1993 issue (Vol.41 No.6) p.31-36.

In the image-forming material of the present invention, the surface of the support opposite to the side on which the photosensitive composition layer is provided is subjected to a mold release treatment or a roughening treatment (improvement of slipperiness or adhesion at the time of exposure). (For the purpose).

The cover sheet to be peeled off before peeling development or image transfer need not be polyethylene naphthalate, and known cover sheets can be used as such a cover sheet. For example, a protective film having a releasing effect, that is, polyethylene, polypropylene, polytetrafluoroethylene, or the like, or various types of release-treated films or papers can be used. Among them, polyethylene terephthalate subjected to mold release treatment is preferable. It is also possible to form the coating layer with a polymer such as polyvinyl alcohol.

The image-forming material can be formed by dissolving it in a solvent capable of dissolving the above-mentioned photosensitive composition, coating and drying it on the surface of the support, and further providing a cover sheet if necessary.

After imagewise exposing the image-forming material of the present invention,
The image receptor (image transfer medium) for transferring the image is not limited, and a metal plate such as aluminum, zinc, steel, or copper; chromium,
Metal plate, paper (for example, art paper, coated paper, high-quality paper, etc.) plated with zinc, copper, nickel, aluminum, iron, etc., plastic film and glass plate; paper coated with resin, metal such as aluminum Examples include foil-clad paper, hydrophilized plastic film (see Japanese Patent Publication No. 4-30357), and those obtained by coating these with silicone rubber.

When an aluminum plate is used, it is more preferable that the aluminum plate is subjected to surface treatment such as graining treatment, anodizing treatment and, if necessary, sealing treatment.

Known methods can be applied to these treatments. That is, the graining treatment method includes a mechanical method and an electrolytic etching method, but the electrolytic etching method is preferable.

Examples of mechanical methods include a ball polishing method, a brush polishing method, a liquid honing polishing method, and a buff polishing method. These various methods can be used alone or in combination depending on the composition of the aluminum material.

The electrolytic etching is carried out in a bath in which inorganic acids such as phosphoric acid, sulfuric acid, hydrochloric acid and nitric acid are used alone or in a mixture of two or more kinds. After the graining treatment, if necessary, desmut treatment with an aqueous solution of alkali or acid is performed to neutralize and wash with water.

In the anodizing treatment, a solution containing one or more of sulfuric acid, chromic acid, oxalic acid, phosphoric acid, malonic acid and the like is used as an electrolytic solution, and electrolysis is performed using an aluminum plate as an anode.
The amount of anodic oxide film formed is, for example, an aluminum plate containing a phosphoric chromic acid solution (85% phosphoric acid 35 cc and chromium oxide (VI) 20 g).
Is dissolved in 1 liter of water) to dissolve the oxide film, and the weight change before and after film dissolution of the plate is measured.

Specific examples of the sealing treatment include boiling water treatment, steam treatment, sodium silicate treatment, and dichromate aqueous solution treatment. In addition to this, the aluminum plate support may be subjected to a subbing treatment with an aqueous solution of a water-soluble polymer compound or a metal salt such as fluorozirconic acid.

Known techniques can be applied to form an image using the image forming material of the present invention. When an image is formed using the image forming material of the present invention, unnecessary images are removed in order to make the difference in tackiness and / or adhesive force between the exposed portion and the unexposed portion clearer, or during image formation. Therefore, it is preferable not to use a liquid for image formation except to use a solution that wets or swells the photosensitive composition layer, and when the liquid is used, the amount is preferably 50 ml / m ² or less.

Representative specific examples of forming an image using the image forming material of the present invention will be described below.

(A) The photosensitive composition layer of the image forming material according to claim 1 having a photosensitive composition layer on a support is laminated on an image receptor, for example, a copper surface of a copper-phenol laminate. After imagewise exposure from the support side of the image forming material, the laminate is heated and pressed, and after cooling to room temperature, the image forming material is peeled off to remove the unexposed portion together with the image forming material from the laminate.

(B) An image-forming material according to claim 1, wherein a photosensitive layer having an oil-sensitive property is coated on a support, and a cover sheet is provided if necessary, and imagewise exposed to the exposed portion and unexposed portion in the photosensitive layer. After the cover sheet is removed, the surface of the photosensitive layer is overlapped with an image receptor, such as a hydrophilic lithographic printing plate material, which is heated and pressed. The photosensitive layer in the unexposed area is transferred to the plate material.

(C) An image forming material according to claim 2, wherein a photosensitive composition layer is coated on a support, and a cover sheet is laminated thereon by heating and pressurizing the same, and imagewise exposed from the support side. After that, when the support and the cover sheet are peeled off,
The photosensitive composition layer in the exposed area of the support and in the non-exposed area of the cover sheet are adhered and peeled off to form images on the support and the cover sheet, respectively.

In addition, there is an image forming method described in Japanese Patent Laid-Open No. 2-1863 / 1990, in which an image is formed by adhering powder to the adhesive portion of the unexposed portion.

In the image forming material of the present invention, in the cases (A) and (B) above, the support is polyethylene naphthalate, and in the case (C), the support and the cover sheet are polyethylene naphthalate. Use phthalate. As the support that does not need to be a polyethylene naphthalate support, as described above, for example, a polyethylene film, a polyethylene terephthalate film, an acetate film, or an overcoat layer described in JP-A-4-39649. Can be used.

[0039]

EXAMPLES The present invention will be described in more detail below with reference to examples. In the following description, “part” means “part by weight”.

Example 1 Preparation of Image-Forming Material A polyethylene terephthalate film having a thickness of 16 μm (Lumirror manufactured by Toray Industries, Inc.) and a polyethylene naphthalate film having a thickness of 16 μm and 12 μm (Teonex manufactured by Teijin Ltd.) were used. Each of the photosensitive composition coating liquids (A) was applied so that the film thickness after drying would be ² g / m ² .

Photosensitive composition coating liquid A composition KAYARAD DPHA (manufactured by Nippon Kayaku Co., Ltd.) 100 parts Supercron 907LTA (manufactured by Sanyo Kokusaku Pulp Co., Ltd.) 50 parts 2,4-diethylthioxanthone 1.5 parts p-dimethylamino Ethyl benzoate 1.5 parts Lionol Blue FG7330 50 parts Methyl ethyl ketone 500 parts Further, a silicone coated 40 μm thick high density polyethylene film is laminated as a cover sheet on the photosensitive composition layer to form image forming materials I, II and III. Obtained.

Evaluation of Image-Forming Material The image-forming materials I, II and III obtained above were evaluated for occurrence frequency, workability and registration accuracy by the following methods.

After the positive film original with the register marks and the plate control wedge test kyle of Ugra were closely adhered to the supports of the image forming materials I, II and III, respectively, and vacuum-contacted, the bright room printer P-627HA (Dainippon Screen) was used. It was exposed to light with an integrated light amount of 200 mj / cm ² by using a manufacturing company. The cover sheets of these exposed image forming materials were peeled off, and each photosensitive layer side was adhered to double-sided art paper, Tokubishi Art 110 kg (manufactured by Mitsubishi Paper Mills Ltd.),
Using a laminator, pressure 4kg / cm ² , roller surface temperature 80
An image was transferred at the nip between the rollers at a temperature of 50 ° C. and a passing speed of 50 cm / min, and the image was peeled off immediately after passing through the nip. As a result, an image composed of an unexposed portion at the time of image exposure was formed on the art paper. The size of the image forming material used for these operations was A1.

The workability of the image forming material was evaluated in these series of operations. The workability was evaluated based on whether it is difficult to handle because the image forming material is not stiff. In addition, the occurrence frequency of snakes (the dents formed in the bent marks when the image-forming material is supported by a fingertip or the like and bent at an acute angle) was evaluated based on the number of kittens generated in the series of evaluation work. . If there is a dent, the adhesion to the image receptor is deteriorated during image transfer, resulting in image defects. The registration accuracy was determined by performing the transfer operation twice and evaluating and measuring the deviation between the two registration marks formed. The resolution was evaluated by reproducing the microline of Ugura's plate control wedge test Kyle. The results are shown in Table 1.

Example 2 Preparation of Image-Forming Material A polyethylene terephthalate film having a thickness of 16 μm (Lumirror manufactured by Toray Industries, Inc.) and a polyethylene naphthalate film having a thickness of 16 μm and 12 μm (Teonex manufactured by Teijin Ltd.) were Hoechst synthesized. Water-based emulsion LA-54
4M2 was applied so that the film thickness after drying was 12 g / m ^2, and then a photosensitive composition coating liquid B having the following composition was applied so that the film thickness after drying was 2 g / m ² .

Composition of Photosensitive Composition Coating Liquid B Photosensitive polyester having an average molecular weight of 19000 synthesized according to JP-B-57-20614 100 parts 2-dibenzoylmethylene-3-methyl-β-naphthothiazoline 10 parts Pigment ( Phthalocyanine blue) 30 parts Cyclohexanone 2400 parts Further, 40 as a cover sheet on this photosensitive composition layer.
Image forming material by laminating μm thick OPP film I
V, V and VI were obtained.

Preparation of image transfer medium An aluminum plate was degreased with a 10 wt% sodium hydroxide aqueous solution, and this was electrolytically etched in a 1.8% hydrochloric acid bath at 25 ° C., 30 A / dm ² and a current density of 30 seconds, and washed with water. After that, anodization treatment was carried out for 30 seconds in a 30% sulfuric acid bath at 30 ° C. and 6.5 A / dm ² . Then, with a 1 wt% sodium metasilicate aqueous solution, 85
Image receptor-I was prepared by sealing at 30 ° C. for 30 seconds, washing with water and drying.

Evaluation of Image Forming Material The image forming materials IV, V and VI obtained above were evaluated for the occurrence frequency of snakes, workability and registration accuracy by the following methods.

After image-forming materials, positive film originals with dragonfly marks on the support side of IV, V and VI, and plate control wedge test kyle of Ugra were brought into vacuum contact, a bright room printer P-627HA (Dainippon Screen) was used. It was exposed to light having an integrated light amount of 300 mj / cm ² by using Manufacturing Co., Ltd. The cover sheets of these exposed image-forming materials are peeled off, each photosensitive layer side is brought into close contact with the image receptor-I prepared above, and pressure 8 is applied using a laminator.
An image was transferred at the nip between the rollers under the conditions of kg / cm ² , the roller surface temperature of 95 ° C., and the passing speed of 50 cm / min, and the image was peeled immediately after passing through the nip. As a result, an image composed of the unexposed portion at the time of image exposure was formed on the image receptor.

The size of the image forming material used in these operations was A1.

The workability of the image forming material was evaluated in these series of operations. The evaluation of the frequency of kittens was performed based on the number of kittens generated during the series of evaluation work. The registration accuracy was determined by performing the transfer operation twice and evaluating and measuring the deviation between the two registration marks formed. The resolution was evaluated by reproducing the microline of Ugura's plate control wedge test Kyle. The results are shown in Table 1.

Example 3 Preparation of image forming material A photosensitive composition coating liquid C having the following composition was prepared.

Photosensitive composition coating liquid C Diallyl isophthalate prepolymer 21 parts (Osaka Soda Daiso Indap Mn 45000) KAYARAD DPHA (Nippon Kayaku Co., Ltd.) 7 parts Benzophenone 0.5 parts 4,4 Bis-diethylaminobenzophenone 0.2 Part (EAB Hodogaya Chemical Co., Ltd.) hydroquinone 0.001 part carbon black MA-7 (manufactured by Mitsubishi Kasei Co., Ltd.) 5 parts toluene 38 parts methyl ethyl ketone 40 parts This photosensitive composition coating solution C was applied to a corona with a thickness of 80 μm. High-density polyethylene film treated by electric discharge, polyethylene terephthalate film treated by corona discharge with a thickness of 25 μm,
And a thickness of 2g after drying on the discharge-treated surface of a polyethylene naphthalate film treated with a corona discharge having a thickness of 25 μm
/ M ² was applied to each. Next, a polyethylene terephthalate film having a thickness of 16 μm, a polyethylene naphthalate film having a thickness of 16 μm and a polyethylene naphthalate film having a thickness of 12 μm, which are cover sheets, are laminated on these coated surfaces, and image forming materials-VII, V
Created III and IX.

Evaluation of Image-Forming Material The image-forming materials VII, VIII and IX obtained above were evaluated for the occurrence frequency of snakes, workability and registration accuracy by the following methods.

The image forming material, VII, VIII, and IX were vacuum-bonded to the cover sheet side of the positive film original and the Ugra plate control wedge test kyle, respectively. Screen Manufacturing Co., Ltd.)
Exposure was carried out to be / cm ² . After passing the exposed image-forming material through a heated laminator, the cover sheet and the support were immediately peeled off to form an image having an unexposed photosensitive layer on the cover sheet.

Next, each photosensitive layer side is a double-sided art paper,
Tokishi Art 110kg (manufactured by Mitsubishi Paper Mills Ltd.) was in close contact with a laminator, pressure was 4kg / cm ² , roller surface temperature was 85 ° C,
An image was transferred at the nip between the rollers at a passing speed of 50 cm / min, and immediately after passing through the nip, the image was peeled off. As a result, an image composed of an unexposed portion at the time of image exposure was formed on the art paper. The size of the image forming material used for these operations was A1.

The workability of the image forming material was evaluated in these series of operations. The evaluation of the frequency of kittens was performed based on the number of kittens generated during the series of evaluation work. The registration accuracy was determined by performing the transfer operation twice and evaluating and measuring the deviation between the two registration marks formed. The results are shown in Table 1.

Example 4 Preparation of image forming material A photosensitive composition coating liquid D having the following composition was prepared.

Photosensitive composition coating liquid D Chlorinated polyethylene 10 parts (Sanyo Kokusaku Pulp Co., Ltd. Supercron CPE-907LTA) Pentaerythritol dimethacrylate 10 parts 2-Methyl-anthraquinone 0.2 parts Hydroquinone 0.1 parts Copper phthalocyanine dye 0.2 Part Methyl ethyl ketone 100 parts Dimethylformamide 20 parts This photosensitive composition coating liquid D is a 25 μm thick polyethylene terephthalate film (Lumirror manufactured by Toray Industries, Inc.), and
20 μm thick polyethylene naphthalate film (Teijin
The film thickness after drying on Teonex Co., Ltd.) is 1.5 g / m ²
Was applied so that

Further, an OPP film having a thickness of 40 μm was laminated as a cover sheet on the photosensitive composition layer to obtain image forming materials X and XI.

Evaluation of Image-Forming Material With respect to the image-forming materials X and XI obtained above, the occurrence frequency of snakes, workability and register accuracy were evaluated by the following methods.

The cover sheets of the image forming materials X and XI were peeled off, and the respective photosensitive composition layer sides were applied to the image receptor-I prepared in Example 2 with a laminator at a pressure of 1 kg / cm ² and a roller surface temperature of 40. Adhesion was performed under the conditions of ℃ and passing speed of 50 cm / min. Next, a negative film original with dragonfly marks and a plate control wedge test kyle of Ugura were vacuum-contacted to the support side of this sample, and a bright room printer P-627HA (manufactured by Dainippon Screen Mfg. Co., Ltd.) was used. And exposed so that the integrated light amount was 200 mj / cm ² . The exposed imaging material support of these exposed samples was then
The angle between the image receptor-I and the support is 30 ° at a speed of cm / min.
Peeling was performed while making the above.

As a result, an image was formed on the image receptor, which was composed of the exposed portion during image exposure. The size of the image forming material used for these operations was A1.

The workability of the image forming material was evaluated in these series of operations. The evaluation of the frequency of kittens was performed based on the number of kittens generated during the series of evaluation work. The registration accuracy was determined by performing the transfer operation twice and evaluating and measuring the deviation between the two registration marks formed. The results are shown in Table 1.

[0065]

[Table 1]

(Note) In Table 1, "○" in the workability column indicates that the image forming material is flexible and easy to handle, and the workability is very good.
“Δ” means normal, and “x” means very bad.

From the above examples, it can be seen that the image forming material of the present invention is improved in workability, generation of dents, resolution and register accuracy, that is, dimensional stability.

[0068]

INDUSTRIAL APPLICABILITY According to the present invention, the dimensional stability and resolution of an image formed by an image-forming material used by heating or pressurizing at the time of peeling development or transfer are improved, and the image transfer is also improved. The restrictions on the heating conditions at the time are relaxed, and the ease of handling is improved.

Claims (2)

[Claims] 1. A support having at least one photosensitive composition layer whose adhesiveness and / or adhesiveness is changed by irradiation with actinic rays, and forming an image substantially without using a liquid. In the image forming material, the material of the support is polyethylene naphthalate. 2. A first support having at least one photosensitive layer which causes a difference in tackiness upon irradiation with actinic rays, and the photosensitive layer is provided on the opposite side of the first support. In an image forming material which is provided with a second support and which forms an image substantially without using a liquid, the material of the first support and / or the second support is polyethylene naphthalate. An image forming material characterized by the above.