Patent US2946710A successfully refreshed from Google Patents.
EP0100938A2
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EP
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Treatment of image-forming laminated plate
Assignee: Toray Industries Inc
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Filing: 1983-07-20
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Granted: —
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Expires: 2003-07-20
Abstract
Abstract An image-forming laminated plate, particularly a dry planographic printing unprocessed plate, comprising a base substrate, a photosensitive layer containing a substance with quinonediazide structure and a silicone rubber layer in laminating order is treated with a base after imagewise exposure. In addition, the image-forming laminated plate may be subjected to a whole surface slight exposure to the extent that 5 to 60 molar % of the quinonediazide structure in the photosensitive layer to be exposed is photo-decomposed into carboxylic acid structure before or after the usual imagewise exposure for obtaining a negative working plate, or the image-forming laminated plate may be subjected to a imagewise slight exposure to the same extent without the usual imagewise exposure for obtaining a positive working plate. The base-treatment alone or in combination with the slight exposure enhances both the adhesion of the photosensitive layer to the silicone rubber layer and the solvent resistance of the photosensitive layer in non-image areas.
Inventors
- 👤 Norio Kawabe
- 👤 Mikio Tsuda
- 👤 Sadao Kobashi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 14:23
CPC Classifications
G; G03; G03C; G03C5/00; G03F; G03F7/00; G03F7/004; G03F7/075; G03F7/0752; G03F7/26; G03F7/38
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
46 words
A process for treating an image-forming laminated plate comprising a base substrate, a photosensitive layer containing a substance with quinonediazide structure and a silicone rubber layer in laminating order, characterized in that the image-forming laminated plate is subjected to a treatment with base after exposing imagewise.
Claim 2
Dependent Claim
46 words
A process for treating an image-forming laminated plate comprising a base substrate, a photosensitive layer containing a substance with quinonediazide structure and a silicone rubber layer in laminating order, characterized in that the image-forming laminated plate is subjected to a treatment with base after exposing imagewise.
Claim 3
Dependent Claim
36 words
The process of claim 1 wherein an adhesive layer of aminosilane and/or organotitanate is interposed between the photosensitive layer and the silicone rubber layer, or the aminosilane and/or organotitanate is contained in the silicone rubber layer.
Claim 4
Dependent Claim
21 words
The process of claim 1 wherein the base in the treatment with base is an organic base and/or an inorganic base.
Claim 5
Dependent Claim
13 words
The process of claim 3 wherein the organic base is an amine compound.
Claim 6
Dependent Claim
25 words
The process of claim 1 wherein the treatment with base is effected before or at the same time of developing the exposed image-forming laminated plate.
Claim 7
Dependent Claim
21 words
The process of claim 1 wherein a whole surface exposure of the image-forming laminated plate is effected before the imagewise exposure.
Claim 8
Dependent Claim
27 words
The process of claim 1 wherein a whole surface exposure of the image-forming laminated plate is effected after the imagewise exposure and before the treatment with base.
Claim 9
Dependent Claim
33 words
The process of claim 6 or 7 wherein the whole surface exposure is effected to the extent that 5 to 60 molar % of the quinonediazide structure in the photosensitive layer is photo-decomposed.
Claim 10
Dependent Claim
36 words
The process of claim 6 or 7 wherein the imagewise exposure is effected through a negative original to the extent that at least 70 molar % of the quinonediazide structure in the photosensitive layer is photo-decomposed.
Claim 11
Dependent Claim
34 words
The process of claim 1 wherein the imagewise exposure is effected through a positive original to the extent that 5 to 60 molar % of the quinonediazide structure in the photosensitive layer is photo-decomposed.
Claim 12
Dependent Claim
34 words
The process of claim 1 wherein the imagewise exposure is effected through a negative original to the extent that at least 70 molar % of the quinonediazide structure in the photosensitive layer is photo-decomposed.
Claim 13
Dependent Claim
53 words
A process of treating a dry planographic printing unprocessed plate which is laminated in the order of a base substrate, a photosensitive layer containing a substance with quinonediazide structure and a silicone rubber layer, characterized in that the dry planographic printing unprocessed plate is subjected to a treatment with base after exposing imagewise.
Claim 14
Dependent Claim
53 words
A process of treating a dry planographic printing unprocessed plate which is laminated in the order of a base substrate, a photosensitive layer containing a substance with quinonediazide structure and a silicone rubber layer, characterized in that the dry planographic printing unprocessed plate is subjected to a treatment with base after exposing imagewise.
Claim 15
Dependent Claim
117 words
The process of claim 12 wherein the imagewise exposure is effected through a negative original to the extent that at least 70 molar % of the quinonediazide structure in the photosensitive layer of imagewise exposed areas is photo- decomposed to form a latent image, after eliminating the negative original a whole surface exposure is effected to the extent that 5 to 60 molar % of the quinonediazide structure in the photosensitive layer of imagewise unexposed areas is photo-decomposed, and subsequently the treatment with base is effected before or at the same time of development and at least silicons rubber layer in image areas is removed by the development, thereby producing a negative working dry planographic printing plate.
Claim 16
Dependent Claim
113 words
The process of claim 12 wherein before the imagewise exposure a whole surface exposure is effected to the extent that 5 to 60 molar % of the quinonediazide structure in the photosensitive layer is photo-decomposed, and then the imagewise exposure is effected through a negative original to the extent that at least 70 molar % of the quinonediazide structure in the photosensitive layer of imagewise exposed areas is photo- decomposed to form a latent image, subsequently the treatment with base is effected before or at the same time of development and at least silicone rubber layer in image areas is removed by the development, thereby producing a negative working dry planographic printing plate.
Claim 17
Dependent Claim
83 words
The process of claim 12 wherein the imagewise exposure is effected through a positive original to the extent that 5 to 60 molar % of the quinonediazide structure in the photosensitive layer of imagewise exposed areas is photo- decomposed to form a latent image, and subsequently the treatment with base is effected before or at the same time of development and at least silicone rubber layer in image areas is removed by the development, thereby obtaining a positive working dry planographic printing plate.
Claim 18
Dependent Claim
83 words
The process of claim-12 wherein the imagewise exposure is effected through a negative original to the extent that at least 70 molar % of the quinonediazide structure in the photosensitive layer of imagewise exposed areas is photo- decomposed to form a latent image, and subsequently the treatment with base is effected before or at the same time of development and at least the silicone rubber layer in the image is removed by the development, thereby producing a negative working dry planographic printing plate.
References Cited (Backward Citations)
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