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US4504571A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of peel development

Assignee: Nitto Denko Corp
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Filing: 1984-03-30
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Granted: 1985-03-12
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Expires: 2004-03-30
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Abstract

Abstract A method of peel development comprising laminating an image-forming material comprising a transparent support and a photopolymerizable composition layer on the surface of a substrate on which an image is formed, imagewise exposing the image-forming material, and peeling the support from the substrate together with the unexposed areas of the photopolymerizable composition layer while leaving the exposed areas thereof on the substrate, wherein the cohesive strength of the photopolymerizable composition layer is set such that the force required to separate the unexposed areas from the exposed areas is at least 1.0 kg/mm 2 and the peeling operation is performed while maintaining a peel angle (α) of the support to the substrate within the range of 0°<α≦90°. This method enables the formation of sharp images on the substrate while allowing for the easy separation of the unexposed areas from the exposed areas.

Inventors

  • 👤 Yutaka Yamamura
  • 👤 Tomomichi Kaneko
  • 👤 Shunichi Hayashi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 18:34
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/26; G03F7/34; G03F7/343; B; B29; B29C; B29C63/00; B29C63/0004; B29C63/0013; H; H05; H05K; H05K3/00; H05K3/0073; H05K3/0079; H05K2201/00; H05K2201/01; H05K2201/0104; H05K2201/0108; H05K2203/00; H05K2203/05; H05K2203/0502; H05K2203/0537

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 120 words
A method of peel development comprising: (a) laminating an image-forming material comprising a transparent support and a photopolymerizable composition layer on the surface of a substrate on which an image is formed; (b) imagewise exposing the image-forming material; and then (c) peeling away the support and the unexposed areas of the photopolymerizable composition layer from the substrate to retain the exposed areas thereof on the substrate, wherein the cohesive strength of the photopolymerizable composition layer is set such that the force required to separate the unexposed areas from the exposed areas is at least 1.0 kg/mm 2 and the peeling operation is performed while maintaining a peel angle (α) of the support to the substrate within the range of 0°<α≦90°.
Claim 2
Independent Claim 120 words
A method of peel development comprising: (a) laminating an image-forming material comprising a transparent support and a photopolymerizable composition layer on the surface of a substrate on which an image is formed; (b) imagewise exposing the image-forming material; and then (c) peeling away the support and the unexposed areas of the photopolymerizable composition layer from the substrate to retain the exposed areas thereof on the substrate, wherein the cohesive strength of the photopolymerizable composition layer is set such that the force required to separate the unexposed areas from the exposed areas is at least 1.0 kg/mm 2 and the peeling operation is performed while maintaining a peel angle (α) of the support to the substrate within the range of 0°<α≦90°.
Claim 3
Dependent Claim 16 words
The method of claim 1, wherein the peel angle (α) is within the range of 60°≦α≦90°.
Claim 4
Dependent Claim 15 words
The method of claim 1, wherein the force is 1.0 to 2.0 kg/mm 2 .

References Cited (Backward Citations)

US3794546A Cited
US4357413A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-03-11 1988-09-10 1989-03-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-03-11 1992-09-10 1993-03-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-03-11 1996-09-10 1997-03-12 $7700.00 Window Closed / Lapsed

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