US4304836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surlay proofing method
Assignee: CNA Holdings LLC
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Filing: 1977-06-03
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Granted: 1981-12-08
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Expires: 1997-06-03
Abstract
Abstract A process for making a multicolored reproduction combining overlay and surprint characteristics in which a photohardenable layer, such as a photopolymerizable layer, is cast on a semi-rigid, transparent, support film, the photohardenable layer is exposed in an appropriate exposure unit through a color negative representing one color, the exposed layer is developed to remove the unexposed areas and leave the exposed image areas, an adhesive layer, such as an acrylic adhesive, is coated on a release sheet, the coated release sheet is contacted with a receptor sheet at a temperature and pressure sufficient to transfer the adhesive to the sheet, the developed layer is contacted with the adhesive coated sheet at a temperature and pressure sufficient to transfer the image areas to the sheet and the steps of casting a photohardenable layer, exposing the layer, developing the layer and contacting the image areas with the sheet is repeated for each additional color desired.
Inventors
- 👤 Zafarullah K. Cheema
- 👤 Oliver A. Barton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:04
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/26; G03F7/34; G03F3/00; G03F3/10; G03F3/106
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
225 words
A method of making a multicolored reproduction consisting essentially of exposing a single photopolymerizable layer comprising a mixture of at least one macromolecular binder with pendant acid groups and a first preselected color on a support sheet to light through a color separation negative for said first color, treating the exposed layer with a developing solution and removing the non-light-struck, non-image areas of said layer while leaving said light-struck image areas of said layer on said support sheet, transferring said image areas by contacting said image areas on said support sheet with a receptor sheet, one of said support sheet with image areas thereon or said receptor sheet having a layer of transparent to slightly translucent hot melt adhesive thereon comprising an acrylic polymer or copolymer, said transfer being effected at a temperature sufficient to soften said adhesive and said image areas, and under a pressure sufficient to adhere said image areas to said receptor sheet, removing said support sheet, and repeating the steps at least once of exposing a single photopolymerizable layer, of one other preselected color, treating said layer with a developing solution, and transferring said image areas of said layer to said receptor sheet without additional adhesive to superimpose the image areas of said other color directly onto said receptor sheet carrying said image areas of said layer of said first color.
Claim 2
Independent Claim
225 words
A method of making a multicolored reproduction consisting essentially of exposing a single photopolymerizable layer comprising a mixture of at least one macromolecular binder with pendant acid groups and a first preselected color on a support sheet to light through a color separation negative for said first color, treating the exposed layer with a developing solution and removing the non-light-struck, non-image areas of said layer while leaving said light-struck image areas of said layer on said support sheet, transferring said image areas by contacting said image areas on said support sheet with a receptor sheet, one of said support sheet with image areas thereon or said receptor sheet having a layer of transparent to slightly translucent hot melt adhesive thereon comprising an acrylic polymer or copolymer, said transfer being effected at a temperature sufficient to soften said adhesive and said image areas, and under a pressure sufficient to adhere said image areas to said receptor sheet, removing said support sheet, and repeating the steps at least once of exposing a single photopolymerizable layer, of one other preselected color, treating said layer with a developing solution, and transferring said image areas of said layer to said receptor sheet without additional adhesive to superimpose the image areas of said other color directly onto said receptor sheet carrying said image areas of said layer of said first color.
Claim 3
Dependent Claim
36 words
A method in accordance with claim 1 wherein the photopolymerizable layers contain: (a) at least one multi-functional, unsaturated compound capable of forming a polymer by addition polymerization; and (b) an addition polymerization initiator activated by radiation.
Claim 4
Dependent Claim
16 words
A method in accordance with claim 2 wherein the photopolymerizable layers additionally contain a hydrogen donor.
Claim 5
Dependent Claim
16 words
A method in accordance with claim 1 wherein the photopolymerizable layers are colored with a pigment.
Claim 6
Dependent Claim
16 words
A method in accordance with claim 1 wherein the photopolymerizable layers are colored with a dye.
Claim 7
Dependent Claim
13 words
A method in accordance with claim 1 wherein the receptor sheet is paper.
Claim 8
Dependent Claim
14 words
A method in accordance with claim 1 wherein the receptor sheet is a plastic.
Claim 9
Dependent Claim
15 words
A method in accordance with claim 1 wherein the receptor sheet is a plastic-paper laminate.
Claim 10
Dependent Claim
15 words
A method in accordance with claim 1 wherein the receptor sheet is a metal foil.
Claim 11
Dependent Claim
35 words
A method in accordance with claim 1 wherein the receptor sheet is coated with a single layer of the adhesive prior to contact with the image areas of the layer of the first color only.
Claim 12
Dependent Claim
43 words
A method in accordance with claim 1 wherein the side of the support sheet carrying the light-struck, image areas of the layer of the first color only is coated with a single layer of the adhesive prior to contact with the receptor sheet.
Claim 13
Dependent Claim
26 words
A method in accordance with claim 1 wherein each of the photopolymerizable layers is overcoated with a single, oxygen barrier layer soluble in the developing solution.
Claim 14
Dependent Claim
15 words
A method in accordance with claim 12 wherein the oxygen barrier layer is polyvinyl alcohol.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-07 | 1985-06-08 | 1985-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-07 | 1989-06-08 | 1989-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-07 | 1993-06-08 | 1993-12-08 | $7700.00 | Window Closed / Lapsed |