US3884693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive transfer material
Assignee: Hoechst AG
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Filing: 1972-05-08
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Granted: 1975-05-20
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Expires: 1992-05-08
Abstract
Abstract This invention relates to a light-sensitive transfer material comprising a support, a light-sensitive thermoplastic layer, and a thin intermediate release layer which does not become tacky when heated at temperatures up to 150*C. and has a greater adhesion to said light-sensitive layer than to said support.
Inventors
- 👤 Sigrid Bauer
- 👤 Helga Sikora
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:43
CPC Classifications
G; G03; G03F; G03F3/00; G03F3/10; G03C; G03C1/00; G03C1/74; G03F7/00; G03F7/004; G03F7/09; G03F7/092
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
50 words
LIGHT-SENSITIVE TRANSFER MATERIAL COMPRISING A SUPPORT, A LIGHT-SENSITIVE THERMOPLASTIC LAYER, AND A THIN INTERMEDIATE RELEASE LAYER OF LOW PERMEABILITY TO THE OXYGEN OF THE AIR WHICH DOES NOT BECOME TACKY WHEN HEATED AT TEMPERATURES UP TO 150*C. AND HAS A GREATER ADHESION TO SAID LIGHT-SENSITIVE LAYER THAN TO SAID SUPPORT.
Claim 2
Dependent Claim
50 words
LIGHT-SENSITIVE TRANSFER MATERIAL COMPRISING A SUPPORT, A LIGHT-SENSITIVE THERMOPLASTIC LAYER, AND A THIN INTERMEDIATE RELEASE LAYER OF LOW PERMEABILITY TO THE OXYGEN OF THE AIR WHICH DOES NOT BECOME TACKY WHEN HEATED AT TEMPERATURES UP TO 150*C. AND HAS A GREATER ADHESION TO SAID LIGHT-SENSITIVE LAYER THAN TO SAID SUPPORT.
Claim 3
Dependent Claim
18 words
Material according to claim 1 including a strippable cover sheet on the free surface of said light-sensitive layer.
Claim 4
Dependent Claim
19 words
Material according to claim 1, in which the release layer has a thickness of 0.1 to 5 Mu m.
Claim 5
Dependent Claim
20 words
Material according to claim 1, in which the release layer is soluble or swellable in aqueous or aqueous alkaline solutions.
Claim 6
Dependent Claim
15 words
Material according to claim 1, in which the release layer is a film-forming organic substance.
Claim 7
Dependent Claim
32 words
Material according to claim 5, in which the release layer is a high-polymer organic substance with an aliphatic chain which contains no more than 50 per cent of units with aromatic substituents.
Claim 8
Dependent Claim
15 words
Material according to claim 1, in which the light-sensitive thermoplastic layer is a photopolymer layer.
Claim 9
Dependent Claim
24 words
Material according to claim 1, in which the light-sensitive thermoplastic layer contains from 1 to 30 percent by weight of a dye or pigment.
Claim 10
Dependent Claim
13 words
Material according to claim 1, in which the release layer is polyvinyl alcohol.
Claim 11
Dependent Claim
12 words
Material according to claim 1, in which the release layer is gelatin.
Claim 12
Dependent Claim
14 words
Material according to claim 1, in which the release layer contains a wetting agent.
Claim 13
Dependent Claim
89 words
A process for the production of a copy on a support which comprises laminating the support, with heating, to a free surface of a thermoplastic light-sensitive layer on a temporary support, stripping said temporary support, and image-wise exposing and developing said lightsensitive layer, said light-sensitive layer and temporary support having a thin intermediate release layer of low permeability to the oxygen of the air which does not become tacky when heated at temperatures up to 150*C and has a greater adhesion to said light-sensitive layer than to said support.
Claim 14
Dependent Claim
89 words
A process for the production of a copy on a support which comprises laminating the support, with heating, to a free surface of a thermoplastic light-sensitive layer on a temporary support, stripping said temporary support, and image-wise exposing and developing said lightsensitive layer, said light-sensitive layer and temporary support having a thin intermediate release layer of low permeability to the oxygen of the air which does not become tacky when heated at temperatures up to 150*C and has a greater adhesion to said light-sensitive layer than to said support.
Claim 15
Dependent Claim
28 words
A process according to claim 12, in which the light-sensitive layEr is a photoresist layer and the final support is etched or electroplated after development of the image.
Claim 16
Dependent Claim
68 words
A process according to claim 12, including laminating the first of a set of light-sensitive layers in the three or four primary colors to a final support, exposing it under the appropriate color separation of a multi-color image, and developing it to form a first color separation copy, and then producing the other color separation copies on the same final support by lamination, exposure in register, and development.
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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) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |