US3259061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lithographic printing plates and methods of preparing same
Assignee: Warren SD Co
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Filing: 1964-03-11
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Granted: 1966-07-05
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Expires: 1984-03-11
Abstract
No abstract record available.
Inventors
- 👤 Charles M Wiswell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:13
CPC Classifications
B; B41; B41C; B41C1/00; B41C1/10; B41C1/1091
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
107 words
PROCESS WHICH COMPRISES (1) POSITIONING ADJACENT TO AND FACE-TO-FACE WITH A SURFACE OF A SHEET BEARING A HEAT ABSSORPTIVE IMAGE UPON A LESS HEAT-ABSORPTIVE BACKGROUND, A FLEXIBLE SHEET BEARING A LAYER OF "DELAYER-TACK" RESINOUS COMPOSITION; (2) IRRADICATING SAID IMAGE WITH INFRA-RED RAYS UNTIL SAID IMAGE HAS ABSORBED SUFFICIENT HEAT TO SOFTEN AND RENDER TACKEY IN THE "DELAYED-TACK" RESINOUS COMPOSITION ADJACENT THERETO A CORRESPONDING INVERTED IMAGE; (3) COOLING SAID INVERTED IMAGE BELOW THE INITIAL FUSION TEMPERATURE OF SAID COMPOSITION; AND (4) POSITIONING SAID TACKY INVERTED IMAGE IN FACE-TO-FACE CONTACT WITH A LITHOGRAPHIC PLATE TO TRANSFER SAID TACKY INVERTED IMAGE TO SAID LITHOGRAPHIC PLATE AS A DIRECT OLEOPHILIC IMAGE.
Claim 2
Dependent Claim
107 words
PROCESS WHICH COMPRISES (1) POSITIONING ADJACENT TO AND FACE-TO-FACE WITH A SURFACE OF A SHEET BEARING A HEAT ABSSORPTIVE IMAGE UPON A LESS HEAT-ABSORPTIVE BACKGROUND, A FLEXIBLE SHEET BEARING A LAYER OF "DELAYER-TACK" RESINOUS COMPOSITION; (2) IRRADICATING SAID IMAGE WITH INFRA-RED RAYS UNTIL SAID IMAGE HAS ABSORBED SUFFICIENT HEAT TO SOFTEN AND RENDER TACKEY IN THE "DELAYED-TACK" RESINOUS COMPOSITION ADJACENT THERETO A CORRESPONDING INVERTED IMAGE; (3) COOLING SAID INVERTED IMAGE BELOW THE INITIAL FUSION TEMPERATURE OF SAID COMPOSITION; AND (4) POSITIONING SAID TACKY INVERTED IMAGE IN FACE-TO-FACE CONTACT WITH A LITHOGRAPHIC PLATE TO TRANSFER SAID TACKY INVERTED IMAGE TO SAID LITHOGRAPHIC PLATE AS A DIRECT OLEOPHILIC IMAGE.
Claim 3
Dependent Claim
29 words
A LITHOGRAPHIC PRINTING PLATE MADE BY THE PROCESS DEFINED IN CLAIM 1 AND CONSISTING ESSENTIALLY OF A LITHOGRAPHIC MASTER AND AN IMAGE THEREON CONSISTING OF A "DELAYED-TACK" RESINOUS COMPOSITION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |