Patent US3238042A successfully refreshed from Google Patents.
US3238042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing a planographic printing plate
Assignee: Kalle GmbH and Co KG
•
Filing: 1964-11-12
•
Granted: 1966-03-01
•
Expires: 1984-11-12
Abstract
No abstract record available.
Inventors
- 👤 Dr Fritz Uhlig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:58
CPC Classifications
A; A01; A01D; A01D87/00; A01D87/0038; B; B41; B41N; B41N3/00; B41N3/08; C; C09; C09D; C09D127/00; C09D127/02; C09D127/04; C09D127/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A PROCESS FOR PREPARING A PLANOGRAPHIC PRINTING PLATE FROM A PRESENSITIZED PRINTING PLATE COMPRISING A BASE OF ALUMINUM AND A LIGHT-SENSITIVE COATING ON SAID BASE COMPRISING AT LEAST ONE COMPOUND OF O-NAPHTHOQUINONE DIAZIDE STRUCTURE BY ILLUMINATION OF SAID LIGHT-SENSITIVE COATING WITH A WEAKLY ALKALINE AQUEOUS DEVELOPING LIQUID, INKING UP THE DEVELOPED COATING WITH GREASY INK TO OBTAIN AN INKED-UP PRINTING SURFACE, AND WIPING OVER THE INKED-UP PRINTING SURFCE WITH A DILUTE AQUEOUS SOLUTION OF A WATERSOLUBLE COLLOID, SAID DEVELOPING DISSOLVING AWAY THE LIGHTSENSITIVE COATING IN THE NON-IMAGE PARTS OF THE ILLUMINATED COATING, IN SAID INKING UP THE IMAGE PARTS OF THE DEVELOPED COATING ACCEPT AND THE NON-IMAGE PARTS DO NOT ACCEPT INK, WHICH PROCESS COMPRISES THE STEPS OF TREATING SAID INKEDUP AND WIPED OVER PRINTING SURFACE WITH A LACQUER COMPRISING AN ORGANIC LIQUID WHICH IS CAPABLE OF DISSOLVING THE INKED-UP VINYL CHLORIDE INTERPOLYMER CONTAINING CARBOXYL GROUPS, DRYING THE SURFACE AND WASHING IT WITH WATER.
Claim 2
Dependent Claim
154 words
A PROCESS FOR PREPARING A PLANOGRAPHIC PRINTING PLATE FROM A PRESENSITIZED PRINTING PLATE COMPRISING A BASE OF ALUMINUM AND A LIGHT-SENSITIVE COATING ON SAID BASE COMPRISING AT LEAST ONE COMPOUND OF O-NAPHTHOQUINONE DIAZIDE STRUCTURE BY ILLUMINATION OF SAID LIGHT-SENSITIVE COATING WITH A WEAKLY ALKALINE AQUEOUS DEVELOPING LIQUID, INKING UP THE DEVELOPED COATING WITH GREASY INK TO OBTAIN AN INKED-UP PRINTING SURFACE, AND WIPING OVER THE INKED-UP PRINTING SURFCE WITH A DILUTE AQUEOUS SOLUTION OF A WATERSOLUBLE COLLOID, SAID DEVELOPING DISSOLVING AWAY THE LIGHTSENSITIVE COATING IN THE NON-IMAGE PARTS OF THE ILLUMINATED COATING, IN SAID INKING UP THE IMAGE PARTS OF THE DEVELOPED COATING ACCEPT AND THE NON-IMAGE PARTS DO NOT ACCEPT INK, WHICH PROCESS COMPRISES THE STEPS OF TREATING SAID INKEDUP AND WIPED OVER PRINTING SURFACE WITH A LACQUER COMPRISING AN ORGANIC LIQUID WHICH IS CAPABLE OF DISSOLVING THE INKED-UP VINYL CHLORIDE INTERPOLYMER CONTAINING CARBOXYL GROUPS, DRYING THE SURFACE AND WASHING IT WITH WATER.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |