Polymeric master plate and method
Abstract
Abstract THE INVENTION DISCLOSED IS FOR A METHOD OF PREPARING A POLYMERIC MASTER PLATE HAVING HIGH PHYSICAL STRENGTH AND HARDNESS CHARACTERISTICS BY USING A PHOTOCURABLE COMPOSITION FORMED OF A PARTICULAR POLYENE COMPLEX CONTAINING AT LEAST TWO -ENE OR -YNE FUNCTIONALITY GROUPS PER MOLECULE; AND A POLYTHIOL. THE POLYMERIC MASTER PLATE IS PREPARED BY SELECTIVELY INSOLUBILIZING PORTIONS OF THE PHOTOCURABLE COMPOSITION BY EXPOSURE TO ACTINIC RADIATION AFTER WHICH UNCURED PORTIONS OF THE COMPOSITION ARE REMOVED FROM THE INSOLUBILIZED PORTIONS TO PROVIDE ULTIMATELY A MASTER PLATE USEFUL FOR DUPLICATING PRINTING PLATES. A NEW, EFFICIENT METHOD FOR PREPARING PRINTING PLATES USING THE PRESENT POLYMERIC MASTER PLATE IS ALSO DISCLOSED.
Inventors
- 👤 Clifton L Kehr
- 👤 Walter R Wszolek
- 👤 Frank X Weber
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |