Visible image dyes for positive-acting no-process printing plates
US5665522A · kind A · utility
27Cited by
11References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 1995 |
| Grant date | Sep 9, 1997 |
| Priority date | — |
| Expiry date | May 2, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/115
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Positive-acting no-process printing plates are disclosed in which a stable visual or print-out image is obtained upon exposure of the plate to actinic radiation. The visual image is obtained by incorporation into the photosensitive layer, a dye which is irreversibly bleached upon exposure of the printing plate. For example, an acid which is generated upon exposure of a photopolymer to radiation may be used to bleach a dye of this invention. The visual or print-out images produced are useful in the production cycle and are stable to basic environments that may be encountered in the production setting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.