Method for making a negative working lithographic printing plate
US4447512A · kind A · utility
6Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 25, 1982 |
| Grant date | May 8, 1984 |
| Priority date | — |
| Expiry date | Jan 25, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/111
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An O-epoxyalklyated tetrakis (hydroxyphenyl) alkane resin or the esterified reaction product of about one equivalent thereof with less than one equivalent of an ethylentically unsaturated organic acid can be combined with an aqueous alkali- and radiation sensitive, negative acting substance which when coated on a substrate forms a radiation sensitive negative working element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.