Heat mode sensitive imaging element for making positive working printing plates
US6152036A · kind A · utility
21Cited by
10References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1999 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | Mar 29, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41C2210/264
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention is directed to a heat mode imaging element for making a lithographic printing plate including on a lithographic base with a hydrophilic surface, a first layer including a polymer, soluble in an aqueous alkaline solution, and a top layer on the same side of the lithographic base as the first layer. The top layer is IR-sensitive and unpenetrable for an alkaline developer. The first layer and the top layer may be one and the same layer. The top layer is characterized in that it contains at least one compound containing epoxy units in an amount between 20 and 500 mg/m.sup.2 and a hardener.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.