Processless lithographic printing plate
US6790595B2 · kind B2 · utility
0Cited by
16References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2001 |
| Grant date | Sep 14, 2004 |
| Priority date | — |
| Expiry date | Jan 31, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/146
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A negative-working heat-sensitive material for making a lithographic printing plate by direct-to-plate recording is disclosed. The material comprises in the order given a lithographic base having a hydrophilic surface, an oleophilic imaging layer and a cross-linked hydrophilic upper layer which comprises an organic compound derived from sulfonic acid, sulfuric acid, phosphoric acid or phosphonic acid. Materials according to the invention are characterized by an increased water-acceptance in the non-printing areas, which allows a rapid start-up of the press.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.