Heat mode sensitive imaging element for making positive working printing plates
US6489079B1 · kind B1 · utility
4Cited by
14References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1999 |
| Grant date | Dec 3, 2002 |
| Priority date | — |
| Expiry date | Sep 8, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/165
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
According to the present invention there is provided a heat mode imaging element for making a lithographic printing plate comprising 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 which top layer is IR-sensitive and unpenetrable for an alkaline developer wherein said first layer and said top layer may be one and the same layer; characterized in that said top layer contains at least one blockcopolymer in an amount between 0.5 and 500 mg/m2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.