Positive-working imageable elements
US7678531B2 · kind B2 · utility
1Cited by
10References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2007 |
| Grant date | Mar 16, 2010 |
| Priority date | — |
| Expiry date | Mar 10, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41C2210/266
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Positive-working imageable elements have a substrate and an imageable layer that can be used to prepare lithographic printing plates. The imageable elements also include a radiation absorbing compound, and a mixture of first and second polymers in the same imageable layer. The first polymer has two or more centered H-bonds (hydrogen bonds) within a non-covalently bonded unit, and the second polymer is a polyvinyl acetal. This mixture of polymers in the same imageable layer provides improved solvent resistance and processing latitude without a loss in imaging speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.