Imaging member containing heat switchable polymer and method of use
US6447978B1 · kind B1 · utility
12Cited by
21References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1999 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Dec 3, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41C1/1041
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An imaging member, such as a negative-working printing plate or on-press cylinder, can be prepared using a hydrophilic imaging layer comprised of a heat-sensitive hydrophilic polymer that comprises recurring units comprising quaternary ammonium carboxylate groups. The imaging member can also include an infrared radiation sensitive material to provide added sensitivity to heat that can be supplied by laser irradiation in the IR region. The heat-sensitive polymer is considered “switchable” in response to heat, and provides a lithographic image without wet processing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.