Processless imaging member containing heat sensitive sulfonate polymer and methods of use
US6413694B1 · kind B1 · utility
8Cited by
28References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1999 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | Nov 1, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41C1/1041
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A positive-working imaging member is composed of a heat-sensitive surface imageable layer having a heat-sensitive polymer containing heat-activatable sulfoimino, sulfoalkyl, or sulfoamide groups, and a photothermal conversion material. Upon application of thermal energy, such as from IR irradiation, the sulfonate groups decompose rendering exposed areas more hydrophilic. The exposed imaging member can be contacted with a lithographic printing ink and used for printing without post-imaging wet processing. This imaging member is particularly useful for direct write imaging using IR lasers or thermal printing heads.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.