Imaging member containing heat sensitive hyperbranched polymer and methods of use
US6162578A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1998 |
| Grant date | Dec 19, 2000 |
| Priority date | — |
| Expiry date | Dec 18, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41C1/1041
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An imaging member is composed of a heat-sensitive imaging layer having a heat-sensitive hyperbranched polymer containing heat-sensitive active end groups, and optionally a photothermal conversion material. Upon application of energy that generates heat, such as from IR irradiation, the polymer is rendered either more hydrophobic or hydrophilic depending upon the type of heat-sensitive active end groups present in the polymer. The exposed imaging member can be contacted with a lithographic printing ink and used for printing with or 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.