Thermally reactive infrared absorption polymers and their use in a heat sensitive lithographic printing plate
US8632947B2 · kind B2 · utility
33Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2005 |
| Grant date | Jan 21, 2014 |
| Priority date | — |
| Expiry date | Oct 1, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41C2210/262
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention provides a near infrared absorption polymer comprising at least two different pendent infra-red chromophoric moieties covalently bonded to the backbone of an alkali-soluble resin, at least one of which is an indole cyanine dye and the other of which is a benz[e]-indole cyanine dye. When used in the coating of a heat sensitive positive working lithographic printing plate precursor the stabilization time needed after manufacture is significantly reduced, avoiding further conditioning processes before use. The precursors are preferably imagewise exposed with a near-infrared laser emitting at between 780 nm and 850 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.