Thermal imaging composition and member and methods of imaging and printing
US7022461B2 · kind B2 · utility
2Cited by
6References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2003 |
| Grant date | Apr 4, 2006 |
| Priority date | — |
| Expiry date | Dec 8, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/165
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An imaging member, such as a negative-working printing plate or on-press cylinder, has an imaging layer comprised of a thermally sensitive compound and a photothermal conversion material. The thermally sensitive compound comprises a heat-activatable bisulfite adduct and can be a polymer or a small molecule compound. In the imaging member, the thermally sensitive compound reacts to provide increased hydrophobicity in areas exposed to energy that provides or generates heat. The imaging layer is considered “switchable” and can be used to provide a lithographic printing image without traditional alkaline wet processing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.