Laser-imageable printing members and methods for wet lithographic printing
US5493971A · kind A · utility
47Cited by
33References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1994 |
| Grant date | Feb 27, 1996 |
| Priority date | — |
| Expiry date | Apr 13, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41C1/1033
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
PA1 Lithographic printing constructions and methods of imaging them. The constructions include a grained-metal substrate, a protective layer that can also serve as an adhesion-promoting primer, and an ablatable oleophilic surface layer. In operation, imagewise pulses from an imaging laser interact with the surface layer, causing ablation thereof and, probably, inflicting some damage to the underlying protective layer as well. The imaged plate may then be subjected to a solvent that eliminates the exposed protective layer, but which does no damage either to the surface layer or to the unexposed protective layer lying thereunder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.