Apparatus and method for imaging lithographic printing plates using spark discharges
US5235914A · kind A · utility
7Cited by
24References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 18, 1992 |
| Grant date | Aug 17, 1993 |
| Priority date | — |
| Expiry date | Feb 18, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41P2235/23
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Apparatus and method for imaging a lithographic plate having a metal first layer and a second layer underlying the metal layer, the first and second layers exhibiting different affinities for fountain solution and/or ink. Selective removal of the first layer in an imagewise pattern reveals the second layer, resulting in direct production of image spots. The plate is ready for printing at the conclusion of the imaging process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.