Plasma-jet imaging apparatus and method
US5272979A · kind A · utility
9Cited by
12References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1992 |
| Grant date | Dec 28, 1993 |
| Priority date | — |
| Expiry date | Apr 30, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41C1/1033
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of and apparatus for imaging a lithographic plate having a printing surface by exposing the printing surface to plasma jet discharges between the plate and a plasma jet nozzle spaced close to the printing surface of the plate. These plasma jet discharges are sufficient to ablate or otherwise transform one or more layers of the printing surface, thereby changing the affinity of the printing surface for ink and/or water at the points thereof exposed to the discharges so as to produce image spots on the plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.