Method of forming a photomask for a printing plate with an ink jet
US5495803A · kind A · utility
67Cited by
7References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1994 |
| Grant date | Mar 5, 1996 |
| Priority date | — |
| Expiry date | Jul 25, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/2018
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method and apparatus for preparing a printing plate without the need for a photomask formed from a sheet of photographic film bearing the positive or negative of the image to be printed. According to the invention, an ink jet print head deposits ink onto a light-sensitive emulsion in a pattern which corresponds to either the positive or negative of the image to be printed. The printed pattern provides a photomask for subsequent exposure of the emulsion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.