Lithographic printing plate having dual photosensitive layering
US4233390A · kind A · utility
15Cited by
11References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 20, 1979 |
| Grant date | Nov 11, 1980 |
| Priority date | — |
| Expiry date | Jul 20, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/0955
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for preparing aluminum based lithographic printing plates which comprises treating at least one surface of an aluminum base sheet with lithographically suitable, photosensitive, preferably water-soluble, diazo composition and then applying to said surface a lithographically suitable photopolymerizable composition to yield the desired photosensitive lithographic printing plate of improved characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.