Photosensitive diazo lithographic printing plate with oxalic acid as stabilizer
US4172729A · kind A · utility
8Cited by
20References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1977 |
| Grant date | Oct 30, 1979 |
| Priority date | — |
| Expiry date | Jun 28, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/0166
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photosensitive diazo composition for a pre-sensitized lithographic plate which exhibits an extended shelf life as well as improved printing performance, the composition comprising (a) a diazonium compound, (b) an organic high molecular weight binder, and (c) from about 0.1 to about 5% by weight of oxalic acid or a salt thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.