Process for making lithographic printing plates
US5258258A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1991 |
| Grant date | Nov 2, 1993 |
| Priority date | — |
| Expiry date | Oct 10, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C8/365
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is a processing solution used for making lithographic printing plates by silver complex diffusion transfer process which contains at least one thioether derivative represented by the following formulas (I), (II) and (III): ##STR1## wherein n.sub.1 and n.sub.2 each represents 0, 1 or 2 and R.sub.1 and R.sub.2 each represents an alkylene group of 1-5 carbon atoms, ##STR2## wherein R.sub.1 represents an alkylene group of 1-5 carbon atoms, X represents a hydrogen atom, a carboxy group, an alkoxycarbonyl group, a carbamoyl group, a hydroxy group, or --OR.sup.2 in which R.sup.2 has the same meaning as --R.sub.1 --S).sub.n CH.sub.2 CH.sub.2 OH above, and n represents 0, 1 or 2, ##STR3## wherein X' represents an aromatic or heterocyclic group which has a carboxy group, R.sub.1 and R.sub.2 each represents an alkylene group of 1-5 carbon atoms and n represents 0, 1, 2 or 3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.