Method for making lithographic printing plate
US5756251A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1996 |
| Grant date | May 26, 1998 |
| Priority date | — |
| Expiry date | Dec 11, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/07
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is a method for making a lithographic printing plate from a photographic element according to the silver complex diffusion transfer process employing a coating development process with a small amount of developer, wherein the coating amount of the developer is 60 ml or less per 1 m.sup.2 of the photographic element and the developer contains a mercaptooxadiazole having an alkyl group of 4 or more carbon atoms or aryl group and an alkanolamine and/or a meso-ionic compound. The resulting lithographic printing plate has a high printing endurance and free from stains on the background in spite of carrying out the development by a coating method with a small amount of the developer for a short period of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.