Method for making lithographic printing plate

Details Method for making lithographic printing plate Method for making lithographic printing plate

1996-12-11

1998-05-26

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Transfer procedure between image and image layer, image...

Diffusion transfer process, element, or identified image...

430249, G03F 707, G03C 806, G03C 836

Patent

active

057562512

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.

REFERENCES:
patent: 3776728 (1973-12-01), Suzuki et al.
patent: 4401739 (1983-08-01), Senga et al.
patent: 5068164 (1991-11-01), Kondo et al.
patent: 5281509 (1994-01-01), Murakawa et al.
patent: 5340691 (1994-08-01), Vaes et al.
patent: 5398092 (1995-03-01), Tanno et al.

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