EP 0029720 A1 19810603 - The development of lithographic films.
Title (en)
The development of lithographic films.
Title (de)
Entwicklung lithographischer Filme.
Title (fr)
Développement de pellicules lithographiques.
Publication
Application
Priority
- GB 7940427 A 19791122
- GB 7942865 A 19791212
- GB 7943117 A 19791214
Abstract (en)
A lithographic development process in which a lithographic film (6) is contacted separately and in either order with two aqueous baths: bath (A) containing a developing agent and having a pH of from 2.5 to 7.0 such that development will not occur when the film is contacted solely with the bath, and bath (B) having a pH of at least 9 such that when the film is contacted with the baths development will occur, the bath (A) and/or bath (B) containing one or more contrast controlling agents in an amount of from 0.002 g/l to 10.0 g/l. Suitable contrast controlling agents are certain types of antifoggant compounds, for example 5-nitroindazole, 6-nitrobenzimidazole, 5-methylbenzotriazole, 5-nitrobenzotriazole, 5,6-dinitrobenzimidazole and benzotriazole.
IPC 1-7
IPC 8 full level
G03C 5/29 (2006.01)
CPC (source: EP)
G03C 5/29 (2013.01)
Citation (search report)
[X] GB 1469763 A 19770406 - MINNESOTA MINING & MFG
Designated contracting state (EPC)
BE DE FR GB IT SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 80304178 A 19801121; DK 497280 A 19801121