Developer for PS plate requiring no dampening water

Details Developer for PS plate requiring no dampening water Developer for PS plate requiring no dampening water

1991-02-06

1993-07-27

McCamish, Marion E.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making printing plates

430309, 430331, 430272, 1014631, 101467, G03F 730, G03F 732

Patent

active

052309894

ABSTRACT:
A developer for a presensitized plate for use in making a lithographic printing plate requiring no dampening water comprises: (1) 1 to 39% by weight of at least one alcohol derivative selected from the group consisting of those represented by the following general formula (I): ##STR1## (wherein R.sup.1 represents an alkyl or alkenyl group having 4 to 12 carbon atoms; R.sup.2 represents a hydrogen atom or a methyl group; and n is an integer ranging from 1 to 6); (2) 1 to 39% by weight of at least one water-soluble organic solvent having a boiling point of not less than 100.degree. C.; and (3) 60 to 98% by weight of water. If this developer is used, foaming is hardly caused during the development processing a PS plate requiring no dampening water, it has excellent developing ability and half tone dot reproduction and can provide an excellent lithographic printing plate free of defects such as scratch marks.

REFERENCES:
patent: 4378423 (1983-03-01), Suezawa et al.
patent: 4535054 (1985-08-01), Brault et al.
patent: 4587203 (1986-05-01), Brault et al.
patent: 4878986 (1989-11-01), Nishikawa
patent: 4959296 (1990-09-01), Yoshida et al.
patent: 5102573 (1992-04-01), Han et al.

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