Developer with hydroxyaryl fatty acid for making lithographic pr

Details Developer with hydroxyaryl fatty acid for making lithographic pr Developer with hydroxyaryl fatty acid for making lithographic pr

1990-03-27

1991-11-26

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...

430248, 430251, 430429, 430486, 430487, 430493, G03C 554

Patent

active

050681648

ABSTRACT:
The present invention provides a developer for making a lithographic printing plate by silver complex diffusion transfer process which contains a hydroxyaryl fatty acid. This hydroxyaryl fatty acid preferably has the formula: ##STR1## wherein R.sub.1 represents a straight chain alkyl group of 1-19 carbon atoms and R.sub.2 represents a straight chain alkylene group of 1-19 carbon atoms with a proviso that sum of carbon atoms of R.sub.1 and R.sub.2 is 10-20 and R.sub.3 and R.sub.4 each represents a hydrogen atom, a hydroxyl group or an alkyl or alkoxy group of 1-9 carbon atoms.

REFERENCES:
patent: 3870479 (1975-03-01), Kubotera et al.
patent: 4297429 (1981-10-01), Kanada et al.
patent: 4297430 (1981-10-01), Kanada et al.
patent: 4355090 (1982-10-01), Yamada et al.
patent: 4362811 (1982-12-01), Iguchi et al.

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