Fuji Photo Film Company, Limited

Yohonosuke Takahashi

Kazuo Ishii

Fumiaki Shinozaki

Tomoaki Ikeda

Hiromichi Tachikawa

Kenichiro Yazawa

Masataka Murata

Eiichi Hasegawa

Shigeo Tanaka

A novel desensitizing solution is disclosed which is applied to the surface of a lithographic printing plate coated with a photosensitive layer of a photopolymerizable composition, the desensitizing solution contains a hydrophilic colloid, a free radical polymerization inhibitor and water.

Desensitizing solution for lithographic printing plate

A photopolymerizable composition having improved thermal stability comprising (a) a polymerizable ethylenically unsaturated monomer, (b) an initiator represented by the general formula (I): ##STR1## wherein Z represents the non-metallic atoms necessary to complete a nitrogen-containing heterocyclic nucleus; R.sup.1 represents an unsubstituted or substituted alkyl group; and R.sup.2 represents an unsubstituted or substituted alkyl group, an unsubstituted or substituted aryl group, or a thienyl group; and (c) a chlorinated polyolefin as a binder and additionally containing (d) about 1 to about 30% by weight of an epoxy compound.

Photopolymerizable composition with epoxy stabilizers

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Asaka, Japan

Yohonosuke Takahashi