Photopolymerizable composition and presensitized planographic printing plate employing the same
AssigneeKonica Corporation
InventorsNoritaka Nakayama, Mitsunori Matsuura, Shinji Matsumoto
Life of this patent
Estimating the term…
Abstract
A photopolymerizable composition and a presensitized planographic printing plate employing the same are disclosed which comprise a compound having an ethylenically unsaturated bond and a dye represented by the following formula (1) or (2): ##STR1##
Claims9
A photopolymerizable composition comprising a compound having an ethylenically unsaturated bond and a dye represented by the following formula (1) or (2):
- ##STR20## wherein Z.sup.1, Z.sup.2 and Z.sup.3 independently represent --N.dbd. or --C(R.sup.2).dbd.;
- R.sup.1 and R.sup.2 independently represent a hydrogen atom, an alkyl group, an alkenyl group, an aryl group or a 5- or 6-membered heterocyclic ring residue;
- L.sup.1 and L.sup.2 independently represent a methine group;
- and B.sup.1 and B.sup.2 independently represent an aryl group or a 5- or 6-membered heterocyclic ring residue.
A presensitized planographic printing plate comprising a support and provided thereon, a light sensitive layer comprising a compound having an ethylenically unsaturated bond and a dye represented by the following formula (1) or (2):
- ##STR22## wherein Z.sup.1, Z.sup.2 and Z.sup.3 independently represent --N.dbd. or --C(R.sup.2).dbd.;
- R.sup.1 and R.sup.2 independently represent a hydrogen atom, an alkyl group, an alkenyl group, an aryl group or a 5- or 6-membered heterocyclic ring residue;
- L.sup.1 and L.sup.2 independently represent a methine group;
- and B.sup.1 and B.sup.2 independently represent an aryl group or a 5- or 6-membered heterocyclic ring residue.
Dependencies are inferred from the claim text.