Light sensitive planographic printing plate precursor and its processing method
AssigneeKonica Corporation
InventorKazuhiko Hirabayashi
Life of this patent
Estimating the term…
Abstract
Disclosed are a light sensitive planographic printing plate precursor and its processing method, the precursor comprising a hydrophilic support and provided thereon, a photopolymerizable light sensitive layer containing a compound represented by the following formula (1) or (2) and a compound represented by the following formula (3) or (4):
Claims6
1-8. (canceled)
A light sensitive planographic printing plate precursor comprising a hydrophilic support and provided thereon, a photopolymerizable light sensitive layer containing a first compound represented by the following formula (1) or (2) and a sensitizing dye having an absorption maximum in the wavelength regions of from 350 to 450 nm,
- wherein Q1 represents
- or —S—;
- R4 represents an alkyl group, a hydroxy alkyl group, or an aryl group;
- R1 and R2 independently represent a hydrogen atom, an alkyl group, or an alkoxyalkyl group;
- R3 represents a hydrogen atom, a methyl group, or a methyl group;
- X1 represents a divalent linkage group having a carbon atom number of from 2 to 12;
- X2 represents a divalent linkage group, a trivalent linkage group, a tetravalent linkage group, or
- in which Z represents a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, a halogen atom, an alkoxy group, or a heterocyclic group, p is an integer of from 1 to 4, and q is an integer of from 1 to 3;
- D1 and D2 independently represent a divalent linkage group having a carbon atom number of from 1 to 5;
- E represents an alkylene group having a carbon atom number of from 2 to 12 or an arylene group having a carbon atom number of from 6 to 12;
- a is an integer of from 1 to 4;
- b is 0 or 1;
- c is an integer of from 1 to 3;
- m is an integer of from 2 to 4;
- and n is an integer of from 1 to m, provided that plural groups having the same definition may be the same or different,
- wherein Q2 represents
- R8 represents an alkyl group, a hydroxy alkyl group, or an aryl group;
- R5 and R6 independently represent a hydrogen atom, an alkyl group, or an alkoxyalkyl group;
- and R7 represents a hydrogen atom, a methyl group, or a methyl group;
- D3 and D4 independently represent a divalent saturated hydrocarbon group having a carbon atom number of from 1 to 5;
- F represents an alkylene group having a carbon atom number of from 2 to 12 or an arylene group having a carbon atom number of from 6 to 12;
- d and e independently represent an integer of from 1 to 4;
- g is an integer of from 2 to 4;
- and f is an integer of from 1 to g, provided that plural groups having the same definition may be the same or different.
Dependencies are inferred from the claim text.