Patent ID: 7771916
Filing Date: 2010-08-10
Classification: B41C,C08F,Y10S

Abstract:
1. A negative planographic printing plate precursor, comprising a substrate, a recording layer and a protective layer on the recording layer; wherein the recording layer contains a polymerizable composition comprising (A) a compound represented by the following formula (I), of which a value of log P defined by the following numerical formula is 2.00 or more, (B) an infrared absorbent, and (C) a compound having at least one addition-polymerizable ethylenically unsaturated bond: wherein R log P=log(Coil/Cwater); Coil: a molar concentration in an organic phase at an equilibrium state; Cwater: a molar concentration in an aqueous phase at an equilibrium state; Oil: 1-octanol.