Patent ID: 7041429

Claim:
A light sensitive composition comprising an addition polymerizable ethylenically unsaturated monomer, a photopolymerization initiator, and a polymer binder, wherein the photopolymerization initiator is comprised of an iron-arene compound and a trihalomethyl group-containing oxadiazole compound represented by the following formula 1, wherein R 1 and R 2 independently represent a chemical bond, or a divalent group selected from a substituted or unsubstituted alkylene group, a substituted or unsubstituted alkyleneoxy group, an ether group, a carbonyl group, an ester group, a carbonylamino group or a sulfonylamino group, provided that R 1 and R 2 may be the same or different; X represents a chlorine atom or a bromine atom; Y represents a hydrogen atom or a substituted or unsubstituted alkyl group with a carbon atom number of from 1 to 8; and n is 2 or 3.