Patent ID: 8133656

Claim:
An oxime ester compound represented by general formula (I): wherein: R 1 is a halogen-substituted or unsubstituted aryl group having 6 to 30 carbon atoms; R 2 is a cyclic or acyclic, halogen-substituted or unsubstituted alkyl group having 1 to 20 carbon atoms; R 3 and R 4 each independently represent R 11 , OR 11 , CN, a halogen atom, or a hydroxyl group; R 11 represents a hydrogen atom or an alkyl group having 1 to 20 carbon atoms; a and b each independently represent 0 to 4; X represents a sulfur atom or NR 33 ; R 33 is a straight-chain, branched, or cyclic, halogen-substituted or unsubstituted alkyl group having 1 to 20 carbon atoms; and R 3 may be connected to one of the carbon atoms of the benzene rings neighboring via —X— to form a cyclic structure; or R 3 and R 4 may be connected to each other to form a ring.