Patent ID: 7135271

Claim:
A positive type photosensitive composition comprising: a polymer compound (A) having, in a side chain thereof, a polymerizable group, and an infrared absorbent (B), wherein the polymer compound (A) interacts with the infrared absorbent (B), thereby exhibiting good resistance against an alkaline developer, wherein polymer compound (A) comprises, in molecules thereof, a structural unit having a polymerizable group in a side chain thereof, wherein the structural unit having a polymerizable group has a structure represented by one of the following general formulae (1) and (2): wherein A, B and X each independently represents a single bond, an oxygen atom, a sulfur atom, or —N(R 01 )—, wherein R 01 represents a hydrogen atom or a monovalent organic group; L and M each independently represents a bivalent organic group; R 1 to R 12 each independently represents a hydrogen atom or a monovalent organic group; and Y represents an oxygen atom, a sulfur atom —N(R 02 )—, wherein R 02 represents a hydrogen atom or a monovalent organic group, or a phenylene group which may have a substituent.