Patent ID: 7935473

Claim:
A photosensitive composition comprising: a cyanine dye that has, on a methine chain thereof, a substituent which is a cation moiety of an onium salt structure, wherein the cyanine dye is represented by a general formula (3): wherein R 1 and R 8 each independently represents a hydrocarbon group which may have a substituent; R 2 , R 3 , R 4 , R 5 , R 6 , and R 7 each independently represents a hydrogen atom or a hydrocarbon group; R 4 and R 5 may be connected to each other to form a ring which may have a substituent; X represents a single bond or a linking group; Q 1 and Q 2 each independently represents —NR 9 —, S, O, —CH═CH—, or a dialkylmethylene group; R 9 represents a hydrogen atom or a hydrocarbon group which may have a substituent; Y + represents a substituent having a cation moiety of an onium salt structure represented by any one of general formulae (5), (6) and (8): wherein R 20 to R 44 and R 50 to R 55 each independently represents a hydrogen atom, a halogen atom, or a monovalent organic group; and one of R 20 to R 29 in the general formula (5), one of R 30 to R 44 in the general formula (6), and one of R 50 to R 54 in the general formula (8) are a single bond connected to X in the general formula (3); T 1 and T 2 each independently represents an aromatic ring or a heteroaromatic ring; and A − and B − each independently represents a counter ion which exists when charge neutralization is necessary, the counter ion being selected from the group consisting of a halogen ion, a perchlorate ion, a tetrafluoroborate ion, a hexafluorophosphate ion, and a sulfonate ion.