"However, when a fused polycyclic aromatic group such as naphthyl, anthranyl, phenathryl or anthryl or other proper substituent is introduced as any one of R1 to R8 except for R4, or when a proper sensitizer which has been already detailed above is used in combination, the composition of the present invention acquires a very high sensitivity to light in a region of from near ultraviolet light to ne" . . . .