PHOTOSENSITIVE COMPOSITION, PHOTOSENSITIVE COMPOSITION FOR BLUE-VIOLET LASER, IMAGE-FORMING BASE MATERIAL USING THE SAME, IMAGE-FORMING MATERIAL AND IMAGE-FORMING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a photosensitive composition which is highly sensitive to laser light, particularly to laser light from ultraviolet to blue-violet, and is excellent in long-term storage stability and adhesion to a substrate, wherein the photosensitive composition is suitably used as a solder resist or a dry film, and in particular it is suitable for direct drawing using laser light from ultraviolet to blue-violet.

SOLUTION: The photosensitive composition contains (A) an ethylenically unsaturated group-containing compound, (B) a photopolymerization initiator and (C) an alkali-soluble resin, wherein the photopolymerization initiator (B) contains a photopolymerization initiator having a specific structure and an average particle diameter of 0.001-150 μm.

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