PHOTOSENSITIVE COMPOSITION, PHOTOSENSITIVE FILM, PHOTOSENSITIVE LAMINATE, METHOD OF FORMING PERMANENT PATTERN AND PRINTED BOARD

摘要

A photosensitive composition that by the use of an oxime derivative and a specified sensitizer, realizes good sensitivity and excellent raw storability; a relevant photosensitive film; a method of forming a permanent pattern with the use of the photosensitive composition; and a printed board having a permanent pattern formed according to the permanent pattern forming method. There is provided a photosensitive composition comprising a binder, a polymerizable compound, a photopolymerization initiator and a thermal crosslinking agent, wherein in the exposure and development of formed photosensitive layer, the variation coefficient of the formula log<SUB>10</SUB>(E<SUB>1</SUB>/E<SUB>0</SUB>) falls within ±0.3. In the formula, E<SUB>1</SUB> refers to the minimum energy of light for use in exposure that in the process of superimposing a photosensitive layer on a substratum, hermetically sealing the same in an atmosphere of 24°C 60% RH, and storing it at 40°C for 3 days, followed by exposure and development, causes no change to the thickness of area to be exposed of the photosensitive layer after the exposure and development, and E<SUB>0</SUB> refers to the corresponding minimum energy of light for use in exposure after storage in dark place at 24°C for 30 min.