| 摘要 |
PURPOSE:To provide clear contrast between the exposed part and unexposed part and give sufficient sensitivity, by containing photo-polymerizing or photo-crosslinking ethylenic unsaturated compound, and specific free radical producing agent, sensitizer and dye precursor. CONSTITUTION:A photosensitive resin composition used in PS plate, etc. is prepared by containing a free radical producing agent of formula I (X1 to X3 are H, Cl, Br, and more than one being Cl, Br; Y is represented by formula II, where X1 to X3 are the same as above, and -NH2, -NHR', -SR', OR', or -R', and R' is alkyl, aryl, alkenyl), a compound of formula III [Z is a nonmetallic atom group necessary for formation of heterocyclic uncleus containing nitrogen, R1 is a (substituted) alkyl; R2 is alkyl, (substituted) aryl], a dye precursor to color the dye by free radical or by acid, and photo-polymerizing or photo-crosslinking ethylenic unsaturated compound. Thus, the sharpness of the image and sensitivity may be enhanced.
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