An imaging composition is disclosed comprised of an organic component containing ethylenic unsaturation sites and capable of selective hardening by addition at the sites of ethylenic unsaturation, an azinium salt activator, a photosensitizer having a reduction potential which in relation to the reduction potential of the azinium salt activator is at most 0.1 volt more positive, and an image enhancing amount of benzene substituted with an electron donating amino group and one or more groups capable of imparting a net Hammett sigma value electron withdrawing characteristic of at least +0.20 volt to said benzene ring.
本发明公开了一种成像组合物,该组合物由含有
乙烯不饱和位点并能通过在
乙烯不饱和位点上的加成而选择性硬化的有机组分、唑盐活化剂、具有相对于唑盐活化剂的还原电位至多正 0.1 伏的还原电位的光敏剂、以及被供电子
氨基和一个或多个能赋予净哈密特西格玛值电子撤回特性至少+0.20 伏的净哈密特西格玛值电子撤回特性的基团取代的苯的图像增强量组成。1伏特的光敏剂,以及用一个电子供体
氨基和一个或多个能赋予所述苯环至少+0.20伏特的净哈密特西格玛值电子撤回特性的基团取代的苯的图像增强量。