OPTICALLY ACTIVE MATERIAL APPLICABLE TO IMAGE-FORMING SYSTEM

摘要

PROBLEM TO BE SOLVED: To obtain a highly photosensitive compound capable of carrying out an effective photoreaction and providing a basic material during the photoreaction. SOLUTION: An organic photoprecursor of an amine for use in a photosensitive image-forming system finding out a special use in preparation of a lithographic printing plate is obtained. The photoprecursor is capable of producing a free amine when exposed to UV at a long wavelength or visible radiations, has a high solubility in organic solvents and contains a 2-nitrobenzyl functional group unstable to light.