| 摘要 |
PURPOSE:To coat a photosensitive layer having uniform film thickness without reducing ink receptivity by incorporating a specified F-contg. surface active agent into a photosensitive compsn. to be coated. CONSTITUTION:An F-contg. surface active agent is a copolymer of an acrylate having a fluoro fattyacid group (Rf group) contg. 3-20 carbon atoms and >=40wt% F atoms wherein at least three C atoms in the terminal group are fluorinated sufficiently, or a methacrylate having the Rf group, with poly(oxyalkylene)acrylate or poly(oxyalkylene)methacrylate. The content of these (meth)acrylate monomer unit contg. the Rf group is 7-25wt% basing on the weight of the copolymer, and the mol. wt. of the copolymer is 6,000-100,000. By this method, a uniform film thickness is obtd. by drying the photographic sensitive compsn. after coating the compsn. on a base body. |
