| 摘要 |
PURPOSE:To obtain the titled material having a less tendency to change in quality in case of storing for a long period without use by incorporating a base compd. or its precursor which has a function of a developing auxiliary and is enclosed in a microcapsule to a photosensitive layer. CONSTITUTION:The photosensitive layer comprising silver halide, a polymerizable compd., a reducing agent and the base compd. or its precursor enclosed in the microcapsule is preferably composed of a heat melting material such as wax having a melting point or a softening point of 50-200 deg.C. The concrete example of the polymerizable compd. can be enumerated an acrylic acid ester such as n-butylacrylate, etc., and a methacrylic acid ester such as methylmethacrylate, etc. The polymerizable compd. may be used 0.05-1,200wt% per silver halide.
|
