| abstract |
PURPOSE: To ensure a silver halide photosensitive material to be completely stable in a storage condition, and enable a useful group for a photograph to be quickly released even during processing in a solution having a low pH value by causing the material to contain a specified compound. n CONSTITUTION: A compound expressed by the formula I is contained in at least one of silver halide emulsifier layers. In the formula, R 1 and R 2 independently stand for an alkyl group, an aryl group, an alkenyl group and a cycloalkyl group. In addition, the aforesaid groups may contain a substituent or may be condensed to each other. R 3 stands for a hydrogen atom or a substituent, Time for a timing group, (n) for 0 or 1 and PUG for a useful group for a photograph. The addition of the compound to a photosensitive material depends upon the type of the material, PUG or the like, but is generally 10 -9 to 10mol per mol of silver halide. According to this construction, the photosensitive material becomes completely stable during storage, and can quickly release a useful group for a photograph even during processing in a solution having a low pH value. n COPYRIGHT: (C)1992,JPO&Japio |