负性卤化银系统中使用肼衍生物促进高感光度和高反差已有四十多年的历史。但其系统中的不稳定性和高灰雾问题直至最近才得以解决,并投入商业使用。本文叙述了有关肼衍生物氧化分解和与体系中其它组份相互作用的某些机理的研究。也叙述了对反应机理更全面的了解,导致对该法所作的改进。 It has been more than 40 years since hydrazine derivatives were used to promote high sensitivity and contrast in negative silver halide systems. However, its instability and high fog problems in its systems were only recently solved and put to commercial use. This article describes some of the mechanisms involved in the oxidative breakdown of hydrazine derivatives and their interaction with other components in the system. A more complete understanding of the reaction mechanism is also described, leading to an improvement of the law.