一些含硫、含氮化合物在卤化银成像过程中的作用

采用在曝光前后用不同浓度的化合物溶液分别处理硫增感立方乳剂样品方法,观察它们在感光特性上的差别,从而判断这些化合物在卤化银成像过程的不同阶段各自所起的作用.本工作中所选用的化合物有-1-苯基-5-巯基四氮唑(PMT),6-硝基苯并咪唑-(硝酸盐-),5-硝基苯并咪唑,5-硝基吲唑,4-羟基-6-甲基-1,3,3a,7-四氮茚-(TAI)和硫代乙酰胺.结果表明:PMT在一定的浓度范围内对潜影的形成有促进作用,但对显影有抑制作用;6-硝基苯并咪唑和-5-硝基苯并咪唑的情况相似,对潜影的形成无显著影响,而对显影的抑制作用明显;5-硝基吲唑不仅对潜影的形成有明显阻滞作用,而且对显影也有抑制作用;TAI则对潜影的形成有明显的促进作用,对显影的影响较小;硫代乙酰胺在弱酸性介质中对潜影的形成有显著阻滞作用,对显影也有一定的抑制作用,但对灰雾的增长十分显著.

EFFECTS OF SOME COMPOUNDS WITH SULFUR AND NITROGEN ON IMAGING PROCESS OF SILVER HALIDE

Solutions of some compounds containing sulfur and nitrogen, such as 1-phenyl-5-mercapto-tetrazole (PMT),6-nitro-benzimidazole nitrate.5-nitro-benzimidazole,5-nitro-indazole,4-hydroxy-6-methyl-1,3,3a,7-tetraazaindene (TAI) and thioacetamide,were used to treat samples of sulfur sensitized cubic AgBr emulsion before and after exposure,respectively.Comparisons between sensitometric curves obtained from samples treated by solutions of these compounds before exposure and from ones treated after exposure showed that PMT at a certain range of concentrations had a positive effect on the latent image formation and a negative on the development. Either 6-nitro-benzimidazole nitrate or 5-nitro-benzimidazole had not significant effect on the latent image formation, but rather signficant inhibition on the development.5-nitro-indazole had both inhibitions on the latent image formation and on the development.TAI was of a striking stimulation on the latent image formation and not on the development. Thioacetamide had both inhibitions on the latent image formation and on the development and increased fog as well.