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对于增加染料用量会引起减感的原因,已往曾被简单地解释为:随着染料用量的增加,卤化银颗粒对染料的吸附也相应增加,但游离的(未被吸附的)染料量亦随之提高。这些游离染料对卤化银的感光颗粒却起到了一个滤色镜的作用。因而造成了乳剂的减感。随着实验设备的完善和研究工作的深入,逐步认清了染料减感的真实原因: (1)由于氧的存在。染料同氧反应之后,氧化染料可以漂白已生成的潜影,未同
The reason for the increase in the amount of dye that causes desensitization has been briefly explained in the past as the amount of dye adsorbed by the silver halide grains increases with the amount of dye added, but the amount of free (non-adsorbed) dye also increases with Improve. These free dyes act as a color filter on silver halide photographic particles. Thus creating a sense of desensitization of the emulsion. With the improvement of experimental equipment and in-depth research, we gradually recognize the true causes of dye desensitization: (1) due to the presence of oxygen. After the dye reacts with oxygen, the oxidized dye can bleach the generated latent image, not the same