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目前,由于感光材料包括缩微胶片和全息胶片应用范围的扩大、要求的提高,高感高解像力乳剂技术已成为一个极待解决的重要课题。只有高分散乳剂才能制备具有高解像力的感光层。大家知道,这种乳剂易于在所有合成阶段增大卤化银的颗粒。制备高分散感光乳剂,通常是用硝酸银、碱金属及低浓度氨溶液。因此,由第一成熟过渡到第二成熟过程中,一般需要浓缩。而有些浓缩方法会引起卤化银晶体聚结。许多科研工作者的论文说明,可以通过脱水作用使乳剂浓缩,而不发生晶体聚结现
At present, high sensitive and high resolution emulsion technology has become an extremely important issue to be solved due to the expansion of the application range of photographic materials, including microfilm and holographic film, and the increased requirements. Only highly dispersed emulsions can be prepared with high resolution of the photosensitive layer. As is known, this emulsion tends to increase the silver halide grains at all stages of synthesis. Preparation of highly dispersed emulsion, usually with silver nitrate, alkali metals and low concentrations of ammonia solution. Therefore, from the first maturity to the second maturity process, generally need to concentrate. Some methods of concentration cause silver halide crystals to coalesce. The paper by many researchers shows that emulsions can be concentrated by dehydration without the coalescence of crystals