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照相乳剂制造者最关心的问题之一,是他制得的乳剂是否达到了预期的感光度。有很多因素会导致感光度的损失,潜影分散就是重要原因之一。 卤化银颗粒曝光时,在形成可显潜影的同时,也形成了一些在通常条件下不可显的次潜影,次潜影相当稳定,其寿命一般可长达几天。经长时间放置后有些次潜影消失了,有些则成长为潜影,这就是为许多实验所证实了的潜影的延迟生成,次潜影是潜影形成过程的中间产物,它是在卤化银微晶吸收光子后产生的,却不能在正常显影条件下得到相
One of the biggest concerns of the photographic emulsion manufacturer is whether or not the emulsion he has produced has achieved the desired sensitivity. There are many factors that can cause loss of sensitivity, latent image dispersion is one of the important reasons. Silver halide particles exposure, the formation of sub-latent image can be formed at the same time, but also formed under normal conditions can not be significant under the shadow, the sub-latent image is quite stable, and its life expectancy can be up to several days. After a long period of time, some latent images disappear, while others grow into latent images. This is the delayed generation of latent images confirmed by many experiments. Sub-latent images are the intermediate products of the latent image formation process, Silver crystallites absorb photons generated, but can not get the phase under normal development conditions