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在照相材料快速单浴加工过程中,有机防灰雾剂常常减缓定影速度,因而为了降低灰雾,常在不同深度的乳剂层中使用两种不同性质的防灰雾剂。防灰雾剂导致定影速度降低,通常认为是由于在定影液中防灰雾剂与银生成难溶性化合物所致;另一个重要原因也许是被吸附在明胶上的防灰雾剂阻滞了硫代硫酸钠在涂层中的扩散作用。为此,作者研究了1-苯基-5-巯基四唑(ФМТ)、5-硝基苯并咪唑(НБИ)和苯并三氮唑(БТ)对于硫代硫酸钠透过明胶和乳剂层能力的
During fast one-bath processing of photographic materials, organic anti-fogging agents often slow down the fixing speed and therefore two different types of anti-fogging agents are often used in emulsion layers of different depths in order to reduce fogging. Antifoggants lead to a reduction in the fixing speed, which is generally considered to be due to the fact that the antifoggants and the silver generate hardly soluble compounds in the fixing solution. Another important reason may be that the antifoggants adsorbed on the gelatin block the sulfur Diffusion of Sodium Sulfate in Coatings. To this end, the authors investigated the effect of 1-phenyl-5-mercaptotetrazole (ФМТ), 5-nitrobenzimidazole (НБИ) and benzotriazole (БТ) on sodium thiosulfate transmission through gelatin and emulsion layers capable