评价相纸质量的重要指标之一是灰雾值。为抑制灰雾,需在乳剂中加入防灰雾剂,但防灰雾剂常降低乳剂的感光度。现在,在选择防灰雾剂时往往还是凭实践经验。在实践中,人们认识到防灰雾剂的照相作用和这种化合物与银离子形成银盐的物理化学特性有关。为了能有针对性地选择防灰雾剂,本文着重研究了这两者之间的关系。 One of the most important indicators for evaluating the quality of photographic paper is the fog value. In order to suppress the fogging, it is necessary to add the fog preventing agent to the emulsion, but the fog preventing agent often reduces the sensitivity of the emulsion. Now, often in the choice of anti-fog agent or practical experience. In practice, it is recognized that the photographic effect of anti-fogging agents is related to the physicochemical properties of this compound as silver ions form silver salts. In order to be able to choose a specific anti-fog agent, this paper focuses on the relationship between the two.