A photographic emulsion consisting of gelatine and a silver halide additive may be applied under closely controlled temperature conditions at about 3 deg.C above the softening limit of the emulsion. The equipment comprises a supply reservoir and a heat exchanger unit with a heat input rate in the range 250 to 900 kcal/m2.h.deg.C. The film is fed through the sides of a parallel slot device with the emulsion fed to the inner face of the film and the heat fed to the outer wall. Settings of guide strips and feed rates are adjusted in accordance with the viscosity of the emulsion to ensure setting of the coating is complete before the paper or film leaves the apparatus.
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机译:由明胶和卤化银添加剂组成的照相乳剂可以在严格控制的温度条件下在高于乳剂软化极限约3℃的条件下施加。该设备包括储水箱和热交换器单元,其热输入速率在250至900kcal / m 2·h·℃的范围内。薄膜通过平行槽装置的侧面输送,乳剂输送到膜的内表面,热量输送到外壁。根据乳液的粘度调整导条的设置和进纸速度,以确保在纸张或薄膜离开设备之前完成涂层的设置。
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