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冲洗胶卷是一项细致的工作,胶卷冲得好不好,将会直接影响到照片的质量。黑白胶卷的冲洗程序是:水洗—→显影—→停显—→定影—→水洗—→干燥。水洗:显影前的水洗,其目的是使胶卷的药膜全部浸湿,以便取得显影均匀的效果。水洗时间约一分钟。定影后的水洗,其目的是清除胶卷上的可溶性银盐和硫代硫酸钠(大苏打),防止胶卷变黄。水洗时间一般是在流动的水中漂洗三十分钟,并注意经常翻动胶卷。水洗用18℃—20℃的清水为宜。显影:显影的目的是使胶卷上已感光的银盐还原成黑色银粒。显影的方法分盆显和罐显两种。这
Flushing film is a meticulous work, filming well, will directly affect the quality of photos. Black and white film rinse program is: washing - → development - → stop display - → fixing - → washing - → drying. Washing: washing before development, its purpose is to make the film all the wet membrane in order to obtain the development of uniform results. Washing time of about one minute. After fixing the water washed, its purpose is to clear the film on the soluble silver salt and sodium thiosulfate (soda), to prevent film yellowing. Washing time is generally rinse in flowing water for thirty minutes, and pay attention to frequent film roll. Washed with 18 ℃ -20 ℃ water is appropriate. Development: The purpose of development is to reduce the photosensitive silver salt on the film to black silver. The method of development points pots and pots were two. This