目前,X 光胶片产量已为各类感光材料之首,在全世界年产28亿平方米的感光材料中,36%是 X 光胶片类产品。在应用上,胶片和荧光增感屏系列化匹配使 X 线摄影成为迅速、可靠、准确、方便的重要医疗诊断检查手段之一。目前,世界上医用 X 光胶片生产朝系列化方向发展。品种多达100余种。这与前二、三十年仅有的品种数量相比,有了成倍的增长。尤其是进入七十年代后,世界上各大胶 Currently, X-ray film production has become the first of various types of photosensitive materials, the annual output of 2.8 billion square meters of photographic materials, 36% of X-ray film products. In the application, the serial matching of film and fluorescent sensitization screen makes X-ray photography an important medical diagnostic test method which is rapid, reliable, accurate and convenient. At present, the world’s medical X-ray film production toward the direction of serial development. As many as 100 varieties of species. This has doubled the number of varieties in the first two or three decades. Especially after entering the seventies, the world’s major gum