利用光线的光化作用制成照片已有一百多年历史。在摄影术发展的初期便有人试验彩色照相。后来陆续发明了很多制取彩色照片的方法,可是其中祇有个别方法被实际采用,原因是很多方法中的感光材料制造困难、技术过程复杂、不便实用。现在,利用「彩色显影」原理处理感光材料以得彩色照相的方法,已被生产技术上采用。彩色显影的原理是:在显影过程中使银像与由染料构成的像同时在一起生成。将金属银除去后便剩下彩色像。因为用此法得到的染料像是伴 It has been more than a hundred years since photos were made using actinic light. Someone experimented with color photography early in the development of photography. Later, many methods of making color photographs were invented one after another, but only a few of them were actually adopted. The reason is that many methods are difficult to manufacture photosensitive materials, the technical process is complicated and inconvenient and practical. Nowadays, the method of using the principle of “color developing” to process photosensitive materials for color photography has been adopted technically in production. The principle of color development is that the silver image and the image made of the dye are simultaneously formed together in the development process. Remove the metal silver color images will be left. Because the dye obtained by this method is a companion