回顾照相乳剂技术的发展过程可以发现,大约每隔二十年,乳剂的照相性能便有一个较大的突破,从而促使感光材料的性能得到相应的发展。三十年代为了适应35毫米相机的需要,要求照相乳剂高感微粒;五十年代紧密结构薄层乳剂的出现,使感光材料的清晰度得到了显著的提高。五十年代至六十 Review of the development of photographic emulsion technology can be found about every two decades, the emulsion has a larger breakthrough in photographic performance, which led to the performance of photosensitive materials have been developed accordingly. Thirty years in order to meet the needs of 35 mm camera, the requirements of high sensitivity emulsion particles; the fifties compact structure of the emergence of thin emulsion, the clarity of the photosensitive material has been significantly improved. Fifties to sixty