铜物理显影挽救微弱银影像  

Remedying Weak Silver Images by Copper Physical Development

作　　者：傅延勋[1] 

机构地区：[1]中国科学技术大学应用化学系

出　　处：《感光材料》1998年第1期13-15,共3页

摘　　要：介绍了用铜物理显影方法挽救微弱银影像的技术。实验表明，对黑白负片拍摄的文汇报半调影像，曝光量可以减少至常规曝光量的１／１２５；对Ｘ光胶片拍摄的手指骨连续调底片，曝光量可以减少至常规曝光量１／３：铜物理显影方法更适合于半调影像。A remedy to the weak silver images by copper physical development is in- troduced. The exposure of black-and -white negative film to copy half-tone image may be decreased to 1 /125 of the normal , and that of X-ray film to phutography continuous tone image may be decreased to 1/3 of the normal. The experiment shows that the stat- ed remedying technique is more suitable for half- tone image than continuous ones.

关 键 词：物理显影 铜 放大 卤化银 显影 感光材料 

分 类 号：TQ571.6[化学工程—精细化工]