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铜物理显影挽救微弱银影像

Remedying Weak Silver Images by Copper Physical Development
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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.
作者 傅延勋
出处 《感光材料》 北大核心 1998年第1期13-15,共3页
关键词 物理显影 放大 卤化银 显影 感光材料 : Physical development Copper Amplification
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