文章基本信息

标题：板状臭化銀粒子表面における銅, 鉛, およびカドミウムイオンの写真作用
本地全文：下载
作者：谷忠昭
期刊名称：日本写真学会誌
印刷版ISSN：0369-5662
电子版ISSN：1884-5932
出版年度：1972
卷号：35
期号：5
页码：272-278
出版社：The Society of Photographic Science and Technolgy of Japan
摘要：Cations of Cu, Pb and Cd were added to tabular AgBr emulsions when the emulsions were coated. Although Pb⁺⁺ and Cd⁺⁺ did not show significant desensitization, Cu⁺⁺ and Cu⁺ caused considerable decrease of both surface and internal speeds of the emulsions. Since the desensitization caused by Cu⁺⁺ was in competition with that caused by phenosafranine which is known to act as electron trape, it has been suggested that Cu⁺⁺ also act as electron traps at the grain surface. It has been suggested that the desensitization observed when Cu⁺ was added to the emulsions result from the formation of Cu⁺⁺ as a result of oxidation of Cu⁺ in the emulsions. By introducing Cu⁺⁺ to the emulsions before or after exposure by bathing the coated emulsions in Cu++ solutions, it has been found that the desensitization caused by Cu⁺⁺ arises from its retardations of both development and latent image formation. The action of Cu⁺⁺ as electron traps is supported by the fact that the redox potential of Cu⁺⁺ is the most positive among Cu⁺⁺, Cd⁺⁺ and Pb⁺⁺.