影像科学与光化学 ›› 1999, Vol. 17 ›› Issue (1): 1-6.DOI: 10.7517/j.issn.1674-0475.1999.01.1

• 研究快讯 •    下一篇

钨酸钙核/卤化银壳微晶乳剂的二次定影研究

郭新民, 王素娥   

  1. 中国科学院感光化学研究所, 北京100101
  • 收稿日期:1998-07-17 修回日期:1998-10-27 出版日期:1999-02-20 发布日期:1999-02-20
  • 通讯作者: 王素娥
  • 基金资助:
    国家自然科学基金资助项目(批准号:29673047);美国柯达公司资助项目

STUDY ON THE SECOND FIXING OF CaWO4 CORE /AgX SHELL MICROCRYSTAL EMULSION

GUO Xinmin, WANG Su’e   

  1. Institute of Photographic Chemistry , The Chinese Academy of Sciences, Beijing 100101, P. R. China
  • Received:1998-07-17 Revised:1998-10-27 Online:1999-02-20 Published:1999-02-20

PDF (PC)

1274

摘要： 近20年来,随着卤化银微晶合成技术的进步,合成出了诸如T-颗粒、核壳乳剂和外延复合颗粒乳剂等性能优异的微晶体,极大地提高了乳剂的感光性能.但这些乳剂也有一个共同的缺点,即大量消耗贵金属银,且未成影像的银均随定影过程而浪费.

关键词: 钨酸钙核/卤化银壳微晶, 二次定影, EDTA二钠(CDTA)

Abstract: The capability of EDTA disodium salt(CDTA) solution as a second fixing solution to dissolve CaWO4 core/AgX shell microcrystal emulsion was studied in this paper. The results showed that EDTA disodium salt (CDTA) solution is available for dissolving CaWO4 in the range of pH 5~12, CaWO4 can be fully dissolved. The capability of EDTA disodium salt(CDTA) solution to dissolve CaWO4 core/AgX shell microcrystal emulsion is affected by temperature, pH value and concentration of EDTA disodium salt(CDTA) solution. In comparison with CDTA, the change of concentration of EDTA disodium salt solution makes a greater effect on the fixing capability of EDTA disodium salt than that of CDTA. Under the same conditions of temperature、concentration and pH value, the complexing speed of EDTA disodium salt solution with CaWO4 is faster than that of CDTA solution.

Key words: CaWO4 core/AgX shell microcrystal emulsion, second fixing, EDTA disodium salt(CDTA)

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