Sensitization of Zn (Ⅱ)-EDTA and Cd (Ⅱ)-EDTA on Silver Bromide Emulsion Doped with Oxalate

doi:10.7517/j.issn.1674-0475.2009.06.409

Abstract

Abstract: In the emulsifying process of AgBr microcrystals in the double-jet apparatus controlled by a microcomputer,a certain amount of oxalate salt was injected at specific time and pAg into a reactor to prepare AgBr grain emulsions in which oxalate ions were doped at subsurface of AgBr microcrystals,and which were sensitized respectively by sulfur plus gold,sulfur plus gold plus Zn (Ⅱ)-EDTA or Cd(Ⅱ)-EDTA,and dye. The results from the whole experiments and sensitometric results from these emulsions showed: 1) that sensitization of Zn (Ⅱ)-EDTA or Cd (Ⅱ)-EDTA on silver bromide emulsion was affirmed;2) That a cooperation sensitization of Zn (Ⅱ)-EDTA or Cd (Ⅱ)-EDTA,sulfur plus gold,and dye could be carried out to make a higher level of sensitization;3) That a cooperation sensitization of Zn (Ⅱ)-EDTA or Cd (Ⅱ)-EDTA,on the basis of (sulfur plus gold) and dye,with oxalate-doped was carried out to make a higher level of sensitization without any increase in the level of fog.

Key words: oxalate, dope, silver bromide, Zn (Ⅱ)-EDTA, Cd (Ⅱ)-EDTA, sensitization

CLC Number:

TQ57

MA Wang-jing, SHI Yao, ZHAO Yan-yan, DUAN Pei-cheng, LI Zhi, YANG Xin-min. Sensitization of Zn (Ⅱ)-EDTA and Cd (Ⅱ)-EDTA on Silver Bromide Emulsion Doped with Oxalate[J]. Imaging Science and Photochemistry, 2009, 27(6): 409-417.

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