Imaging Science and Photochemistry ›› 2005, Vol. 23 ›› Issue (2): 108-113.DOI: 10.7517/j.issn.1674-0475.2005.02.108

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Effects of Conventional Chemical Sensitizations on Sensitivity of PTG Materials Using PVA as a Hydrophilic Binder

CAO Jing1,2, LIN Hai-li1,2, YAO Lin-hui1, SHI Yao1, LI Jin-pei1, XIA Pei-jie1   

  1. 1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100101, P.R. China;
    2.Graduate School of Chinese Academy of Sciences, Beijing 100039, P.R. China
  • Received:2004-11-08 Revised:2004-12-17 Online:2005-03-23 Published:2005-03-23

Abstract: The conventional chemical sensitizations (sulfur-, gold, sulfur-plus-gold and reduction-sensitization) were used to sensitize the AgBr emulsions with about 140 nm of grain size, covered in PTG coating with PVA as a binder, in order to examine the effects on sensitivities of PTG materials. The results showed that the chemical sensitizations were still quite effective for PTG system with hydrophilic PVA to increase sensitivities significantly, but not fog levels.

Key words: Photothermographic materials, dry silver, silver halide, chemical sensitization

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