化学增感对苯并三氮唑银的PTG材料感光性能的影响

本文主要研究了传统卤化银照相材料中的增感技术,如硫增感、金增感、硫加金协同增感,对新型的以苯并三氮唑银为银源、水性聚乙烯醇为粘合剂的光敏热成像材料增感是否有效的问题.结果显示,传统化学增感对异位法制备的溴化银为光敏剂的光敏热成像材料具有很好的增感效果,硫加金协同增感的效果要好于单独的硫增感和金增感;传统化学增感对原位法制备的溴化银为光敏剂的光敏热成像材料没有增感效果,反而减感,硫加金减感效果最严重.

The Effects of Chemical Sensitization on the PTG Materials Using Silver Benzotriazole as Silver Source

The effectiveness of chemical sensitization technology in conventional silver halide photography, like sulfer sensitization, gold sensitizatin, sufer-plus-gold sensitization, was researched for photothermographic materials using silver benzotriazole as silver source and water-coated polyvinyl alcohol as binder. It was found that conventional chemical sensitization used in ex-situ method photothermographic materials with silver bromide as photosensitizer had a good impact in improving the sensitivity, and the sulfur- plus-gold sensitization has the best effection. However, conventional chemical sensitization used in in-situ method photothermographic materials reduced the sensitivity, and the sulfur- plus-gold sensitization reduced most seriously.