The use ofthioamido and alkynyl substituted heterocyclic ammonium salts in producing images in silver halide photographic elements is disclosed. The thiomideo and alkynyl substituted heterocyclic ammonium salts can be incorporated in photographic silver halide emulsions. The thiomido substituent is capable of promoting adsorption of these salts to silver halide grain surfaces. In negative working surface latent image forming emulsions the thiomido and alkynyl substituted heterocyclic ammonium salts permit higher speeds to be achieved. In direct positive internal latent image forming emulsions nucleation activity and improved incubation stability can be achieved.
本发明公开了
硫代
氨基和炔基取代杂环
铵盐在卤化
银感光元件中生成图像中的用途。
硫代
氨基和炔基取代杂环
铵盐可以掺入感光卤化
银乳剂中。
硫代
氨基取代基能够促进这些盐吸附到卤化
银颗粒表面。 在负工作表面潜影形成乳剂中,
硫代
氨基和炔基取代杂环
铵盐可以实现更高的速度。 在直接正内部潜影形成乳剂中,可以实现成核活性并提高孵育稳定性。