申请人:E. I. du Pont de Nemours and Company
公开号:US04501896A1
公开(公告)日:1985-02-26
Novel nitrobenzyl compounds are incorporated into a photographic emulsion or developer for controlled release of development/image modifier compounds. This occurs imagewise only after developer oxidation products have been formed in the course of the development process. For example, nitrobenzyl-masked phenylmercaptotetrazole (PMT), incorporated into a silver halide emulsion, reacts with developer oxidation products via an electron transfer mechanism to release the potent development restrainer PMT.
新型硝基苄基化合物被加入到感光乳剂或显影剂中,用于控制显影/图像修饰化合物的释放。这种释放仅在显影过程中形成显影剂氧化产物后,按图像的方式发生。例如,硝基苄基掩蔽的苯硫基四唑(PMT),被掺入到卤化银乳剂中,通过与显影剂氧化产物的电子转移机制反应,释放出强大的显影抑制剂PMT。