发明名称 |
Masked development/image modifier compounds of silver photographic systems |
摘要 |
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.
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申请公布号 |
US4343893(A) |
申请公布日期 |
1982.08.10 |
申请号 |
US19800172999 |
申请日期 |
1980.07.25 |
申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
DONALD, DENNIS S.;LEE, ROSS A. |
分类号 |
C09B51/00;C07D231/56;C07D239/10;C07D257/04;G03C1/34;G03C7/305;(IPC1-7):G03C5/26;G03C1/02 |
主分类号 |
C09B51/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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