| 摘要 |
<p>Photographic reagents can be released from certain photographic reagent releasing compounds by causing them to be oxidized by oxidized 3-pyrazolidone developing agents. Particularly useful photographic reagent releasing compounds are a-substituted ketones or imines in which a photographic reagent is joined to the a-carbon atom through a hetero atom which is cleaved from the a-carbon atom, under alkaline conditions, by means of oxidized 3-pyrazolidone developing agent. Photographic assemblages containing photographic reagent releasing compounds and processes of releasing photographic reagents in photographic elements and assemblages are described.</p> |
