Spectral sensitization of silver halides: New approaches

Efficient methods of completion of non-stabile silver atoms or latent image sub-centers to the stabile particles of latent image during exposure under the action of additional chemical energy are considered. The main idea of realization of such process lies in use of chemical intensification - primary development - even at the stage of exposure of photographic material. The case of point is the latensification of the latent image in the process of exposure of photographic material under the action of reducers. In this case the latensification can be aroused by either the reducers, which are present in photographic layer or the reducers, which are generated in the oxidized decomposition of the supersensitizer. Necessary condition of the effective action of reducers is their specific adsorption on the Ag2S-centres of sensitivity.