Imaging Science and Photochemistry ›› 1998, Vol. 16 ›› Issue (3): 197-202.DOI: 10.7517/j.issn.1674-0475.1998.03.197

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STUDY ON THE PREPARATION AND PROPERTY OF NOVEL HOLLOW GRAIN SILVER HALIDE EMULSIONS Ⅳ. HOLLOW GRAIN SILVER HALIDE EMULSIONS PREPARED IN NON AQUEOUS SOLVENTS

LU Yi, JIANG Lei, WANG Su-e   

  1. Institute of Photographic Chemistry, The Chinese Academy of Sciences, Beijing 100101, P.R. China
  • Received:1998-01-23 Revised:1998-03-30 Online:1998-08-20 Published:1998-08-20

Abstract: A kind of hollow silver halide microcrystals was prepared by the method of using non-aqueous solvent. The holes in the hollow silver halide microcrystals were observed by scanning electron microscope (SEM), and the preferential latent image formation position of hollow microcrystals was studied by surface development and observed by transmission electron microscope. It showed that the latent image is always formed preferentially around the holes of the hollow silver halide microcrystals, and shrinkage phenomenon was observed before and after the hollow grains were treated with water. The sensitometric results showed that the sensitivity of this kind of hollow silver bromide emulsion is much higher than those of cubic silver bromide emulsion and the emulsion of hollow silver bromide prepared by the method of halogen displacement.

Key words: photographic silver halide emulsion, hollow microcrystal, photographic properties