THE PRESENT STATE AND FUTURE OF SILVER HALIDE PHOTOGRAPHIC MATERIALS AND ROLE OF SCIENTIFIC SOCIETIES

doi:10.7517/j.issn.1674-0475.2003.05.357

Abstract

Abstract: Following the formar papers,the author analyzed the present state of the capability of silver halide photographic materials from the viewpoints of light absorbace,the efficiency of latent image formation,the size of the smallest latent image center,and the stability during storage.The efficiency of latent image formation depends on the quantum yield of free electron generation by an absorbed photon,electron trapping by sensitization centers,and recombination between a photoelectron and a positive hole.It was confirmed that there would be still considerable room for the improvement in the capability.On the basis of the above stated examination and their comparison with digital still cameras,it has been predicted that the production of silver halide photographic materials will be slowly expanded in the world in future. It has been indicated that photographic science and technology have ever been interacted with each other for many years to form very fine and highly composite photographic materials,which have been hardly caught up by newcomers,and that their progresses have depended on the activities of societies of photographic science and technology.

Key words: image science and technology, photographic material, digital still camera

CLC Number:

TQ57

Tadaaki Tani. THE PRESENT STATE AND FUTURE OF SILVER HALIDE PHOTOGRAPHIC MATERIALS AND ROLE OF SCIENTIFIC SOCIETIES[J]. Imaging Science and Photochemistry, 2003, 21(5): 357-376.

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