Back to articles
General Papers
Volume: 44 | Article ID: art00006
Image
Mechanistic Studies of a New Nucleated Infectious Development System Using Pyridinium Salts
  DOI :  10.2352/J.ImagingSci.Technol.2000.44.3.art00006  Published OnlineMay 2000
Abstract

Photographic properties of 1-benzyl-1,4-dihydronicotinamide (BNAH) are studied for better understanding of the mechanism of the production of high contrast by the infectious development which is induced by the combination of a pyridinium salt and Metol-ascorbate developer. Treatment of internally chemically sensitized silver bromide core/shell emulsion by BNAH and redox buffer followed by development gave high internal fog density. It has been suggested in that the oxidation product of BNAH by redox buffer injects electrons into the conduction band of silver bromide grains, resulting in the formation of fog centers inside the grains. Results support the hypothesis that dihydropyridine works as an intermediate in the production of high contrast by the infectious development in the presence of a pyridinium salt.

Subject Areas :
Views 8
Downloads 1
 articleview.views 8
 articleview.downloads 1
  Cite this article 

Naoki Obi, Jun Takeuchi, A. Gary DiFrancesco, Richard K. Hailstone, "Mechanistic Studies of a New Nucleated Infectious Development System Using Pyridinium Saltsin Journal of Imaging Science and Technology,  2000,  pp 219 - 222,  https://doi.org/10.2352/J.ImagingSci.Technol.2000.44.3.art00006

 Copy citation
  Copyright statement 
Copyright © Society for Imaging Science and Technology 2000
  Login or subscribe to view the content