Back to articles
General Papers
Volume: 42 | Article ID: art00006
Image
Mechanistic Studies of a New Nucleated Infectious Development System Using Pyridinium Salts: Nucleation of Silver Halide Grains by Dihydropyridines
  DOI :  10.2352/J.ImagingSci.Technol.1998.42.3.art00006  Published OnlineMay 1998
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 induced by the combination of a pyridinium salt and Metol-ascorbate developer. Treatment of silver bromide emulsion or silver chlorobromo emulsion by BNAH and redox buffer followed by development gave high fog density. It has been suggested that the oxidation product of BNAH by redox buffer nucleates silver halide grains and makes them developable. 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 5
Downloads 0
 articleview.views 5
 articleview.downloads 0
  Cite this article 

Naoki Obi, Jun Takeuchi, Yasuhiko Kojima, Yasuo Shigemitsu, A. Gary DiFrancesco, Richard K. Hailstone, "Mechanistic Studies of a New Nucleated Infectious Development System Using Pyridinium Salts: Nucleation of Silver Halide Grains by Dihydropyridinesin Journal of Imaging Science and Technology,  1998,  pp 221 - 227,  https://doi.org/10.2352/J.ImagingSci.Technol.1998.42.3.art00006

 Copy citation
  Copyright statement 
Copyright © Society for Imaging Science and Technology 1998
  Login or subscribe to view the content