KINETIC-ANALYSIS OF THE DELAYED FORMATION OF LATENT IMAGE SPECKS IN REDUCTION-SENSITIZED EMULSIONS

Citation
K. Kuge et al., KINETIC-ANALYSIS OF THE DELAYED FORMATION OF LATENT IMAGE SPECKS IN REDUCTION-SENSITIZED EMULSIONS, Journal of imaging science and technology, 38(1), 1994, pp. 13-17
Citations number
13
Categorie Soggetti
Photographic Tecnology
ISSN journal
10623701
Volume
38
Issue
1
Year of publication
1994
Pages
13 - 17
Database
ISI
SICI code
1062-3701(1994)38:1<13:KOTDFO>2.0.ZU;2-M
Abstract
On the assumptions that reduction sensitization specks absorb single s ilver atom species (SSAS), so that the number of SSAS decreases, a the oretical rate equation for the delayed formation of latent image speck s was derived. This equation shows that an increasing value DELTAP dec reases first slightly and then greatly, whereas an apparent rate const ant K first decreases slightly and then increases greatly when the rat e constant of disappearance of SSAS increases. Experimental results sh ow that DELTAP decreases first slightly and then greatly, whereas K fi rst decreases slightly and then increases greatly when the sensitizati on level increases. This agreement suggests that a reduction sensitiza tion speck absorbs SSAS and consists of two silver atoms. The decrease of DELTAP also suggests that a mechanism concerning photoholes for th e delayed formation is improbable.