The Toning Effect of Nicotinic Acid on Thermographic Imaging Material

doi:10.7517/j.issn.1674-0475.2010.01.19

Imaging Science and Photochemistry ›› 2010, Vol. 28 ›› Issue (1): 19-28.DOI: 10.7517/j.issn.1674-0475.2010.01.19

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The Toning Effect of Nicotinic Acid on Thermographic Imaging Material

ZHANG Zhan-jiang^1,2, LI Jin-pei¹

1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R.China;
2. Graduate School of Chinese Academy of Sciences, Beijing 100049.P.R.China

Received:2009-05-31 Revised:2009-07-20 Online:2010-01-23 Published:2010-01-23

Abstract

Abstract: Nicotinic acid was introduced as a toner into the thermographic material based on silver stearate(AgSt).The results showed that nicotinic acid obviously increased the developed silver density, changed the image color from golden-yellow to black,altered the morphology of developed silver particle,enlarged the silver particle size,and aligned the silver particles as paralleled chains of pearls.Further study revealed that nicotinic acid lowered the thermal transition temperature of the silver source and the values of pH and pAg in the emulsion of the said material.Novel silver carboxylate complex may have been resulted by heating the mixture of AgSt and Nicotinic acid.

Key words: nicotinic acid, toner, thermography

CLC Number:

TQ57

ZHANG Zhan-jiang, LI Jin-pei. The Toning Effect of Nicotinic Acid on Thermographic Imaging Material[J]. Imaging Science and Photochemistry, 2010, 28(1): 19-28.

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The Toning Effect of Nicotinic Acid on Thermographic Imaging Material

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