Photothermographic and Thermographic Imaging Materials

Abstract

Photothermographic and thermographic imaging technology based on silver carboxylates have evolved into high quality black and white imaging materials suitable for extremely demanding applications such as medical X‐ray and graphic arts films. the unique ability of generating a high quality image that requires only dry processing, without any of the hazards and environmental problems of conventional, wet‐processed films for these applications, has provided significant new commercial opportunities for this technology. Major advances in the state of the art have occurred in this field since photothermography of this type was first introduced as Dry Silver in 1964. This article describes the components and their function in these types of imaging systems, their development over the last 40 years, the advances in basic understanding of the current status of the science behind the technology, and prospects for the future.

Synthesis of Silver Nanoparticles by a Sonochemistry Method Useful for Two-Dimentional Nanoparticle Arrays

“…In order to obtain silver nanoparticles under mild conditions, thermally unstable intermediate which could react easily with the reducing agent was synthesized [19]. The reaction of silver stearate with triphenylphosphine has been investigated [23], and one kind of new silver complex containing triphenylphosphine was reported [24]. Compared with silver stearate, the new silver complex was more soluble and reactive.…”

Mode of Complex Formation Between Thiones and Silver Ion Within a Photothermographic Formulation: The Crystal and Molecular Structure of Hexa- (silver-5-methyl-2-mercaptobenzimidazole THF)

“…We have found that the same reaction occurs with long chain length silver carboxylates, such as those found in a typical photothermographic construction, [10][11][12] albeit to a more limited extent. The Ag 2 S appears in all cases, but the yield is substantially different with some apparent relationship to the chain length.…”

“…8,9 In addition, MBI has been found to be an important component in photothermographic imaging materials, which are light exposed but thermally developed without conventional wet processing. [10][11][12] We reported the solid state structure of the ͓AgBr• MBI• ͑acetone͒ 0.5 ͔ 4 complex that is formed in organic solvent from MBI and the light sensitive component of photographic and photothermographic films. 13 Under those conditions, despite the labile proton available on the MBI, the ligand acts as a neutral donor, unlike its adsorption to silver halide surfaces in aqueous conditions.…”