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专利名称：Method for preparation of a
photothermographic material with increasedphotosensitivity
发明人：Herman Uytterhoeven,Paul Callant申请号：US10384321申请日：20030307公开号：US07067243B2公开日：20060627
摘要：A process for preparing a photothermographic material with increasedphotosensitivity, the photothermographic material comprising a support and a photo-addressable thermally developable element, exclusive of a compound R—S(M)wherein Ris an aliphatic hydrocarbon, aryl or heterocyclic group, M is a hydrogen atom, or cation,and letter n is a number determined so as to render the molecule neutral and alsoexclusive of a compound capable of releasing a mobile dye corresponding to or inverselycorresponding to the reduction of silver halide to silver at elevated temperatures, thephoto-addressable thermally developable element containing a photosensitive agent incatalytic association with a light-insensitive organic silver salt, a reducing agent for thelight-insensitive organic silver salt in thermal working relationship therewith and a binder,comprising the steps of: (i) increasing the photosensitivity of a photosensitive silver halideby chemical sensitisation with a chemical sensitising merocyanine dye containing a thionegroup in a non-oxidative aqueous medium, optionally in the presence of the light-insensitive organic silver salt, thereby producing the photosensitive agent; (ii) coating thesupport with one or more aqueous solutions or dispersions together containing the
light-insensitive organic silver salt, the photosensitive agent, the reducing agent and thebinder; (iii) drying the coating or coatings thereby producing the photo-addressablethermally developable element.
申请人：Herman Uytterhoeven,Paul Callant
地址：Bonheiden BE,Edegem BE
国籍：BE,BE
代理机构：Leydig, Voit & Mayer, Ltd.
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