Patent ID: 6730461
Filing Date: 2004-05-04
Classification: G03C,Y10S

Abstract:
A method of preparing a photothermographic material, comprising a support having thereon one or more thermally-developable imaging layers comprising a binder and in reactive association, a photosensitive silver halide, a non-photo-sensitive source of reducible silver ions, and a reducing composition for said non-photo-sensitive source of reducible silver ions.wherein said one or more thermally-developable imaging layers further comprise one or more radiation absorbing substances that provide a total absorbance in said one or more thermally-developable imaging layers of greater than 0.6 and up to and including 3 at an exposure wavelength, comprising the steps of: A) preparing a formulation or formulations comprising a binder and in reactive association, a photosensitive silver halide, a non-photosensitive source of reducible silver ions, a reducing composition for said non-photosensitive source reducible silver ions, and a radiation absorbing compound or compounds that absorb at an exposure wavelength, B) independently coating said formulations on a support in a manner such that, at the exposure wavelength, the total absorbance of all thermally-developable imaging layers is greater than 0.6, and drying them while said material is conveyed at a rate of at least 5 meters per minute.