Patent ID: 6387605
Filing Date: 2002-05-14
Classification: G03C

Abstract:
A black-and-white photothermographic element comprising a support having coated thereon an imaging coating comprising:(a) a photosensitive silver halide; (b) a non-photosensitive, reducible silver source; (c) a reducing agent system for silver ion; and (d) a binder; wherein the reducing agent system comprises:(i) a hindered phenol; and (ii) a non-fogging co-developer either of the formula â€ƒwherein Y in either formula is H, a metal cation, or an alkyl group, Z is a sulfur or nitrogen atom, and the solid curved line in either formula represents the carbon, oxygen, sulfur or nitrogen atoms and bonds necessary to complete a 5- or 6-membered main ring that can have at least one pendant or fused ring attached thereto.