Patent ID: 7018786
Filing Date: 2006-03-28
Classification: G03C,Y10S

Abstract:
1. A black and white monosheet thermographic recording material comprising a support and a thermosensitive element the thermosensitive element comprising a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, a binder and at least one toning agent, wherein the at least one toning agent is represented by formula (I): wherein R 1 is an alkyl, an alkenyl, an alkynyl, a cycloalkyl, an alkaryl, an aryl, a non-aromatic heterocyclic or a heteroaryl group all of which may be optionally substituted; R 2 and R 3 are independently a hydrogen or a halogen atom or an amino, amide, ester, carboxy, carbonato, alkyl, alkenyl, alkynyl, cycloalkyl, alkaryl, aryl, non-aromatic heterocyclic or heteroaryl group all of which may be optionally substituted; R 2 and R 3 may together represent the atoms necessary to complete a heteroaromatic ring with no more than one nitrogen atom, an alicyclic ring or a non-aromatic heterocyclic ring which all may be optionally substituted; X is a carbonyl group, or is —N—R 5 , where R 5 is an alkyl group; and with the proviso that R 1 may not be a hydrogen atom if both R 2 and R 3 are both hydrogen atoms, and wherein said thermographic recording material is a substantially light-insensitive thermographic recording material.