Thermographic recording material with improved image tone
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United States of America Patent
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Feb 3, 2004
Grant Date -
Aug 15, 2002
app pub date -
Nov 28, 2001
filing date -
Nov 30, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A monosheet black and white substantially light-insensitive thermographic recording material comprising a thermosensitive element and a support, the thermosensitive element containing a substantially light-insensitive organic silver salt and an organic reducing agent therefor in thermal working relationship therewith and a binder, wherein the thermographic recording material comprises a reaction product of an amino-group containing polymer and a compound according to formula (I): ##STR1## wherein each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is independently hydrogen or an optionally substituted alkyl, aryl, heteroaryl, alkoxy or aryloxy group; L is a divalent linking group selected from the group consisting of oxygen and optionally substituted alkyl, aryl, heteroaryl, alkenyl and alkynyl groups; and m is either 0 or 1; and n is either 0 or 1; and a preparation process therefor.
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