Thermally-responsive record material
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United States of America Patent
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Issued Date -
May 27, 2010
app pub date -
Nov 16, 2009
filing date -
Nov 21, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A thermally-responsive record material useful for bar coding is taught comprising a support having provided thereon in substantially contiguous relationship a heat sensitive coating comprising at least one chromogenic material, said chromogenic material being selected from a fluoran, and at least one developer of the formula (II)wherein the chromogenic material and developer are of an average particle size equal to or less than 0.7 μm meters, wherein the composition is substantially free of sensitizer or modifier. The record material of the invention remarkably images at high speed, with stable or intense imaging and little or no background discoloration.
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