Imaging medium incorporating a polymeric developer for leuco dye
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United States of America Patent
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Issued Date -
Mar 13, 2003
app pub date -
May 29, 2001
filing date -
May 29, 2001
priority date (Note) -
Abandoned
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Abstract
An imaging medium comprises a color change layer containing a leuco dye. An acidic developing layer comprising a polyhydroxystyrene reacts with said color change layer to produce a color upon the application of heat. The polyhydroxystyrene may be used alone or in combination with traditional leuco dye developers.
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