THERMAL RECORDING MEDIUM

PURPOSE:To obtain a thermal recording medium having small ground color development by forming leuco dye of fluoran compound having a specific structure in the medium having a thermal color developed layer containing at least leuco dye and developer on a hydrophobic support. CONSTITUTION:A thermal re...

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Bibliographic Details
Main Authors WADA SAYURI, MATSUMOTO MANSUKE, KAWABATA TOSHIHIKO
Format Patent
LanguageEnglish
Published 21.02.1995
Edition6
Subjects
COLOUR PRINTING
LINING MACHINES
PERFORMING OPERATIONS
PRINTING
PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES
STAMPS
TRANSPORTING
TYPEWRITERS
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Summary:PURPOSE:To obtain a thermal recording medium having small ground color development by forming leuco dye of fluoran compound having a specific structure in the medium having a thermal color developed layer containing at least leuco dye and developer on a hydrophobic support. CONSTITUTION:A thermal recording medium comprises at least leuco dye and developer on a hydrophobic support, wherein the dye is formed of fluoran compound represented by a formula (wherein R , R are H, methyl group, ethyl group, isopropyl group, sec-butyl group, sec-pentyl group, 2,6-xylidino group, or the R and R may be bonded to form a heterocycle together with N. R is H, halogen atom, methyl group. R , R are H, halogen group, lower alkyl group). As a result, the medium having small ground color development can be obtained.
Bibliography:Application Number: JP19930193624