| http://www.w3.org/ns/prov#value | - A reversible heat-sensitive recording material comprising a leuco dye and an agent which acts both as a color developing and reducing agent, which is capable of reversible color development and achromatization,the color developing and reducing agent comprising:1) a color developing/reducing agent having the formula: ##STR9## wherein ##STR10## and n1 is an integer equal to or greater than 11; and 2
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