发明名称 Reversible thermosensitive coloring material and reversible thermosensitive recording material using the reversible thermosensitive coloring material
摘要 A reversible thermosensitive coloring material which can reversibly achieve a relatively colored state and a relatively discolored state depending on a temperature to which the coloring material is heated or a cooling speed at which the coloring material is cooled after heated. The coloring material including an electron donating coloring agent; an electron accepting color developer configured to color the coloring agent; and a compound having a Zwitter ion in which a total of charges in a molecule of the compound is zero. A reversible thermosensitive recording material including a substrate and a reversible thermosensitive recording layer, which is located overlying the substrate and which includes the reversible thermosensitive coloring material.
申请公布号 US7419934(B2) 申请公布日期 2008.09.02
申请号 US20070742771 申请日期 2007.05.01
申请人 RICOH COMPANY LIMITED 发明人 YAMAMOTO SATOSHI;FURUYA HIROMI;OKADA KYOHJI
分类号 B41M5/337 主分类号 B41M5/337
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