发明名称 |
Reversible thermosensitive coloring material and reversible thermosensitive recording material using the same |
摘要 |
<p>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.</p> |
申请公布号 |
EP1854638(A1) |
申请公布日期 |
2007.11.14 |
申请号 |
EP20070107631 |
申请日期 |
2007.05.07 |
申请人 |
RICOH COMPANY, LTD. |
发明人 |
YAMAMOTO, SATOSHI;FURUYA, HIROMI;OKADA, KYOHJI |
分类号 |
B41M5/30 |
主分类号 |
B41M5/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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