Invention Grant
- Patent Title: Reversible thermosensitive recording medium, reversible thermosensitive recording label, member, and image processing method
- Patent Title (中): 可逆热敏记录介质,可逆热敏记录标签,成员和图像处理方法
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Application No.: US12190078Application Date: 2008-08-12
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Publication No.: US08088712B2Publication Date: 2012-01-03
- Inventor: Hitoshi Shimbo , Kunio Hayakawa , Jun Maruyama
- Applicant: Hitoshi Shimbo , Kunio Hayakawa , Jun Maruyama
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Cooper & Dunham LLP
- Priority: JP2007-210832 20070813
- Main IPC: B41M5/333
- IPC: B41M5/333 ; B41M5/337

Abstract:
The present invention provides a reversible thermosensitive recording medium including: a support, and a reversible thermosensitive recording layer laid on the support, the recording layer containing a reversible thermosensitive composition, wherein the reversible thermosensitive composition forms a relatively color-developed state and a colorless state depending on a difference in a heating temperature and/or a cooling rate after heating by the use of an electron-donating color-forming compound and an electron-accepting compound; a resin component contained in the reversible thermosensitive recording layer is a resin in which a polyol resin having a hydroxyl value within the range of 100 KOHmg/g to 250 KOHmg/g is crosslinked; and as the electron-accepting compound, a urea compound represented by the following General Formula (1) is used, where “n” is an integer of 23 or greater.
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