Invention Grant
- Patent Title: Reversible thermosensitive recording material, IC card, magnetic card and method for producing reversible thermosensitive recording material
- Patent Title (中): 可逆热敏记录材料,IC卡,磁卡和用于制造可逆热敏记录材料的方法
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Application No.: US12178256Application Date: 2008-07-23
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Publication No.: US08148299B2Publication Date: 2012-04-03
- Inventor: Jun Maruyama , Satoshi Arai
- Applicant: Jun Maruyama , Satoshi Arai
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Cooper & Dunham LLP
- Priority: JP2007-192153 20070724
- Main IPC: B41M5/42
- IPC: B41M5/42

Abstract:
A reversible thermosensitive recording material including a support, a reversible thermosensitive recording layer, and a gas barrier layer, the reversible thermosensitive recording layer and gas barrier layer being laid over the support, wherein the reversible thermosensitive recording layer is formed of a reversible thermosensitive composition containing a mixture of an electron-accepting compound and an electron-donating color-forming compound whose color-developed state varies depending upon at least one of a heating temperature and a cooling rate after heating, and wherein the gas barrier layer contains an inorganic layered compound and a gas barrier resin which is at least one selected from the group consisting of polyvinyl alcohol polymers and ethylene-vinyl alcohol copolymers.
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