The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 29, 2005
Filed:
Oct. 25, 2004
Hiroki Kuboyama, Shizuoka, JP;
Tadafumi Tatewaki, Shizuoka, JP;
Shuji Miyamoto, Shizuoka, JP;
Yoshihiko Hotta, Shizuoka, JP;
Hiroshi Higashi, Shiga, JP;
Shinya Takemoto, Shiga, JP;
Tomohiko Terai, Shiga, JP;
Makoto Kajiyashiki, Tokyo, JP;
Hiroki Kuboyama, Shizuoka, JP;
Tadafumi Tatewaki, Shizuoka, JP;
Shuji Miyamoto, Shizuoka, JP;
Yoshihiko Hotta, Shizuoka, JP;
Hiroshi Higashi, Shiga, JP;
Shinya Takemoto, Shiga, JP;
Tomohiko Terai, Shiga, JP;
Makoto Kajiyashiki, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Mitsubishi Plastics, Inc., Tokyo, JP;
Abstract
An information recording-displaying card, includes: core sheet; and over sheet bonded to core sheet, including: a support including an amorphous polyester resin, and a reversible thermosensitive recording layer on the support, including: an electron-donating coloring compound, and an electron-accepting compound. The reversible thermosensitive recording layer is capable of forming coloring state and decolorizing state, with difference in at least one of the following: heating temperature, and cooling rate after heating. The over sheet is embossable in upper portion thereof, functions as image displaying section, and meets the following conditions (A), (B) and (C): (A) (over sheet's upper limit temperature for erasing−30° C.)>(over sheet's temperature of storage elasticity E' (1.0 E+08) Pa), (B) 10 μm or less of surface waviness WCM, and (C) 1.0 E+02 Pa≦(storage elasticity E′ of reversible thermosensitive over sheet at 180° C.)≦5.0 E+07 Pa.