Ricoh Company, Ltd.

Mitsubishi Plastics, Inc.

Hiroshi Higashi

Yoshihiko Hotta

Tadafumi Tatewaki

Hiroki Kuboyama

Shuji Miyamoto

Tomohiko Terai

Shinya Takemoto

Makoto Kajiyashiki

An information recording-displaying card, includes: a core sheet; and an over sheet bonded to the core sheet, including: a support including an amorphous polyester resin, and a reversible thermosensitive recording layer disposed on the support, including: an electron-donating coloring compound, and an electron-accepting compound. The reversible thermosensitive recording layer is capable of relatively forming a coloring state and a decolorizing state, with a difference in at least one of heating temperature, and cooling rate after heating. The over sheet is embossable in an upper portion thereof, functions as an image displaying section, and meets the following condition (A) and condition (B): (A) (the over sheet's upper limit temperature for erasing &#x2212;30&#xb0; C.)&#x2266;(temperature of a storage elasticity E' (1.0 E+08) Pa)&#x2266;200&#xb0; C., and (B) 1.0 E+04 Pa&#x2266;(the storage elasticity E&#x2032; of the over sheet at 180&#xb0; C.)&#x2266;5.0 E+07 Pa.

Information recording-displaying card, image processing method using same, and image processor

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&#x2212;30&#xb0; C.)&#x3e;(over sheet's temperature of storage elasticity E' (1.0 E+08) Pa), (B) 10 &#x3bc;m or less of surface waviness WCM, and (C) 1.0 E+02 Pa&#x2266;(storage elasticity E&#x2032; of reversible thermosensitive over sheet at 180&#xb0; C.)&#x2266;5.0 E+07 Pa.

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Shiga, Japan

Hiroshi Higashi