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

A method of manufacturing an information recording-displaying card, comprising:

• heating-pressing a core sheet and an over sheet at a melting temperature or less of an electron-accepting compound, to thereby bond the over sheet with the core sheet,
• wherein the over sheet comprises:
• a support which comprises an amorphous polyester resin, and
• a reversible thermosensitive recording layer disposed on the support,
• wherein the reversible thermosensitive recording layer comprises:
• an electron-donating coloring compound, and
• the electron-accepting compound,
• wherein the reversible thermosensitive recording layer is capable of forming a coloring state and a decolorizing state, with a difference in at least one of the following:
• a heating temperature, and
• a cooling rate after a heating, and
• wherein 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):
• condition (A) (the over sheet's upper limit temperature for erasing −30° C.)≦(a temperature of a storage elasticity E′ (1.0 E+08) Pa)≦200° C., and condition (B) 1.0 E+04 Pa≦(the storage elasticity E′ of the over sheet at 180° C.)≦5.0 E+07 Pa.

An over sheet, comprising:

• a support which comprises an amorphous polyester resin;
• and
• a reversible thermosensitive recording layer disposed on the support;
• wherein the reversible thermosensitive recording layer comprises:
• an electron-donating coloring compound, and
• an electron-accepting compound,
• wherein the reversible thermosensitive recording layer is capable of forming a coloring state and a decolorizing state, with a difference in at least one of the following:
• a heating temperature, and
• a cooling rate after a heating, and
• wherein 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):
• condition (A) (the over sheet's upper limit temperature for erasing −30° C.)≦(a temperature of a storage elasticity E′ (1.0 E+08) Pa)≦200° C., and condition (B) 1.0 E+04 Pa≦(the storage elasticity E′ of the over sheet at 180° C.)≦5.0 E+07 Pa.

An image processing method, comprising:

• heating a surface of an image displaying section of an information recording-displaying card;
• and
• at least one of the following:
• displaying an image, and
• erasing the image,
• wherein the information recording-displaying card, comprises:
• a core sheet;
• an over sheet bonded to the core sheet;
• wherein the over sheet comprises:
• a support which comprises an amorphous polyester resin, and
• a reversible thermosensitive recording layer disposed on the support,
• wherein the reversible thermosensitive recording layer comprises:
• an electron-donating coloring compound, and
• an electron-accepting compound,
• wherein the reversible thermosensitive recording layer is capable of forming a coloring state and a decolorizing state, with a difference in at least one of the following:
• a heating temperature, and
• a cooling rate after a heating, and
• wherein 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):
• condition (A) (the over sheet's upper limit temperature for erasing −30° C.)≦(a temperature of a storage elasticity E′ (1.0 E+08) Pa)≦200° C., and condition (B) 1.0 E+04 Pa≦(the storage elasticity E′ of the over sheet at 180° C.)≦5.0 E+07 Pa.

An image processor, comprising:

• at least one of the following:
• an image displaying unit for displaying an image to an information recording-displaying card;
• an image erasing unit for erasing the image;
• and
• an image displaying-erasing unit for displaying and erasing the image;
• wherein the information recording-displaying card comprises:
• a core sheet;
• an over sheet bonded to the core sheet;
• wherein the over sheet comprises:
• a support which comprises an amorphous polyester resin;
• and
• a reversible thermosensitive recording layer disposed on the support,
• wherein the reversible thermosensitive recording layer comprises:
• an electron-donating coloring compound, and
• an electron-accepting compound,
• wherein the reversible thermosensitive recording layer is capable of forming a coloring state and a decolorizing state, with a difference in at least one of the following:
• a heating temperature, and
• a cooling rate after a heating, and
• wherein 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):
• condition (A) (the over sheet's upper limit temperature for erasing −30° C.)≦(a temperature of a storage elasticity E′ (1.0 E+08) Pa)≦200° C., and condition (B) 1.0 E+04 Pa≦(the storage elasticity E′ of the over sheet at 180° C.)≦5.0 E+07 Pa.