| US 7,608,139 B2 | ||
| Erasable image forming material | ||
| Takeshi Gotanda, Yokohama (Japan); Satoshi Takayama, Kawasaki (Japan); Kenji Sano, Tokyo (Japan); Yumiko Sekiguchi, Yokohama (Japan); and Shinya Sakurada, Tokyo (Japan) | ||
| Assigned to Kabushiki Kaisha Toshiba, Tokyo (Japan) | ||
| Filed on Jul. 19, 2007, as Appl. No. 11/879,910. | ||
| Claims priority of application No. 2006-251256 (JP), filed on Sep. 15, 2006. | ||
| Prior Publication US 2008/0070781 A1, Mar. 20, 2008 | ||
| Int. Cl. C09D 11/00 (2006.01) | ||
| U.S. Cl. 106—31.23 [106/31.16; 430/19; 430/330] | 6 Claims |
| 1. A method of manufacturing an erasable image forming material, comprising:
melting a color former by heating it at a temperature of a melting point or more;
cooling the molten color former at a temperature lower than the melting point to obtain an amorphous color former; and
mixing a developer and a binder to the amorphous color former after cooling.
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