| US 7,553,796 B2 | ||
| Phenol compound, reversible thermosensitive recording medium, reversible thermosensitive recording label, reversible thermosensitive recording member, image-processing apparatus and image-processing method | ||
| Satoshi Yamamoto, Odawara (Japan); Kyoji Tsutsui, Mishima (Japan); Hiromi Furuya, Shizuoka (Japan); and Kyohji Okada, Fuji (Japan) | ||
| Assigned to Ricoh Company, Ltd., Tokyo (Japan) | ||
| Appl. No. 11/886,200 PCT Filed Mar. 16, 2006, PCT No. PCT/JP2006/305767 § 371(c)(1), (2), (4) Date May 14, 2008, PCT Pub. No. WO2006/098507, PCT Pub. Date Sep. 21, 2006. |
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| Claims priority of application No. 2005-076428 (JP), filed on Mar. 17, 2005. | ||
| Prior Publication US 2008/0242539 A1, Oct. 02, 2008 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. B41M 5/333 (2006.01) | ||
| U.S. Cl. 503—201 [346/135.1; 503/214; 503/216; 503/226; 564/443] | 23 Claims |
| 1. A reversible thermosensitive recording medium comprising:
a support; and
a thermosensitive recording layer formed on the support,
wherein the thermosensitive recording layer comprises an electron-donating coloring compound and an electron-accepting compound,
the thermosensitive recording layer is capable of forming a relatively developed condition and a relatively erased condition
depending on at least one of the difference of heating temperatures and the difference of cooling rates following to heating,
and
the electron-accepting compound comprises a phenol compound expressed by following General Formula (1):
 where, in the General Formula (1), “1” represents an integer of 1 to 3 and “m” represents an integer of 23 or more.
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