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:
Dec. 13, 2016
Filed:
Aug. 05, 2014
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Takafumi Hara, Nagaizumi Shizuoka, JP;
Masahiro Ikuta, Mishima Shizuoka, JP;
Tsuyoshi Itou, Izunokuni Shizuoka, JP;
Yasuhito Noda, Mishima Shizuoka, JP;
Kazuhisa Takeda, Kannami Shizuoka, JP;
Takayasu Aoki, Mishima Shizuoka, JP;
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Abstract
A reversibly allochroic toner contains a binder resin and a colorant. The colorant reversibly switches between first and second color states in response to temperature changes. The colorant exhibits a hysteresis in a temperature-color state curve thereof in which the following relationships are satisfied.Tr<T<T<T<T<TgT≦50° C.20° C.≦Tr≦30° C. where, Tis a temperature at which the colorant starts to change from the first color state to the second color state, Tis a temperature at which the colorant completely changes to the second color state, Tis a temperature at which the colorant starts to change from the second color state to the first color state, Tis a temperature at which the colorant completely changes to the first color state, and Tg is a glass transition temperature of the binder resin.