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:
Jul. 14, 2026
Filed:
Mar. 13, 2023
Canon Kabushiki Kaisha, Tokyo, JP;
Kenta Mitsuiki, Ibaraki, JP;
Hisasuke Kajihara, Ibaraki, JP;
Maki Imura, Kanagawa, JP;
Nobuhiro Yoshida, Ibaraki, JP;
Kohei Yoshiyama, Chiba, JP;
Kentaro Kamae, Kanagawa, JP;
Yuu Nishimura, Chiba, JP;
Kazunari Ooyama, Ibaraki, JP;
Nobuyoshi Sugahara, Tokyo, JP;
Yuya Chimoto, Chiba, JP;
Takaho Shibata, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A toner includes a toner particle containing a binder resin containing a crystalline polyester. In differential scanning calorimetry (DSC), the toner is heated to 180° C. at a rate of 10° C./min, then cooled to 25° C. at a rate of 10° C./min and successively from 25° C. to 15° C. at a rate of 3° C./min, and heated again to 180° C. at a rate of 10° C./min. As a result, an exothermic amount P1 when the toner is cooled from 80° C. to 40° C. is 1.00 J/g or less, an exothermic amount P2 when the toner is cooled from 25° C. to 15° C. is 0.10 J/g or more, and when a sum of endothermic amounts P3 (J/g) when the toner is heated again from 40° C. to 180° C. and a sum of exothermic amounts P4 (J/g) when the toner is cooled from 180° C. to 40° C. satisfies 2.0≤P3-P4≤10.0.