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:
May. 05, 2020
Filed:
Apr. 08, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Daisuke Yamashita, Tokyo, JP;
Yuichi Mizo, Toride, JP;
Koh Ishigami, Abiko, JP;
Masaharu Miura, Toride, JP;
Takaho Shibata, Tokyo, JP;
Takeshi Ohtsu, Toride, JP;
Yosuke Iwasaki, Abiko, JP;
Wakiko Katsumata, Kashiwa, JP;
Hitoshi Sano, Matsudo, JP;
Kenta Mitsuiki, Toride, JP;
Takakuni Kobori, Toride, JP;
Rei Hijikawa, Kashiwa, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A toner comprising a toner particle including a binder resin and a crystalline polyester resin, wherein the binder resin is an amorphous polyester resin having a linear alkyl group at a molecular chain terminal; the crystalline polyester resin is a polycondensate of a diol and a dicarboxylic acid; the number of carbon atoms Cof the linear alkyl group, the number of carbon atoms Cof the diol, and the number of carbon atoms Cof the dicarboxylic acid, excluding carbon that belongs to carboxyl groups, satisfy the following relationships; and a glass transition temperature of the toner as measured by a differential scanning calorimeter is from 40.0° C. to 55.0° C.8≤C≤20  (1)C/C≥3.5 and 0≤|C−C|≤3  (2)C/C≥3.5 and 0≤|C−C|≤3  (3)