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:
Aug. 17, 2021
Filed:
Dec. 03, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Kosuke Fukudome, Tokyo, JP;
Tetsuya Kinumatsu, Mishima, JP;
Koji Nishikawa, Susono, JP;
Takaaki Furui, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A toner including: a toner particle that includes a binder resin; and an external additive, wherein a toner hardness A N/m and a toner hardness B N/m satisfy B≥600 and B/A≥1.30, in the formulas, the toner hardness A is an average value of a slope in a displacement region of from 0.00 μm to 0.20 μm when measuring the toner under a condition of a load application speed of 0.83 μN/sec, and the toner hardness B is an average value of a slope in a displacement region of from 0.00 μm to 0.20 μm when measuring the toner under a condition of a load application speed of 2.50 μN/sec.