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:
Oct. 01, 2024
Filed:
Aug. 25, 2023
Canon Kabushiki Kaisha, Tokyo, JP;
Tomoyuki Sakamaki, Tokyo, JP;
Takahiro Suzuki, Saitama, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A developing device includes a developing container, a rotatable developing member to carry and feed the developer to a developing position, a magnet provided non rotatably and stationarily inside the rotatable developing member and provided with a regulating pole, and a regulating portion to regulate an amount of the developer carried on the rotatable developing member by a magnetic force of the regulating pole. With respect to a rotational direction of the rotatable developing member, a local minimum position, where a magnetic flux density of the regulating pole in a normal direction is a local minimum value, is downstream of a first local maximum position where the magnetic flux density of the regulating pole in the normal direction is a first local maximum value, and is upstream of a second local maximum position where the magnetic flux density of the regulating pole is a second local maximum value.