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. 19, 2022
Filed:
Aug. 23, 2021
Canon Kabushiki Kaisha, Tokyo, JP;
Yuta Okuyama, Chiba, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In a developing apparatus, a distance along an outer peripheral surface of a rotatable developing member between a first and a second maximum peak positions is less than 18 [mm], the first and the second maximum peak positions respectively corresponding to maximum values of a magnetic flux density of a first and a second magnetic poles with respect to a normal direction of the rotatable developing member. A distance along the outer peripheral surface of the rotatable developing member in a width of a value obtained by adding 2 [mT] to a minimum value of the magnetic flux density with respect to the normal direction of the rotatable developing member is 5.5 [mm] or more, at a downstream side of the first maximum peak position and at an upstream side of the second maximum peak position with respect to a rotation direction of the rotatable developing member.