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:
Jun. 18, 2019
Filed:
Sep. 07, 2017
Canon Kabushiki Kaisha, Tokyo, JP;
Yuta Okuyama, Kashiwa, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A groove is provided in a magnet such that a first magnetic force region where an absolute value of a magnetic force of a component in a direction normal to a developer carrying member is 1 [nN] or less is formed on a surface of the developer carrying member on a downstream side of a third maximum peak position and on an upstream side of a second maximum peak position in a rotation direction of the developer carrying member, and a second magnetic force region where the absolute value of the magnetic force of the component in the direction normal to the developer carrying member is 1 [nN] or less is formed on the surface of the developer carrying member on a downstream side of a first maximum peak position and on an upstream side of the third maximum peak position in the rotation direction of the developer carrying member.