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:
Feb. 15, 1994
Filed:
Jul. 09, 1991
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A developing apparatus for developing electrostatic images comprises a container for containing a developer comprising magnetic material. A rotatable member is provided which is rotatable in the container in contact with the developer, the rotatable member being supported on bearings. A stationary magnetic member is disposed out of position inside the container and adjacent to the bearing with a clearance from the rotatable member, the stationary member enclosing the rotatable member. The stationary member has first and second magnetic poles disposed adjacent to each other and having the same magnetic polarity to form a repelling magnetic field to form a magnetic brush of the developer in a clearance between the magnetic member and the rotatable member.