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:
Jan. 05, 1993
Filed:
Mar. 27, 1990
Akira Watanabe, Yokohama, JP;
Masahiro Itoh, Yokohama, JP;
Yuji Sakemi, Yokohama, JP;
Hiroshi Satomura, Hatogaya, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A developing apparatus is provided with a container for accommodating a developer for containing magnetic particles, and a rotatable carrying member is disposed at least partly in the container and faces an image bearing member at a developing station. The rotatable developer carrying member carries the developer thereon to the developing position. A magnet is disposed in the developing carrying member and includes a plurality of magnets for conveying the developer. A magnetic member is disposed close to the circumferential surface of the developer carrying member and in a circumferential direction of the developing carrying member in a region thereof where the developer carrying member is disposed in the developer container, adjacent to a longitudinal end of the developer carrying member. The magnetic member is magnetized by the magnet and the magnetic member cooperates with the magnet to form a magnetic field for forming a magnetic brush of the developer in a gap between the magnetic member and the developer carrying member.