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, 1983
Filed:
May. 13, 1980
Masashi Suda, Iruma, JP;
Junichiro Kanbe, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A developing apparatus includes a developer vessel for supplying one-component magnetic toner as a developer, a movable developer carrier having a surface for receiving the developer, a magnetic thickness limiting member disposed close to the surface of the carrier, a fixed magnet positioned within the carrier with a magnetic pole in facing relationship with the limiting member, a mounting assembly for mounting the limiting member for movement toward and away from the facing magnet pole and including a lock for maintaining the limiting member at a predetermined distance from the carrier. The carrier is preferably a sleeve, the shaft ends of which are mounted on the reservoir, with the magnet journaled to the sleeve with one end extending through the associated sleeve shaft and having a rotation preventing member connected thereto. The sleeve is rotated through a driving connection between a gear mounted on a latent image bearing member and one associated with the sleeve. The developer vessel may include an outer lid with a magnetic seal and an inner lid having edges which define an aperture and block reverse developer flow. The apparatus may further include felt sealing elements located adjacent to the opposite ends of the sleeve to direct developer inwardly along the sleeve away from the sleeve ends.