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:
May. 10, 1988
Filed:
Aug. 31, 1987
Akira Yamamoto, Tokyo, JP;
Haruhisa Honda, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A device for conveying a magnetic developer, includes a non-magnetic sleeve for carrying the magnetic developer, a resin magnet stationarily disposed in the sleeve, the magnet being of a mixture of a resin material and a magnetic material, and extending in a direction of a length of the sleeve, the magnet having first and second magnetic field generating portions, first and second magnetic members disposed outside the sleeve extending in the direction of the length of the sleeve, wherein the first and second magnetic members are spaced apart from each other and are so disposed that a magnetic force applied to the magnet by a magnetic force between the first magnetic field generating portion and the first magnetic member reduces a resultant force to the magnetic by gravity and by a magnetic force between the second magnetic field generating portion and the second magnetic member.