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:
Jul. 13, 2004
Filed:
Jul. 09, 2001
Masaharu Iwai, Mooka, JP;
Masami Hosokawa, Mooka, JP;
Other;
Abstract
The object is to provide a magnet roller whereby picture quality can be improved by raising the magnetic flux density of the specified magnetic pole and/or other magnetic poles, and wherein this magnetic pole pattern can be achieved with low cost. In a magnet roller ( ) according to the invention that achieves this object, a plurality of magnet pieces ( ) are mounted at the periphery of a shaft ( ) by joining at joining faces and peaks ( ) of magnetic poles ( ) are generated on the lines of extension of joining faces ( ) by setting the directions of orientation magnetization ( ) of adjacent magnet pieces ( ) facing the joining faces ( ), the respective joining faces ( ) of the plurality of magnet pieces ( ) being provided along the roller radial directions.