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. 14, 1992
Filed:
Jan. 14, 1991
Masaaki Yamaji, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A magnet is disposed stationarily in a rotatable developing sleeve. The magnet at least has a developing magnetic pole and a conveying magnetic pole disposed adjacent to it and downstream of it. In the magnetic flux density distribution of the conveying pole, an inflection point is provided upstream of the maximum magnetic flux density position in the magnetic flux density distribution. The point of inflection is defined as the point where the secondary differentiation of the magnetic flux density Br (gauss), which is .delta..sup.2 Br/.delta..sup.2 .THETA., equals zero. The result of setting the inflection point to such a position is an improvement of developer conveying power.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile