Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Junichi Matsumoto0
Tomoyuki Ichikawa0
Nobuo Iwata0
Natsumi Katoh0
Date of Patent
December 22, 2009
Patent Application Number
11516659
Date Filed
September 7, 2006
Patent Primary Examiner
Patent abstract
An image forming apparatus includes a conveying pipe configured to convey a developer and a magnetic field generation mechanism configured to generate a magnetic field inside the conveying pipe to affect the developer. The magnet is formed to have lower magnetic intensities at positions upstream and downstream from a middle position of the conveying pipe along a conveying direction of the conveying pipe than a magnetic intensity in the middle of the conveying pipe.
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