Development device

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9436132
APP PUB NO 20160091830A1
SERIAL NO

14863285

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Abstract

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A development device including a plurality of development sleeves and conducting development sleeve end portion seal using magnet members, a second magnetic pole and a third magnetic pole of a magnet incorporated in a second developer bearing member form repulsive poles. A position on the magnet member facing a rotation direction downstream end of the second developer bearing member is configured to be included in a zero Gauss zone. As a result, developer leak in the development sleeve rotation direction from between two development sleeves is suppressed.

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Patent Owner(s)

Patent OwnerAddress
CANON KABUSHIKI KAISHA30-2 SHIMOMARUKO 3-CHOME OHTA-KU TOKYO 146-8501

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Furukawa, Mitsuhiro Chofu, JP 57 305

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