Electrophotography – Control of electrophotography process – Control of fixing
Reexamination Certificate
2008-11-26
2011-12-13
Gray, David (Department: 2852)
Electrophotography
Control of electrophotography process
Control of fixing
C399S045000, C219S216000
Reexamination Certificate
active
08078072
ABSTRACT:
An image forming apparatus has an image forming station and a fixing unit. The fixing unit includes a coil for generating a magnetic field for induction heating the heating member. A first core made of a magnetic material is arranged fixedly around the coil. A second core made of a magnetic material is between the first core and the heating member in a generation direction of the magnetic field to form a magnetic path in cooperation with the first core and capable of changing a posture thereof. A shield made of a nonmagnetic metal is arranged along the outer surface of the second core to shield magnetism in the magnetic field and a magnetic shielding portion for changing the posture of the second core between a first posture where the shield shields the magnetism and a second posture where the shield does not shield the magnetism.
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Gon Syoukou
Ishida Naoyuki
Kasama Kenichi
Kondo Akihiro
Nakajima Eiji
Gray David
Hespos Gerald E.
Hyder G. M.
Kyocera Mita Corporation
Porco Michael J.
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