Electrophotography – Image formation – Fixing
Reexamination Certificate
2011-08-09
2011-08-09
Porta, David (Department: 2884)
Electrophotography
Image formation
Fixing
C399S122000, C399S328000, C219S216000, C219S619000
Reexamination Certificate
active
07995958
ABSTRACT:
An image forming apparatus includes a fixing unit fixing a toner image onto a sheet. The fixing unit includes a heating member having a sheet conveyed region that is set in accordance with the size of the sheet. The fixing unit further includes a coil generating magnetic field, a fixed core forming a magnetic path, movable cores forming a magnetic path together with the fixed core and arranged along the sheet conveyed region, a shielding member arranged on at least one movable core and shielding magnetism, and a magnetism adjustment unit rotating at least one movable core to switch the position of the shielding member between a shielding position where the shielding member is positioned inside the sheet conveyed region to shield the magnetism and a retracted position where the shielding member is positioned outside the sheet conveyed region to permit pass of the magnetism.
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Asari Tamami
Gon Syoukou
Ishida Naoyuki
Kasama Kenichi
Kondo Akihiro
Eley Jessica L
Hespos Gerald E.
Kyocera Mita Corporation
Porco Michael J.
Porta David
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