Electrophotography – Image formation – Fixing
Reexamination Certificate
2005-08-31
2008-08-19
Ngo, Hoang (Department: 2852)
Electrophotography
Image formation
Fixing
C219S619000, C399S336000
Reexamination Certificate
active
07415234
ABSTRACT:
A fixing device of an image forming apparatus includes a fixing roller rotatably mounted on a moving path of a printing medium having a toner image transferred thereon to fuse the toner image on the printing medium, a heater mounted in the fixing roller to generate a magnetic field by applied voltage, thus heating the fixing roller, and at least one magnetic core disposed around the fixing roller to concentrate, onto the fixing roller, the magnetic field generated by driving the heater. Accordingly, a density difference of the magnetic field generated by the heater is minimized by disposing the at least one magnetic core around the fixing rollers, thus enabling a uniform fixing temperature.
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Korean Patent Office Action for corresponding Korean Patent Application No. 10-2004-0072836 dated Mar. 23, 2006.
Chae Young-min
Cho Durk-hyun
Han Sang-yong
Kim Hwan-guem
Kwon Joong-gi
Ngo Hoang
Samsung Electronics Co,. Ltd.
Staas & Halsey , LLP
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