Electrophotography – Image formation – Fixing
Reexamination Certificate
2008-09-16
2008-09-16
Gray, David M (Department: 2852)
Electrophotography
Image formation
Fixing
C399S328000
Reexamination Certificate
active
11011369
ABSTRACT:
A fixing device includes a fixing member in contact with an unfixed image constituted of developer T on one side of a recording material P; and a pressure member pressed against the fixing member. The fixing device fixes the unfixed image onto the recording material P by causing the recording material P, charged so as to have a same polarity as a polarity of the developer T, to pass through a gap between the fixing member and the pressure member. In the fixing device, an inflow current into the fixing member Ih is 0 when the recording material P passes through the gap between the fixing member and the pressure member. This securely restrains the developer on the recording material from electrostatically offset to the side of the fixing device, thereby maintaining the formation of high quality images.
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Mitsuoka et al, “Development of High-Speed and Low-Energy Fusing System”, Japan Hardcopy 2004 Fall Meeting, Published Nov. 26, 2004, pp. 29-32.
Kagawa Toshiaki
Kida Hiroshi
Nanba Toyoaki
Shinkawa Tatsuya
Yamaji Kouji
Gray David M
Nixon & Vanderhye P.C.
Sharp Kabushiki Kaisha
Wong Joseph S.
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