Electrophotography – Image formation – Transfer
Reexamination Certificate
2011-08-23
2011-08-23
Chen, Sophia S (Department: 2852)
Electrophotography
Image formation
Transfer
C399S066000, C399S315000, C399S400000
Reexamination Certificate
active
08005412
ABSTRACT:
A neutralizing mechanism is provided on at least one conveying path proximal member installed on a conveying path of a sheet material in a vicinity of a transfer position, and is grounded by using a conducting material. The neutralizing mechanism includes a neutralizing circuit that includes a resistor and a ground switch electrically connected in parallel to each other. The ground switch is turned off at least at a time of applying the transfer bias to prevent a leakage of a transfer current, and turned on for a predetermined time at a time other than the time of applying the transfer bias to earth and remove a static electricity from the conveying path proximal member.
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Etoh Takuya
Kichise Mitsutoshi
Meguro Yuuji
Muramatsu Takeru
Sakashita Takeshi
Chen Sophia S
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ricoh Company Limited
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