Electrophotography – Control of electrophotography process – Control of transfer
Reexamination Certificate
2006-09-05
2006-09-05
Grimley, Arthur T. (Department: 2852)
Electrophotography
Control of electrophotography process
Control of transfer
C399S071000, C399S088000
Reexamination Certificate
active
07103295
ABSTRACT:
An image forming apparatus includes an image bearing member that bears a toner image; an intermediate transferring material; a transferring unit that transfers a toner image on the image bearing member to the intermediate transferring material; a bias applying unit that applies a bias to the transferring unit; a cleaning unit that contacts and cleans the surface of the image bearing member; a toner supplying unit that, when an image is not being formed, passes a toner image for supply that is formed on the image bearing member through a transferring position to supply the toner image for supply to the cleaning unit; and a switching unit that switches from a state in which the power supply portion is electrically connected to the bias applying unit to a state in which a resistance value between the power supply portion and a ground is 100 MΩ or more.
REFERENCES:
patent: 6321059 (2001-11-01), Tamura
patent: 2003/0063928 (2003-04-01), Matsuguma
patent: 2004/0091276 (2004-05-01), Yoshida et al.
patent: 5-224497 (1993-09-01), None
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patent: 2002-323803 (2002-11-01), None
Arimura Koji
Hisakuni Hisataka
Kidaka Hiroyuki
Oki Makoto
Takura Keizo
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Grimley Arthur T.
Roth Laura K.
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