Electrophotography – Image formation – Transfer
Patent
1997-01-09
1999-07-13
Brase, Sandra L.
Electrophotography
Image formation
Transfer
399302, 399314, G03G 1516
Patent
active
059239395
ABSTRACT:
An image forming apparatus for forming a toner image on a transfer material using an intermediary transfer member includes an image bearing member; a toner image forming member for forming a toner image on the image bearing member; an intermediary transfer member in contact with the image bearing member; a first bias applying member for forming a first transfer bias between the image bearing member and the intermediary transfer member to effect primary transfer of the toner image; a second bias applying member for forming a second transfer bias between the intermediary transfer member and transferring member to effect secondary transfer of the toner image; third bias applying member for applying a voltage to an electrode for charging residual toner remaining on the intermediary transfer member to transfer the residual toner back onto the image bearing member, after the transfer; wherein the first, second and third bias applying members are capable of applying bias voltages of opposite polarities; whereby the apparatus is operable in: a first cleaning mode wherein the residual toner is transferred back onto the image bearing member simultaneously with the primary transfer; a second cleaning mode electrostatically shifting the toner deposited on the transferring member onto the intermediary transfer member; a third cleaning mode where the toner deposited on the electrode is electrostatically shifted onto the intermediary transfer member.
REFERENCES:
patent: 4461563 (1984-07-01), Favata
patent: 5079597 (1992-01-01), Mauer et al.
patent: 5132738 (1992-07-01), Nakamura et al.
patent: 5173735 (1992-12-01), Kusumoto
patent: 5179397 (1993-01-01), Ohzeki et al.
patent: 5187526 (1993-02-01), Zaretsky
patent: 5198863 (1993-03-01), Goto et al.
patent: 5264902 (1993-11-01), Suwa et al.
patent: 5285245 (1994-02-01), Goto et al.
patent: 5337127 (1994-08-01), Imaue
patent: 5410393 (1995-04-01), Watanabe
patent: 5438398 (1995-08-01), Tanigawa et al.
patent: 5485256 (1996-01-01), Randall et al.
patent: 5519475 (1996-05-01), Miyamoto et al.
patent: 5521687 (1996-05-01), Bors et al.
patent: 5565975 (1996-10-01), Kumon
U.S. application No. 08/633,470, Koichi Hiroshima, et al., Filed Apr. 17, 1996.
Brase Sandra L.
Canon Kabushiki Kaisha
LandOfFree
Image forming apparatus employing intermediary transfer member does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Image forming apparatus employing intermediary transfer member, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image forming apparatus employing intermediary transfer member will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2287042