Electrophotography – Image formation – Transfer
Reexamination Certificate
2006-05-02
2006-05-02
Beatty, Robert (Department: 2852)
Electrophotography
Image formation
Transfer
C399S306000
Reexamination Certificate
active
07039349
ABSTRACT:
An image forming apparatus operable in a duplex print mode includes an image carrier and an image transferring device including a first and a second intermediate image transfer body whose surfaces are movable in contact with each other while forming a nip therebetween. Toner images are respectively transferred to opposite surfaces of a sheet using two pairs of conductive rollers that face each other via the first and second intermediate image transfer bodies at a nip. Two of the conductive rollers associated with the second intermediate image transfer body are transfer rollers respectively applied with one and the other of biases of opposite polarities.
REFERENCES:
patent: 4032463 (1977-06-01), Kawanishi et al.
patent: 4538901 (1985-09-01), Soumiya
patent: 4962394 (1990-10-01), Sohmiya et al.
patent: 5006896 (1991-04-01), Koichi et al.
patent: 5038175 (1991-08-01), Sohmiya et al.
patent: 5394231 (1995-02-01), Sudo et al.
patent: 5499078 (1996-03-01), Kurokawa et al.
patent: 5559590 (1996-09-01), Arai et al.
patent: 5570162 (1996-10-01), Sohmiya
patent: 5619311 (1997-04-01), Kurokawa et al.
patent: 5797077 (1998-08-01), Samizo et al.
patent: 6173148 (2001-01-01), Matsuda et al.
patent: 6347214 (2002-02-01), Kaneko
patent: 6556804 (2003-04-01), Lobel et al.
patent: 6574448 (2003-06-01), Mochimaru et al.
patent: 6643489 (2003-11-01), Omata et al.
patent: 6801742 (2004-10-01), Mochimaru et al.
patent: 2002/0015602 (2002-02-01), Mochimaru et al.
patent: 3-253881 (1991-11-01), None
patent: 2000-105513 (2000-04-01), None
patent: 2001331046 (2001-11-01), None
patent: 2002040720 (2002-02-01), None
U.S. Appl. No. 10/161,742, filed Jun. 5, 2002, Mochimaru et al.
U.S. Appl. No. 10/176,672, filed Jun. 24, 2002, Omata et al.
U.S. Appl. No. 10/252,104, filed Sep. 23, 2002, Mochimaru et al.
U.S. Appl. No. 10/321,455, filed Dec. 18, 2002, Omata et al.
U.S. Appl. No. 10/310,892, filed Dec. 6, 2002, Omata et al.
U.S. Appl. No. 10/424,077, filed Apr. 28, 2003, Suzuki et al.
U.S. Appl. No. 10/697,119, filed Oct. 31, 2003, Sohmiya et al.
Kaneko Chiemi
Sohmiya Norimasa
Beatty Robert
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Ricoh & Company, Ltd.
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