| US 7,610,003 B2 | ||
| Image forming apparatus for recycling toner | ||
| Takeshi Watanabe, Yokohama (Japan); Masashi Takahashi, Yokohama (Japan); and Minoru Yoshida, Machida (Japan) | ||
| Assigned to Kabushiki Kaisha Toshiba, Tokyo (Japan); and Toshiba Tec Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Aug. 15, 2007, as Appl. No. 11/889,639. | ||
| Application 11/889639 is a division of application No. 11/082243, filed on Mar. 17, 2005, granted, now 7,266,332. | ||
| Prior Publication US 2007/0280746 A1, Dec. 06, 2007 | ||
| Int. Cl. G03G 15/01 (2006.01); G03G 15/06 (2006.01) | ||
| U.S. Cl. 399—299 [399/66] | 10 Claims |
| 1. An image forming apparatus configured to form a color image comprising:
a first to a fourth image forming stations each comprising an image carrier,
a developing device which is provided on the image carrier, retains a developing agent containing a toner and a carrier and
forms a toner image on the image carrier, and a mechanism which collects the toner remaining on the image carrier after toner
image transfer by the developing device; and a first to a fourth toner image transfer sections provided in accordance with
each of image stations, which transfer each toner image onto a transfer medium and are provided on in order with regard to
the transfer medium conveying direction;
wherein, in the second and third image forming station, a contact nip width between the transfer medium and the image carrier
is larger than a nip width between the transfer medium and a transfer member having a voltage applied thereto, and a plurality
of transfer members are provided;
each of the second and the third toner image transfer sections has the transfer efficiency higher than that of the first and
the fourth transfer sections.
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