Title:
画像形成装置
Document Type and Number:
Japanese Patent JP4160542
Kind Code:
B2
Abstract:
In an image forming apparatus a primary transfer is carried out such that toner images on a plurality of photoreceptors are transferred and laminated onto an intermediate transfer member, and a recording paper and the intermediate transfer member are sandwiched between a secondary transfer roller disposed so as to be in contact with the intermediate transfer member and a secondary transfer counter roller disposed opposite to the secondary transfer roller, to carry out a secondary transfer that the toner images on the intermediate transfer member are transferred onto the recording paper. At the time, an electric field is applied to the recording paper, and further the secondary transfer counter roller is switched by a switch between grounded state and floating state so that a potential difference between the intermediate transfer member and the secondary transfer roller can be adjusted.
Inventors:
Susumu Murakami
Yoshie Iwakura
Kuniaki Nakano
Yoshie Iwakura
Kuniaki Nakano
Application Number:
JP2004223946A
Publication Date:
October 01, 2008
Filing Date:
July 30, 2004
Export Citation:
Assignee:
Sharp Corporation
International Classes:
G03G15/16; G03G15/14; G03G21/00
Foreign References:
| WO2002069056A1 |
Attorney, Agent or Firm:
Keiichiro Saikyo
Takeshi Sugiyama
Minetarou Hirose
Takeshi Sugiyama
Minetarou Hirose