发明授权
- 专利标题: Developing device and image forming apparatus
- 专利标题(中): 显影装置和图像形成装置
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申请号: US12076109申请日: 2008-03-13
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公开(公告)号: US08000639B2公开(公告)日: 2011-08-16
- 发明人: Hiroshi Goto , Takuya Okada
- 申请人: Hiroshi Goto , Takuya Okada
- 申请人地址: JP Chiyoda-Ku, Tokyo
- 专利权人: Konica Minolta Business Technologies, Inc.
- 当前专利权人: Konica Minolta Business Technologies, Inc.
- 当前专利权人地址: JP Chiyoda-Ku, Tokyo
- 代理机构: Buchanan Ingersoll & Rooney PC
- 优先权: JP2007-067223 20070315
- 主分类号: G03G15/08
- IPC分类号: G03G15/08
摘要:
A developing device is disclosed that is capable of preventing the hysteresis phenomenon, and which contains a toner and a carrier. The toner and the carrier are charged to different polarities by frictional contact thereof. The developing device has a first conveyance member and a second conveyance member which faces an electrostatic latent image bearing body via the second region. An electric field forming device forms a first electric field between the first conveyance member and the second conveyance member to move the toner in the developer retained by the first conveyance member to the second conveyance member, and forms a second electric field between the second conveyance member and the electrostatic latent image bearing body to move the toner retained by the second conveyance member to an electrostatic latent image of the electrostatic latent image bearing body.
公开/授权文献
- US20080226350A1 Developing device and image forming apparatus 公开/授权日:2008-09-18
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