发明授权
US08606150B2 Toner bearer, and developing device and image forming apparatus using same
失效
调色剂载体,以及使用其的显影装置和图像形成装置
- 专利标题: Toner bearer, and developing device and image forming apparatus using same
- 专利标题(中): 调色剂载体,以及使用其的显影装置和图像形成装置
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申请号: US13216496申请日: 2011-08-24
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公开(公告)号: US08606150B2公开(公告)日: 2013-12-10
- 发明人: Yasuyuki Yamashita , Ryohichi Kitajima , Shohei Gohda
- 申请人: Yasuyuki Yamashita , Ryohichi Kitajima , Shohei Gohda
- 申请人地址: JP Tokyo
- 专利权人: Ricoh Company, Ltd.
- 当前专利权人: Ricoh Company, Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Cooper & Dunham LLP
- 优先权: JP2010-205179 20100914; JP2010-205282 20100914
- 主分类号: G03G15/10
- IPC分类号: G03G15/10
摘要:
A toner bearer including an electroconductive substrate; an insulating layer located on the electroconductive substrate; multiple electrodes located on the insulating layer at regular intervals; an outermost layer located on the multiple electrodes; and a voltage applicator to apply a voltage between the electroconductive substrate and the multiple electrodes to form a periodically reversed electric field therebetween so that toner particles on the outermost layer hop, thereby forming a toner cloud above the outermost layer. The insulating layer includes a crosslinked material having a unit obtained from a fluorine-containing resin and a crosslinking agent. The fluorine-containing resin is selected from the group consisting of copolymers having a unit obtained from fluoroethylene having at least three fluorine atoms and a unit obtained from a vinyl ether monomer and copolymers including a unit obtained from tetrafluoroethylene and a unit obtained from a vinyl monomer.
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