发明授权
- 专利标题： Developing roller, developing device, and image forming apparatus including developing device
- 专利标题（中）： 显影辊，显影装置和包括显影装置的图像形成装置
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申请号： US14571152申请日： 2014-12-15
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公开(公告)号： US09122193B2公开(公告)日： 2015-09-01
- 发明人: Yoshinobu Yoneima , Yuji Kamiyama , Akihiro Watanabe , Tamotsu Shimizu , Shizuka Okada , Sakae Saito , Yasuhiro Oishi , Chikara Ishihara , Masashi Fujishima , Yoshimi Shimizu , Yasuhiro Tauchi , Yu Sasaki
- 申请人： KYOCERA Document Solutions Inc.
- 申请人地址： JP Osaka-shi
- 专利权人： KYOCERA Document Solutions Inc.
- 当前专利权人： KYOCERA Document Solutions Inc.
- 当前专利权人地址： JP Osaka-shi
- 代理机构： Alleman Hall McCoy Russell & Tuttle LLP
- 优先权： JP2013-264428 20131220
- 主分类号： G03G15/09
- IPC分类号： G03G15/09 ; G03G15/08
摘要：
A developing roller includes a roller main body disposed to face, without contact, an outer circumferential surface of an image carrier. A resin coat layer has been formed on an outer circumferential surface of the roller main body, the resin coat layer being made of a resin material having electric conductivity. A product of resistance component Rs [Ω] and electrostatic capacitance component Cs [F] in AC impedance Z of the roller main body is in a range from 2.79×10−7 to 6.77×10−5, the AC impedance Z being obtained when an AC voltage of a predetermined frequency f is applied.
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