发明名称 |
DEVELOPING ROLLER, DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS INCLUDING DEVELOPING DEVICE |
摘要 |
A developing roller includes a roller main body disposed to face, without contact, an outer circumferential surface of an image carrier. The roller main body includes a resin coat layer that is formed on an outer circumferential surface of a base body that is made of a metal including aluminum, the resin coat layer being made of a resin material and having electric conductivity. An AC impedance Z obtained from an application of an AC voltage at a frequency in a range from 0.05 Hz to 100 Hz is equal to or higher than 100Ω, and a phase angle θ satisfies a relationship of 0 rad<θ<0.1 rad when a power factor is cos θ=Za/Z. |
申请公布号 |
US2015177644(A1) |
申请公布日期 |
2015.06.25 |
申请号 |
US201414572642 |
申请日期 |
2014.12.16 |
申请人 |
KYOCERA Document Solutions Inc. |
发明人 |
Shimizu Tamotsu;Kamiyama Yuji;Watanabe Akihiro;Yoneima Yoshinobu;Okada Shizuka;Saito Sakae;Oishi Yasuhiro |
分类号 |
G03G15/09 |
主分类号 |
G03G15/09 |
代理机构 |
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代理人 |
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主权项 |
1. A developing roller comprising:
a roller main body disposed to face, without contact, an outer circumferential surface of an image carrier, wherein the roller main body includes a resin coat layer that is formed on an outer circumferential surface of a base body that is made of a metal including aluminum, the resin coat layer being made of a resin material and having electric conductivity, and an AC impedance Z obtained from an application of an AC voltage at a frequency in a range from 0.05 Hz to 100 Hz is equal to or higher than 100Ω, and a phase angle θ satisfies a relationship of 0 rad<θ<0.1 rad when a power factor is cos θ=Za/Z. |
地址 |
Osaka JP |