发明名称 |
DRIVE DEVICE, IMAGE FORMING APPARATUS, AND GREASE COMPOSITION |
摘要 |
A drive device includes a gear having a hole; a shaft that passes through the hole; and a grease composition that is held in a clearance between the shaft and an inner peripheral surface of the hole. The gear rotates on a peripheral surface of the shaft. At least one of the gear and the shaft is made of a resin. The clearance is in a range of 10 to 110 µm. The grease composition contains a hydrocarbon base oil and lithium soap serving as a thickener. A weight ratio of the hydrocarbon base oil to the lithium soap is in a range of 94.5:5.5 to 96.0:4.0. A consistency of the grease composition is in a range of 360 to 400. |
申请公布号 |
EP2949736(B1) |
申请公布日期 |
2016.12.21 |
申请号 |
EP20150169235 |
申请日期 |
2015.05.26 |
申请人 |
Ricoh Company, Ltd.;Dow Corning Toray Co., Ltd. |
发明人 |
Kabata, Toshiyuki;Seo, Kumiko;Ishida, Masahiro;Matsuda, Naoki;Tanaka, Teruyoshi |
分类号 |
C10M117/04;B65H3/06;C10N10/02;C10N40/06;C10N50/10;F16H57/00;F16H57/04;G03G15/00 |
主分类号 |
C10M117/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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