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US 2015/0344809 A1Published application
Drive device, image forming apparatus, and grease composition
AssigneesRicoh Company, Ltd., Dow Corning Toray Co., Ltd.
InventorsToshiyuki KABATA, Kumiko SEO, Masahiro ISHIDA, Naoki MATSUDA, Teruyoshi TANAKA
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Abstract
A drive device includes a plurality of gears; and a grease composition that is held on a tooth flank of at least one gear of the gears. The at least one gear is made of a resin. The grease composition contains a hydrocarbon base oil, lithium soap serving as a thickener, and olefin resin powder. A weight ratio between the hydrocarbon base oil and the lithium soap in the grease composition 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.
Claims10
A drive device comprising:
- a plurality of gears;
- and
- a grease composition that is held on a tooth flank of at least one gear of the gears, wherein
- the at least one gear is made of a resin,
- the grease composition contains a hydrocarbon base oil, lithium soap serving as a thickener, and olefin resin powder,
- a weight ratio between the hydrocarbon base oil and the lithium soap in the grease composition is in a range of 94.5:5.5 to 96.0:4.0, and
- a consistency of the grease composition is in a range of 360 to 400.
4 more elements
Dependencies are inferred from the claim text.