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US 11,414,620 B2Granted
Lubricant composition, sliding apparatus, fixing apparatus, and image-forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsYoshihito Oshima, Yohei Miyauchi, Yasuharu Notoya
Life of this patent
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Abstract
Provided is a lubricant composition having small shear rate dependence of its apparent viscosity. The lubricant composition includes a perfluoropolyether as a base oil, and fluorine resin particles as a thickener. The lubricant composition further includes a fluorine-containing polymer having a tetrafluoroethylene structure under a state in which the polymer is dissolved in the perfluoropolyether.
Claims7
A lubricant composition comprising:
- a perfluoropolyether as a base oil;
- fluorine resin particles as a thickener;
- and
- a fluorine-containing polymer having a tetrafluoroethylene structure under a state in which the fluorine-containing polymer is dissolved in the perfluoropolyether,
- wherein the fluorine resin particles are particles of polytetrafluoroethylene,
- wherein the fluorine-containing polymer has a structure represented by structural formula (7) or structural formula (8):
- where n7 and m7 each independently represents an integer of 1 or more,
- where n8 and m8 each represents an integer of 1 or more,
- wherein a content of the fluorine resin particles in the lubricant composition is 10 mass % to 50 mass %, and
- wherein an amount of the fluorine-containing polymer dissolved in the perfluoropolyether with respect to the perfluropolyether is from 0.05 mass % to 10.00 mass %.
7 more elements
A sliding apparatus comprising a sliding portion in which two members are brought into contact with each other through a lubricant composition, and at least one of the members is slidable with respect to another,
- wherein the lubricant composition comprises:
- a perfluoropolyether as a base oil;
- fluorine resin particles as a thickener;
- and
- a fluorine-containing polymer having a tetrafluoroethylene structure under a state in which the fluorine-containing polymer is dissolved in the perfluoropolyether,
- wherein the fluorine resin particles are particles of polytetrafluoroethylene,
- wherein the fluorine-containing polymer has a structure represented by structural formula (7) or structural formula (8):
- where n7 and m7 each independently represents an integer of 1 or more,
- where n8 and m8 each represents an integer of 1 or more,
- wherein a content of the fluorine resin particles in the lubricant composition is 10 mass % to 50 mass %, and
- wherein an amount of the fluorine-containing polymer dissolved in the perfluoropolyether with respect to the perfluropolyether is from 0.05 mass % to 10.00 mass %.
8 more elements
A fixing apparatus comprising a sliding portion in which two members are brought into contact with each other through a lubricant composition, and at least one of the members is slidable with respect to another,
- wherein the lubricant composition comprises:
- a perfluoropolyether as a base oil;
- fluorine resin particles as a thickener;
- and
- a fluorine-containing polymer having a tetrafluoroethylene structure under a state in which the fluorine-containing polymer is dissolved in the perfluoropolyether,
- wherein the fluorine resin particles are particles of polytetrafluoroethylene,
- wherein the fluorine-containing polymer has a structure represented by structural formula (7) or structural formula (8):
- where n7 and m7 each independently represents an integer of 1 or more,
- where n8 and m8 each represents an integer of 1 or more,
- wherein a content of the fluorine resin particles in the lubricant composition is 10 mass % to 50 mass %, and
- wherein an amount of the fluorine-containing polymer dissolved in the perfluoropolyether with respect to the perfluropolyether is from 0.05 mass % to 10.00 mass %.
8 more elements
A fixing apparatus comprising:
- a fixing belt having an endless shape;
- a pressurizing member;
- and
- a heater configured to heat the fixing belt with non-radiant heat,
- the fixing apparatus being configured to heat a recording medium having an unfixed toner image in a nip formed by the fixing belt and the pressurizing member to fix the unfixed toner image to the recording medium,
- wherein an inner peripheral surface of the fixing belt and at least a part of the heater are brought into contact with each other through a lubricant composition, and the lubricant composition comprises:
- a perfluoropolyether as a base oil;
- fluorine resin particles as a thickener;
- and
- a fluorine-containing polymer having a tetrafluoroethylene structure under a state in which the fluorine-containing polymer is dissolved in the perfluoropolyether,
- wherein the fluorine resin particles are particles of polytetrafluoroethylene,
- wherein the fluorine-containing polymer has a structure represented by structural formula (7) or structural formula (8):
- where n7 and m7 each independently represents an integer of 1 or more,
- where n8 and m8 each represents an integer of 1 or more,
- wherein a content of the fluorine resin particles in the lubricant composition is 10 mass % to 50 mass %, and
- wherein an amount of the fluorine-containing polymer dissolved in the perfluoropolyether with respect to the perfluropolyether is from 0.05 mass % to 10.00 mass %.
13 more elements
An image-forming apparatus comprising a sliding portion in which two members are brought into contact with each other through a lubricant composition, and at least one of the members is slidable with respect to another,
- wherein the lubricant composition comprises:
- a perfluoropolyether as a base oil;
- fluorine resin particles as a thickener;
- and
- a fluorine-containing polymer having a tetrafluoroethylene structure under a state in which the fluorine-containing polymer is dissolved in the perfluoropolyether,
- wherein the fluorine resin particles are particles of polytetrafluoroethylene,
- wherein the fluorine-containing polymer has a structure represented by structural formula (7) or structural formula (8):
- where n7 and m7 each independently represents an integer of 1 or more,
- where n8 and m8 each represents an integer of 1 or more,
- wherein a content of the fluorine resin particles in the lubricant composition is 10 mass % to 50 mass %, and
- wherein an amount of the fluorine-containing polymer dissolved in the perfluoropolyether with respect to the perfluropolyether is from 0.05 mass % to 10.00 mass %.
8 more elements
Dependencies are inferred from the claim text.