Pressurizing member, fixing device, and electrophotographic image-forming apparatus
US-11644777-B2 · May 9, 2023 · US
Fixing member, method for producing the same, fixing apparatus, and electrophotographic image forming apparatus
US11988983B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11988983-B2 |
| Application number | US-202217937735-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 3, 2022 |
| Priority date | Oct 4, 2021 |
| Publication date | May 21, 2024 |
| Grant date | May 21, 2024 |
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- Title
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Abstract
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A fixing member having a base layer and a surface layer, wherein the surface layer includes a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, and having at least one pore communicating with an opening on an outer surface thereof. A composition containing perfluoropolyether and a fluoropolymer is contained in at least a part of the at least one pore. The fluoropolymer has a particular repeating unit composed of perfluoropolyether, and at least one structure selected from the group consisting of a T unit of siloxane and a Q unit of siloxane.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for producing a fixing member comprising a base layer and a surface layer, comprising the following step (I) to step (V): (I): providing a layered product having a base layer and a resin layer containing a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA), (II): bringing a first perfluoropolyether that has been heated to a temperature in the vicinity of a melting point of the PFA into contact with a first surface constituting an outer surface of the resin layer to impregnate the resin layer with the first perfluoropolyether, (III): cooling to room temperature the layered product obtained in the step (II) in which the resin layer is impregnated with the first perfluoropolyether, (IV): removing, from the first surface side of the resin layer, at least a part of the first perfluoropolyether impregnated in the resin layer using a fluorine-based solvent to thereby form at least one pore opened on the first surface of the resin layer, in the resin layer, and (V): allowing at least a part of the at least one pore to contain a mixture containing a second perfluoropolyether and a mixture for forming a fluoropolymer, and curing the mixture for forming the fluoropolymer, wherein the surface layer contains a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, and having a pore communicating with an opening on an outer surface thereof, a composition containing perfluoropolyether and a fluoropolymer is contained in at least a part of the pore, wherein the fluoropolymer has a repeating unit represented by the following structural formula (1), and at least one structure selected from the group consisting of a T unit of siloxane and a Q unit of siloxane: wherein n represents a positive integer.
Assignees
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Classifications
- G03G15/2057Primary
relating to the chemical composition of the heat element and layers thereof · CPC title
the fixing nip having a stationary belt support member opposing a pressure member · CPC title
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- What does patent US11988983B2 cover?
- A fixing member having a base layer and a surface layer, wherein the surface layer includes a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, and having at least one pore communicating with an opening on an outer surface thereof. A composition containing perfluoropolyether and a fluoropolymer is contained in at least a part of the at least one pore. The fluoropolymer has a particular …
- Who is the assignee on this patent?
- Canon Kk
- What technology area does this patent fall under?
- Primary CPC classification G03G15/2057. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue May 21 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).