Pressing rotating member and production method thereof, fixing apparatus, and electrophotographic image forming apparatus
US11561495B2 · kind B2 · utility
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13References
10Claims
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Key dates
| Filing date | Dec 17, 2021 |
| Grant date | Jan 24, 2023 |
| Priority date | — |
| Expiry date | Dec 17, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2035
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A pressing rotating member comprising a base layer, an elastic layer and a surface layer, in this order, the surface layer having pores, wherein when placing an observation region of 8 μm long×11 μm wide at a cross section of the surface layer in a thickness direction of the surface layer—a direction perpendicular to a circumferential direction of the pressing rotating member, a degree of orientation f of the pores observed in the observation region is 0.20 or higher, and an orientation angle Φ of the pores observed in the observation region is 0° to 10°.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.