Image forming apparatus and process cartridge
US-2024427260-A1 · Dec 26, 2024 · US
Charging roll for electrophotographic apparatus
US2018231908A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2018231908-A1 |
| Application number | US-201815955828-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 18, 2018 |
| Priority date | Mar 25, 2016 |
| Publication date | Aug 16, 2018 |
| Grant date | — |
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- Title
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Abstract
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To provide a charging roll for an electrophotographic apparatus that is excellent in charging performance while suppressing adhesion of toner particles. A charging roll 10 includes a shaft body 12, an elastic body layer 14 provided on the outer periphery of the shaft body 12, and a surface layer 16 provided on the outer periphery of the elastic body layer 14. The surface layer 16 contains cellulose nanofibers, and has pores generated on the surface thereof due to overlapping of the cellulose nanofibers, and the pores have a diameter of 0.05 to 30 micrometers. The surface layer 16 preferably contains no binder resin or contains a binder resin at a content of 5 mass % or less with respect to the total content of the surface layer 16.
First claim
Opening claim text (preview).
1 . A charging roll for an electrophotographic apparatus comprising: a shaft body; an elastic body layer provided on an outer periphery of the shaft body; and a surface layer provided on an outer periphery of the elastic body layer, the surface layer comprising cellulose nanofibers, wherein the surface layer has pores having a diameter of 0.05 to 30 micrometers, the pores generated due to overlapping of the cellulose nanofibers, and the surface layer does not comprise a binder resin or comprises a hydrophilic binder resin at a content of 5 mass % or less with respect to the total content of the surface layer, and has a surface area in the range of 300 to 60000 μm 2 .
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Classifications
Conductive · CPC title
on metal layer · CPC title
comprising aluminium or copper {(B32B15/016 and B32B15/017 take precedence)} · CPC title
using interposed adhesives or interposed materials with bonding properties · CPC title
comprising {synthetic rubber copolymers (B32B25/18 and B32B25/20 take precedence)} · CPC title
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- What does patent US2018231908A1 cover?
- To provide a charging roll for an electrophotographic apparatus that is excellent in charging performance while suppressing adhesion of toner particles. A charging roll 10 includes a shaft body 12, an elastic body layer 14 provided on the outer periphery of the shaft body 12, and a surface layer 16 provided on the outer periphery of the elastic body layer 14. The surface layer 16 contains cellu…
- Who is the assignee on this patent?
- Sumitomo Riko Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification G03G15/0233. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Aug 16 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).