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US 11,442,396 B2Granted
Cleaning blade, sheet conveyance roller, process cartridge, and image forming apparatus
AssigneeRicoh Company, Ltd.
InventorsKazuhiko Watanabe, Hiroshi Nakai, Masahiro Ohmori
Life of this patent
Estimating the term…
Abstract
A cleaning blade includes a blade member including a ridgeline portion. The ridgeline portion contains polyrotaxane. A sheet conveyance roller includes a core and a surface layer. The surface layer contains polyrotaxane.
Claims12
A cleaning blade configured to mechanically remove a substance from an image bearer, the cleaning blade comprising:
- a blade member including an edge layer and a backup layer layered on the edge layer, the edge layer including a ridgeline portion configured to contact the image bearer, the ridgeline portion made of urethane rubber containing polyrotaxane and the backup layer including polyrotaxane at an amount smaller than that of the ridgeline portion.
A cleaning blade configured to mechanically remove a substance from an image bearer, the cleaning blade comprising:
- a blade member including an edge layer and a backup layer layered on the edge layer, the edge layer including a ridgeline portion configured to contact the image bearer, the ridgeline portion made of urethane rubber containing polyrotaxane and the backup layer including polyrotaxane at an amount smaller than that of the ridgeline portion, the ridgeline portion having a volume resistivity of 1×1010 Ω·cm or more.
Dependencies are inferred from the claim text.