US 12,153,372 B2
Cleaning blade, lubricant leveling blade, process cartridge, and image forming apparatus
Masahiro Ohmori, Kanagawa (JP); Keiichiro Juri, Kanagawa (JP); and Hideki Kimura, Kanagawa (JP)
Assigned to RICOH COMPANY, LTD., Tokyo (JP)
Appl. No. 18/275,215
Filed by Masahiro Ohmori, Kanagawa (JP); Keiichiro Juri, Kanagawa (JP); and Hideki Kimura, Kanagawa (JP)
PCT Filed Jan. 27, 2022, PCT No. PCT/IB2022/050696
§ 371(c)(1), (2) Date Aug. 1, 2023,
PCT Pub. No. WO2022/172111, PCT Pub. Date Aug. 18, 2022.
Claims priority of application No. 2021-021849 (JP), filed on Feb. 15, 2021; and application No. 2021-107228 (JP), filed on Jun. 29, 2021.
Prior Publication US 2024/0255889 A1, Aug. 1, 2024
Int. Cl. G03G 21/00 (2006.01); G03G 21/18 (2006.01)
CPC G03G 21/0017 (2013.01) [G03G 21/0094 (2013.01); G03G 21/1814 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A cleaning blade for cleaning a rotating body, the cleaning blade comprising:
an edge layer having a tip portion that comes into contact with the rotating body; and
a coating layer on the tip portion of the edge layer,
wherein the coating layer includes a first fluorine-based resin and a second fluorine-based resin incompatible with the first fluorine-based resin,
wherein the cleaning blade has a Martens hardness of from 0.5 to 3 N/mm2 at a position 20 μm distant from a tip edge portion of the edge layer.