Patent ID: 9746817
Date: 2017-08-29
CPC Classifications: G03G

Claim:
1. A cleaning blade, comprising: an elastic member, and a support member attached to an upper portion of the elastic member, wherein the elastic member is configured to abut on a surface of a cleaning target member at a bottom portion of the elastic member and remove a residual material deposited on the surface of the cleaning target member, and the elastic member satisfies requirements (a), (b) and (c) below, (a) an abutment part of the elastic member is disposed at a bottom portion of the elastic member and includes a reformed layer formed in the abutment part by reforming treatment to the abutment part, (b) a Martens hardness at a surface of the reformed layer is from 3.0 N/mm (c) a ratio H/L indicating a distribution of hardness in the reformed layer of the abutment part of the elastic member is from 0.03 (N/mm where H represents a maximum Martens hardness among Martens hardnesses measured at a plurality of positions in a region inward from the abutment part thicknesswise and where L represents a distance in a thickness direction from the surface of the reformed layer.