Patent ID: 7289756
Filing Date: 2007-10-30
Classification: G03G

Abstract:
1. A developer regulating member, which abuts against a developer carrying member, which carries a mono-component developer to regulate a layer thickness of the developer on the developer carrying member, said developer regulating member comprising: a supported portion to be supported by a support member; and an abutting portion, which abuts against the developer carrying member, surface roughness parameters of said abutting portion satisfying the following expressions (1) to (5): where Sm is a mean spacing [mm] of profile irregularities prescribed by JIS-B0601-1994, Rp is a maximum profile peak height [μm] prescribed by ISO4287-1997, Rpk is an initial wear height [μm] prescribed by DIN4776, Rvk is an oil retaining depth [μm] prescribed by DIN4776, and Mr