Patent ID: 7493071
Filing Date: 2009-02-17
Classification: G03G

Abstract:
1. A cartridge, comprising: a developing roller for contacting a photosensitive member, the developing roller for carrying and supplying a developing agent to the photosensitive member; and a developing agent regulating device for regulating an amount of developing agent on the developing roller, wherein the developing agent regulating device includes a leaf spring portion and a developing roller contact portion engaged with a free end of the leaf spring portion, wherein the developing roller contact portion has a substantially constant cross section along an axial direction of the developing roller, wherein the developing roller contact portion is structured and arranged to provide a larger amount per unit area of the developing agent on a middle portion of the developing roller in the axial direction as compared with an amount of developing agent per unit area provided at end portions of the developing roller in the axial direction, and wherein the free end of the leaf spring portion is structured such that a middle portion thereof protrudes beyond end portions thereof when viewed in the axial direction of the developing roller.