Patent ID: 8019258
Filing Date: 2011-09-13
Classification: G03G

Abstract:
1. A developing apparatus comprising: a developer bearing member configured to bear a developer for developing an electrostatic image formed on an image bearing member; and a developer amount regulating device configured to regulate an amount of the developer carried by the developer bearing member, wherein the developer amount regulating device includes: wherein the developer amount regulating member is held by the holding member by contact pressure of the surface where the pressing portion is provided against the when the developer amount regulating member is pressed against the developer bearing member; and wherein the developer amount regulating member is held by the holding member by contact pressure of the surface where the pressing portion is provided against the supporting portion due to a restoration force generated by the developer amount regulating member trying to revert from a bended shape, wherein the developer amount regulating device deforms the developer amount regulating member by pressing the developer amount regulating member against the developer bearing member so that pressure distribution includes two maximum values in a rotation direction of the developer bearing member in the pressing portion, and wherein the holding member includes a concave portion, the portion where the end face contacts is a bottom face of the concave portion, and the supporting portion is a side face of the concave portion.