Patent ID: 8781377
Filing Date: 2014-07-15
Classification: G03G

Abstract:
1. A developing device comprising: a housing made of resin; a developer carrier, which is rotatably supported by the housing, and which is configured to carry developer on a circumferential surface thereof; a receiving-side coupling member, which is provided rotatably to one of end portions in a rotational axial direction of the developer carrier, and which is configured to couple with a driving-side coupling member in the rotational axial direction and to transmit driving force to the developer carrier when rotating with the driving-side coupling member, wherein the driving-side coupling member is external to the developing device; a blade, which is provided along the rotational axial direction, and which is configured to contact the circumferential surface of the developer carrier and to regulate a layer thickness of the developer on the circumferential surface of the developer carrier; and a support member, which is bent into an L-shape in a plane normal to the rotational axial direction, and which supports the blade, wherein the receiving-side coupling member is overlapped with a bending portion of the support member, in a direction parallel to the rotational axial direction, wherein the receiving-side coupling member comprises a coupling portion configured to couple with the driving-side coupling member, wherein the coupling portion comprises a recessed portion, which is exposed to an outside of the housing in the rotational axial direction, and which is configured to interface with the driving-side coupling member, and wherein the receiving-side coupling member is overlapped with the entire support member in the direction parallel to the rotational axial direction.