Patent ID: 8027613
Filing Date: 2011-09-27
Classification: G03G

Abstract:
1. A developing device comprising: a case body including a contact portion; a developer carrier rotatably supported on the case body, the developer carrier having a circumferential surface at an end with respect to an axial direction of the developer carrier; and a first seal member contacting the developer carrier, the first seal member attached to a receiving portion of the case body, the receiving portion facing the circumferential surface, the first seal member including an inside surface that faces inside with respect to the axial direction, wherein the contact portion has a contact surface, wherein the inside surface includes a first area where the inside surface contacts the contact surface and a second area where the inside surface does not contact the contact surface, wherein the first area and the second area are arranged in a thickness direction of the first seal member, and wherein the second area is closer to the case body than the first area.