Patent ID: 9152076
Filing Date: 2015-10-06
Classification: G03G

Abstract:
1. A developing apparatus comprising: a developing roller rotatably carrying a developer to develop an electrostatic image formed on an image bearing member; a developing device frame supporting said developing roller and configured to include a developer accommodating portion for accommodating the developer; a sealing member provided at each of first and second opposite ends of said developing device frame with respect to a rotational axis direction of said developing roller and in contact with said developing roller to prevent leakage of the developer; and a developing blade in contact with said developing roller to regulate an amount of the developer carried on said developing roller, wherein said developing blade has a free end at a downstream side with respect to a rotational moving direction of said developing roller, a longitudinal end portion with respect to a lengthwise direction of said developing roller, a projection projecting from said longitudinal end portion in the lengthwise direction, an opposing surface opposed to said developing roller and a non-opposing surface opposite from said opposing surface, wherein said sealing member extends to ride on said projection from an upstream side of said projection with respect to the rotational direction of said developing roller so as to extend from the opposing surface side to the non-opposing side of said developing blade, and said sealing member urges said projection to said developing roller.