Patent ID: 9285712
Filing Date: 2016-03-15
CPC Classification: G03G

Claim Text:
1. A developing device to be used in an image forming apparatus, the developing device comprising: a frame member; a developing roller configured to develop a latent image formed on an image bearing member using developer; a developer supply roller configured to supply the developer to the developing roller; an end sealing member configured to prevent a leakage of the developer through a gap between the frame member and an end of the developing roller in a longitudinal direction thereof; a bush member having elasticity, the bush member being configured to prevent a leakage of the developer from gap between the frame member and an end of the developer supply roller in a longitudinal direction thereof; a first groove configured to fix the bush member; and an abutment portion configured to regulate movement of the bush member in the longitudinal direction, wherein the frame member includes a second groove formed in a wall portion that includes the abutment portion so as to be adjacent to the first groove in the longitudinal direction, and the second groove is configured to engage with the end of the developer supply roller.