Patent ID: 9625852
Date: 2017-04-18
CPC Classifications: G03G

Claim:
1. A cleaning unit for an image forming apparatus, the cleaning unit comprising: a cleaning blade adapted to contact a rotatable image bearing member for removing developer from the image bearing member; a frame that includes a developer accommodating portion for accommodating the developer removed by the cleaning blade; a first sealing member sealing between the frame and the cleaning blade to prevent leakage of the developer from the developer accommodating portion; and a second sealing member sealing between the frame and the image bearing member to prevent leakage of the developer from the developer accommodating portion, the second sealing member being provided at a position opposing the cleaning blade in an axial direction of the image bearing member, wherein a gap is provided between the cleaning blade and the second sealing member in the axial direction, and wherein the first sealing member includes a rib extending in the axial direction, the rib (a) overlapping the gap in a stacking direction in which the frame, the first sealing member, and the cleaning blade are sequentially stacked, and (b) being compressed by the cleaning blade, the second sealing member, and the frame.