PURPOSE: To prevent a cleaned-off body from scattering excellently by employing the constitution of a sheetlike guide member which allows sticking body on an image carrier moving to a cleaning position to pass and isolates and guides the removed body cleaned off by a cleaning member from the image carrier on its back side, and a sealing member arranged on the back surface side of the end part.

CONSTITUTION: The sealing member 15 is arranged on the side-end back surface side of the sheetlike guide member 12 in addition to an end part sealing member 14 provided at the opening side end of a housing 13. The residual developer on the image carrier 1 is on the right-hand side of a line P and the majority of the developer falls vertically by a blade 11, but part of it moves to the left-hand side (outside of an image formation area) of the line P along the abutting edge of the blade 11 to strike the end surface Q of the sealing member 15, thereby falling. At this time, the developer falls along the end surface Q of the sealing member 15 and is guided into the housing 13 through the back surface of the sheet-shaped guide member 12. At this time, even when D is ≤15mm, the leakage from the side end of the sheetlike guide member 12 is prevented completely.