Patent ID: 7616913

Claim:
A cleaning device comprising: a cleaning roller that comprises a core and a cleaning member provided around the core, the cleaning member contacting and cleaning a charging roller by rotation of the cleaning roller, the charging roller charging an image carrier carrying an image; a supporting portion supporting the core rotatably in a state in which the cleaning member is in contact with the charging roller; and a guiding portion movably guiding the core, which is supported by the supporting portion, in a direction different from a direction of a straight line passing through a rotational center of the charging roller and a rotational center of the cleaning roller, wherein the guiding portion has a first contacting portion, which contacts a peripheral surface of a first side portion of the core, and a second contacting portion, which contacts a peripheral surface of a second side portion of the core, and the first side portion and the second side portion are at opposing sides of the core, the first contacting portion contacts the peripheral surface at a side which is far from the charging roller as compared with the second contacting portion, and the first contacting portion and the second contacting portion contact the core at the same time.