A cleaning device for removing a developer remaining on an image bearing member from the image bearing member includes a cleaning device, including an elastic blade and a supporting member for supporting the elastic blade, for removing the developer remaining on the image bearing member from the image bearing member; an image bearing member bearing member including a supporting portion for rotatably supporting the image bearing member; and a removed developer accommodating container formed of a material having a thermal expansion coefficient different from that of a material for the supporting member. The image bearing member bearing member is fixed to the supporting member. The removed developer accommodating container is fixed to the supporting member. The image bearing member bearing member and the removed developer accommodating container are provided with a gap therebetween with respect to a longitudinal direction of the supporting member.