Device including roller, and image forming apparatus and process cartridge incorporating same

A device disposed opposing an image bearer to bear a toner image, the device comprising;

• a roller to rotate while contacting a surface of the image bearer:
• a rolling bearing fitted around a shaft located at an end of the roller in an axial direction of the roller, the rolling bearing including:
• an outer ring;
• an inner ring;
• and
• a rolling element disposed between the outer ring and the inner ring;
• a frame to house the roller;
• a bearing support removably attached to the frame, the bearing support to hold, from an outer-ring side, the rolling bearing interposed between the bearing support and the frame, the bearing support including a receiving portion to contact the outer ring of the rolling bearing and bias the rolling bearing toward the frame in a direction which the rolling bearing is interposed between the bearing support and the frame;
• and
• an elastic body disposed between the outer ring of the rolling bearing and the frame.

A device disposed opposing an image bearer to bear a toner image, the device comprising;

• a roller to rotate while contacting a surface of the image bearer;
• a fame to house the roller;
• a ball bearing including:
• an outer ring disposed in contact with the frame to determine a position of the outer ring relative to the frame in an axial direction of the roller;
• an inner ring to fit around a shaft of the roller to determine a position of the inner ring relative to the roller in the axial direction;
• and
• a ball disposed between the outer ring and the inner ring;
• and
• a biasing member to bias the inner ring, together with the roller, to one side in the axial direction of the roller.