Patent ID: 7995946

Claim:
An image forming apparatus comprising: a plurality of process cartridges, each of the plurality of process cartridges including an image bearing member configured to bear a toner image and a process unit configured to act on the image bearing member, wherein the plurality of process cartridges are insertable into and drawn out of a body of an image forming apparatus; an optical unit provided below the plurality of image bearing members and including a plurality of transmission members configured to transmit light emitted toward the plurality of image bearing members; and a plurality of cleaning members configured to clean a surface of the plurality of transmission members, each of the plurality of cleaning members includes a sheet configured to move a foreign substance on the surface of the transmission member, and a wiping portion configured to wipe away a foreign substance on the surface of the transmission member, wherein the sheet and the wiping portion move in contact with the surface of the transmission member when the cleaning member cleans the surface of the transmission member, wherein the wiping portion moves in contact with a portion of the surface of the transmission member after the sheet moves in contact with the portion, wherein each of the plurality of process cartridges has an engaging portion that engages the cleaning member, and wherein each of the cleaning members to which the engaging portion is engaged moves in association with a movement of a corresponding process cartridge.