Image Forming Apparatus

An image forming apparatus comprising:

• an image forming unit including a plurality of photoconductor drums arranged in tandem;
• a conveyor belt arranged opposite to the plurality of photoconductor drums and configured to convey a recording sheet between the plurality of photoconductor drums and the conveyor belt;
• a cleaning unit including a cleaning member configured to be positioned in contact with the conveyor belt to collect substance adhering to the conveyor belt, and a receptacle configured to store the substance collected by the cleaning member, wherein the cleaning unit is arranged on the same side as the image forming unit with respect to the conveyor belt;
• and
• a positioning member configured to cause the cleaning member to be positioned at a contacting position where the cleaning member contacts with the conveyor belt and at a spaced-apart position where the cleaning member is away from the conveyor belt,
• wherein the cleaning member is moved to the spaced-apart position when the conveyor belt conveys the recording sheet.