Image forming apparatus having spacing configuration for process cartridge

An image forming apparatus comprising:

• an apparatus body including a driving input member;
• a process cartridge detachably mounted to the apparatus body, the process cartridge including:
• a photosensitive drum;
• a developing roller configured to supply developer to the photosensitive drum, the developing roller movable between a first position and a second position, the second position farther from the photosensitive drum than the first position;
• and
• a coupling rotatable about a rotational axis, the coupling being configured to be engaged with the driving input member, the coupling configured to transmit a driving force from the driving input member to the developing roller;
• and
• a spacing member detachably attached to the process cartridge, wherein the developing roller is positioned in the second position when the spacing member is attached to the process cartridge and the developing roller is positioned in the first position when the spacing member is detached from the process cartridge, the spacing member including:
• a cover part located between the coupling of the process cartridge and the driving input member of the apparatus body, the cover part covering the coupling of the process cartridge.