An image forming apparatus may include: a process cartridge, an apparatus body and a spacing member. The process cartridge may be detachably mountable to the apparatus body and include a photosensitive unit having a photosensitive member, a developing unit having a developing roller, and a driving input part into which a driving force from the apparatus body is configured to be inputted. The apparatus body may include a driving input member which is configured to input the driving force. Additionally or alternatively, the spacing member may be attached to the process cartridge and configured to space the photosensitive member and the developing roller. The spacing member may include a first cover part which is located between the driving input part and the driving input member and covers at least a portion of the driving input part.