Control mechanism and method for controlling rotation of a photosensitive drum in an image forming apparatus when a cover member of the image forming apparatus is opened

An image forming apparatus comprising:

• a main body having an opening section;
• a cover which is attached to the main body, and which can be moved between a first position where the opening section is covered and a second position where the opening section is uncovered;
• a photosensitive member which is provided to be rotated in the main body of the apparatus facing the opening section;
• a developer which is provided in the main body of the apparatus to form a toner image by sticking toner on the photosensitive member at a developing position;
• a transfer roller which is provided in the main body of the apparatus attached to an inner surface of the cover to face the photosensitive member, and which transcribes the toner image formed on the photosensitive member to recording paper at a transcribing position on a downstream side from the developing position, in a rotating direction of the photosensitive member;
• and
• a control mechanism which is provided on the main body of the apparatus to rotate the photosensitive member by a distance larger than a distance between the developing position and the transcribing position when the cover is moved at least one of:
• (i) from the first position to the second position, and (ii) from the second position to the first position.