Image forming apparatus

A method associated with an image forming apparatus, comprising:

• rotating a first rotator about a first shaft in a first direction and a second direction reverse to the first direction;
• transmitting a driving force of the first rotator to a second rotator to rotate the second rotator about a second shaft when the first rotator is rotated in the first direction, the second rotator parallel to the first rotator and detachably connected to a process unit for forming an image;
• and
• releasing a connection between the second rotator and the process unit by displacing the second rotator in a second shaft direction when the first rotator is rotated in the second direction.

An image forming apparatus, comprising:

• a process unit configured to form an image;
• a first rotator configured to rotate about a first shaft in a first direction and a second direction reverse to the first direction;
• a second rotator parallel to the first rotator and detachably connected to the process unit;
• a driving force transmission mechanism configured to transmit a driving force of the first rotator to the second rotator to rotate the second rotator about a second shaft when the first rotator is rotated in the first direction, the driving force transmission mechanism comprising two gears;
• and
• a displacement mechanism configured to release connection between the second rotator and the process unit by displacing the second rotator in a second shaft direction when the first rotator is rotated in the second direction.