Upon depression of a copy execution button 8, an image recording apparatus 1 executes a copy processing by causing an ink jet printer 37 to record the image data read by an image reading part 21 on recording paper. The supplemental controllers are enabled during coasting operation so that operators can advance to the base of the forks to accelerate the trucks between closely spaced picks located along substantially straight portions of pick routes. Rotation of the outer magnets 1 coupled to the driving side causes the inner magnet 2 coupled to the driven side to reciprocate. Transport protocol units are autonomous modules. A metal insert is secured within the polymeric upwardly extending lobe and engages the receiver extension.