Yet another example of a bi-directional feeding system. This is the duplexing scan feeder of a Konica-Minolta copy machine.

The stepper motor turns in both a clockwise and counter-clockwise direction. the feed roller only turns in one direction, regardless of the direction the motor is spinning. In this case, the process is accomplished by two, one-way clutches on the feed roller. Both clutches only engage in one direction (the same direction as each other). The only difference is that one clutch has one more gear placed in the drive-train, this reverses the direction.