In embodiments herein one or more cams are operatively connected to corresponding ones of idler rollers within nip drive assemblies. As the cams rotate, the cams move the idler rollers between a first position biased against the drive rollers and a second position out of contact with the drive rollers. A camshaft is operatively connected to the cams, and the camshaft is operatively connected to a clutch driven by the drive motor/axle of the nip drive assembly. One feature of embodiments herein is that the camshaft (and consequently the cams themselves) is rotated by the clutch only when the drive axle rotates in a reverse direction opposite the forward direction. Thus, the forward movement of the drive axle moves media through the drive nips and reverse movement of the drive axle rotates the cams, thereby controlling the position of the idler rollers.