Media unit redirector assembly for media processing devices

A registration assembly for a media processing device, comprising:

• a registration surface substantially parallel with a direction of travel of a media unit along a media processing path defined within a housing of the media processing device;
• a bias member coupled between the housing and the registration surface to bias the registration surface toward the media processing path to apply a force to an edge of the media unit when in an active position;
• and
• an activator coupled to a roller, the roller to be driven via contact with the media unit, the roller to rotate in a first rotational direction in response to the media unit moving in a first linear direction, the roller to rotate in a second rotational direction opposite the first rotational direction in response to the media unit moving in a second linear direction opposite the first linear direction, the activator configured to:
• (i) move the registration surface toward the media processing path into the active position to engage the media unit responsive to rotation of the roller in the first rotational direction;
• and
• (ii) move the registration surface away from the media processing path into an inactive position responsive to rotation of the roller in the second rotational direction.