Patent ID: 8047355

Claim:
A belt mis-tracking adjustment apparatus comprising: a first pulley having two ends and an axis of rotation, at least one of the ends is coupled to a slidable bearing that enables translation of the end in a direction substantially perpendicular to the axis of rotation of the first pulley; a motor having a rotatable output shaft coupled to the slidable bearing, wherein the rotation of the output shaft in a first direction causes the slidable bearing to translate in a first direction and rotation of the output shaft in a second direction causes the slidable bearing to translate in a second direction; a second pulley arranged at a distance from the first pulley; a belt coupled to the pulleys, the belt having two edges parallel to its direction of travel; a first contact sensor disposed adjacent to a first edge of the belt; a controller coupled to the sensor and the motor, wherein in response to the first edge of the belt contacting the first contact sensor, the controller is adapted to cause the motor to rotate the output shaft; and a speed sensor coupled to the first pulley for generating a first speed signal; wherein the controller is adapted to adjust the rate of rotation of the rotatable shaft based on the first speed signal.