Method and apparatus for moving a carriage to a home position

摘要

Apparatus for sensing an initial position of a moveable carriage mounted within a housing of an imaging device may comprise a detector having a plurality of light sensitive elements for detecting objects within a field of view. At least one of the light sensitive elements is an image sensing element and at least one of the light sensitive elements is a position sensing element. A reference mark is positioned on the housing so that is within the field of view of the position sensing element of the detector when the carriage is at about a home position. An image data processor connected to the detector and responsive to the output signals generated thereby determines whether the reference mark is within the field of view of the position sensing element of the detector.