Patent ID: 8068258

Claim:
A system for positioning an electro-optical instrument within a printing device, the system comprising: an electro-optical instrument; an actuator operatively associated with the electro-optical instrument for generating a mechanical force necessary to move the electro-optical instrument along a travel path between at least: (i) a first position, wherein a read plane defined parallel to a detection face of the electro-optical instrument optically corresponds to a target region defined by a media guide of a printing device, and (ii) a second position, wherein the read plane of the electro-optical instrument has at least one of (x) a different orientation, and (y) a different elevation, relative to the first position; and one or more calibration references, wherein at least one of the one or more calibration references is positioned or positionable such that the read plane of the electro-optical instrument at the second position optically corresponds to a surface of the at least one calibration reference.