Patent ID: 8419144
Filing Date: 2013-04-16
Classification: B41J

Abstract:
1. An inkjet printing system, comprising: an optical sensor positioned proximate a media transport path in an inkjet printing system, the optical sensor including: a single optical beam emitter positioned proximate the media transport path, the single optical beam emitter being configured to emit in a cross-process direction across the media transport path an optical sheet; a single optical beam receiver positioned proximate the media transport path to receive the optical sheet emitted by the optical beam emitter, the single optical beam receiver being configured to generate a signal corresponding to a height of media on the media transport path in response to the optical beam receiver being blocked from receiving at least a portion of the optical beam by the media; a controller associated with the inkjet printing system, the controller being configured to receive the signal generated by the single optical beam receiver and determine the height of the media on the media transport path, the controller being further configured to modify operation of the inkjet printing system with reference to the height of the media; and a printhead configured to be moved with reference to the media transport path, wherein the controller being further configured to operate the printhead to move the printhead to enable media having the media height that exceeds the predetermined height to pass the printhead, and wherein the single optical beam emitter and the single optical beam receiver move with the printhead.