Patent ID: 6189991
Filing Date: 2001-02-20
Classification: B41J

Abstract:
Ink jet printing apparatus for forming an ink image on a receiver having length and width in response to a digital image and for adjusting for receiver skew and image resolution, comprising:a) at least one moveable ink jet print bar which is adapted to deliver ink to the receiver at an image transfer position to print at least a portion of a line at a time across the width of the receiver;b) means for moving the receiver along a path past the ink jet print bar at the image transfer position;c) detector means disposed adjacent to the path for detecting receiver skew relative to the ink jet print bar and producing a receiver skew signal representative of the receiver skew;d) alignment means coupled to the print bar for adjusting the print bar to a position to compensate for receiver skew in response to the receiver skew signal and for adjusting the print bar position to change the image resolution; ande) control means responsive to the digital image after the ink jet print bar has been positioned for actuating the ink jet print bar to form an ink image on the receiver.