Patent ID: 8777399
Filing Date: 2014-07-15
Classification: B41J

Abstract:
1. A duplex inkjet printer comprising: a plurality of printheads that form a print zone, the plurality of printheads having a first group of printheads configured to eject ink onto a first side of a print medium and a second group of printheads configured to eject ink drops onto a second side of the print medium, the second group of printheads being offset from the first group of printheads in a cross-process direction; a media transport configured to: an optical sensor configured to generate image data corresponding to light reflected from the first side and the second side of the print medium after the first side and the second side of the print medium have been printed by the first group and the second group of printheads; and a controller operatively connected to the plurality of printheads, the media transport, and the optical sensor, the controller being configured to: