Patent ID: 9079441
Filing Date: 2015-07-14
Classification: B29C,B33Y,B41J

Abstract:
1. A printer comprising: a printhead configured with a plurality of inkjets arranged in at least two rows; an optical sensor having an adjustable focus to move a focal plane of the optical sensor that is perpendicular to the printhead to enable the focal plane to be aligned with the inkjets in a first row of inkjets in the printhead when the focal plane is in a first position and to be aligned with the inkjets in a second row of inkjets in the printhead when the focal plane is in a second position, the optical sensor being configured to generate image data of the focal plane in response to an activation signal; an illumination source positioned to illuminate the focal plane of the optical sensor at the first position and the second position; and a controller operatively connected to the printhead and to the optical sensor, the controller being configured to operate the optical sensor to move the focal plane between the first position and the second position and to generate the activation signal, to operate the printhead to eject drops of material from inkjets in the row of inkjets aligned with the focal plane, and to receive image data of the focal plane generated by the optical sensor in response to the activation signal.