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Imaging an imprinted substrate on a printing press using an image sensor

  • US 8,586,956 B2
  • Filed: 05/18/2012
  • Issued: 11/19/2013
  • Est. Priority Date: 08/09/2004
  • Status: Active Grant
First Claim
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1. A method of imaging an imprinted substrate on a printing press, comprising:

  • sensing light reflected by the substrate using a contact image sensor to produce data representative of the imprinted substrate, wherein the substrate has been imprinted with different colors at a plurality of printing units of the printing press, each printing unit comprising a plate cylinder, wherein the data representative of the imprinted substrate is output by the contact image sensor as analog voltage signals;

    receiving the analog voltage signals from the contact image sensor at a sensor interface circuit and converting the analog voltage signals to digital signals using an analog-to-digital converter of the sensor interface circuit;

    processing the digital signals using the sensor interface circuit to produce corrected digital signals; and

    storing data based on the corrected digital signals in a memory.

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