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Systems and methods for detecting transparent media in printers

  • US 10,129,414 B2
  • Filed: 11/04/2015
  • Issued: 11/13/2018
  • Est. Priority Date: 11/04/2015
  • Status: Active Grant
First Claim
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1. A system for detecting transparent medium, comprising:

  • a medium dispenser for transporting print medium along a transport pathway to a print station which receives the print medium; and

    a sensor arrangement for scanning the print medium, the sensor arrangement including (i) a transmitter having an electromagnetic source configured to emit light toward a first surface of the print medium, and (ii) a receiver positioned about a second surface of the print medium opposite the first surface, and configured to receive at least a portion of the light emitted from the transmitter;

    wherein the sensor arrangement is configured to detect deflection of the light emitted when a transparent print medium is transported on the transport pathway and the transparent print medium is interposed between the transmitter and the receiver; and

    wherein the deflection is based, at least in part, upon the transparent print medium'"'"'s refractive index.

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