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Warning device for printers

  • US 5,717,384 A
  • Filed: 05/30/1996
  • Issued: 02/10/1998
  • Est. Priority Date: 05/30/1996
  • Status: Expired due to Term
First Claim
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1. A method for detecting a printer error, comprising the steps of:

  • a) electrically connecting a printer to a computer via a cable made up of a plurality of wires;

    b) electrically tapping a cable wire via a modular warning device;

    c) monitoring the electrical state of the cable wire with the modular warning device;

    d) determining, via the modular warning device, whether the electrical state of the cable wire indicates a normal state or a printer error state; and

    e) activating an alarm, via the modular warning device, if the electrical state of the cable wire indicates a printer error.

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