System and method for sensing white paper

  • US 6,778,276 B2
  • Filed: 05/02/2003
  • Issued: 08/17/2004
  • Est. Priority Date: 04/29/1999
  • Status: Active Grant
First Claim
Patent Images

1. A method of sorting white paper during recycling, comprising:

  • (a) providing a stream of waste paper including white paper and dominated by materials other than the white paper;

    (b) identifying the white paper by detecting the presence of an optical characteristic of the white paper as the stream of waste paper is passed by a sensor; and

    (c) controlling one or more actuators that direct the white paper out of the stream of waste paper based on the presence of the optical characteristic.

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