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Multi-zone heating for a fuser roller

  • US 5,241,159 A
  • Filed: 03/11/1992
  • Issued: 08/31/1993
  • Est. Priority Date: 03/11/1992
  • Status: Expired due to Term
First Claim
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1. A fusing roller for fusing an image onto a receiver comprising:

  • a cylindrical member of thermally conducting material having a peripheral surface at which the receiver is fused;

    at least three pattern groupings of heat elements contained within the cylindrical member for individually generating an even heat flow distribution to specific areas about the peripheral surface of the cylindrical member and at least two pattern groupings of heat elements provide heat flow distribution to the same specific area about the peripheral surface of the cylindrical memberindividual heat elements of the same pattern grouping are of the same heating capacity, individual heat elements not of the same pattern grouping are of different heating capacity and each pattern grouping having a different heating capacity; and

    heat sensing means positioned within said cylindrical member adjacent to the heat elements for sensing the heat generated from the heat elements.

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