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Browse Prior Art Database

Improved Fuser Oil Pumping Algorithm

IP.com Disclosure Number: IPCOM000119427D
Original Publication Date: 1991-Jan-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 1 page(s) / 27K

Publishing Venue

IBM

Related People

Abbott, JJ: AUTHOR [+3]

Abstract

In a wet release fusing system for high volume copiers and printers utilizing an electrophotographic process, the prior art algorithms pumped oil based only on the number of sheets of paper passing through the fuser. With the improved algorithm, the fuser wick neither dries out nor becomes oversaturated as it does in the previous algorithm.

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Improved Fuser Oil Pumping Algorithm

      In a wet release fusing system for high volume copiers and
printers utilizing an electrophotographic process, the prior art
algorithms pumped oil based only on the number of sheets of paper
passing through the fuser.  With the improved algorithm, the fuser
wick neither dries out nor becomes oversaturated as it does in the
previous algorithm.

      If the fuser oil is replenished to the wick based on an
algorithm that pumps a fixed amount of oil whenever a fixed number of
sheets of paper (N1) have passed through the fuser rolls and also
pumps the same fixed amount of oil to the wick when a second fixed
number of fuser 'start cycles' (N2) occur, the amount of oil in the
wick remains constant and optimum fuser performance results.  An
accumulator register is used to ensure that no feed signals are lost.
      The improved algorithm is
           A = K1N1 + K2N2 where K1 and K2 are empirically determined
constants and A is the oil pumping rate.

      Disclosed anonymously.