COPYRIGHT © 2000 CANON INC. 2000 2000 2000 2000 CANON iR5000/iR6000 REV.0 JULY 2000CHAPTER 4 IMAGE FORMATION SYSTEM4-34 P3.6.2 Correcting the Output to Suit the Environment and the Density of theOriginal UsedThe output of separation current is optimized to suit the environment (identified by datafrom the environment sensor) and the density of the original used (surface potential of thedrum); the control is in the three levels of High, Medium, and Low.F04-306-02[1] In a low humidity environment, paper becomes dry, tending to become charged (highresistance); the output is decreased to make up for this.[2] If the potential of the drum is low, increase the output to prevent separation faults.[3] If the potential of the drum is high, decrease the level of current to prevent double trans-fer.COPIER>OPTION>BODY>FUZZY (turning on/off fuzzy control)0: fuzzy control ON (default)1: low humidity mode (uses a lower-than-standard level of pre-transfercharging current)2: normal humidity environment mode3: high humidity environment mode (uses a higher-than-standard level oftransfer charging current)Setting to ‘1’ through ‘3’ makes the mechanism independent of the environ-ment sensor.Separation current (μA)Low humidity¬ ®High humidity[1](-)[2][3]Drum surface potential: highDrum surface potential: mediumDrum surface potential: low
