Figure 4-114The transfer corona current is varied in relation to the temperature and the humiditymeasured by the environment sensor to eliminate the effects of changes in the environ-ment.Figure 4-1152. Turning On and Off the Separation/Pre-Transfer Corona CurrentThe separation/pre-transfer corona current is turned on and off when all outputs ofthe HVTAC drive signal (ACON), roller electrode rive signal (ROED), and high-voltageremote signal (HVRMT) generated by the DC controller PCB go ‘1’.Humidity (%)Pre-transfer current (-)Temperature (°C)Drum surface potential"high"Drum surface potential"medium"Drum surface potential "low"Separation current (-)CHAPTER 4 IMAGE FORMATION SYSTEM4-16 COPYRIGHT © 1997 CANON INC. CANON NP6560/NP6360/NP6260 REV. 0 NOV. 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
