2. Turning ON and OFF the Separation/ Pre-Transfer Corona CurrentThe separation corona current and the pre-transfer corona current are turned ONand OFF by the HVTAC drive signal (HVP.POST.AC), roller electrode drive signal(ROED), and high-voltage DC drive signal (DCON).3. Separation Corona Current (DC component)For the output control value, the direct current of the separation corona current (DCcomponent) is varied according to the voltage level (3 to 11 V) of the HVSCT signal.Figure 4-1144. Pre-Transfer Corona Current (DC component)The control value of the pre-transfer corona current (DC component) is variedaccording to the voltage level of the HVP.POST.DC signal.Figure 4-115-3300 3 11HVT.POST DC signal voltage level (V)Pre-transfer corona current( A)-5001003 11HVT.POST DC signal voltage level (V)Pre-transfer corona current( A)COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR. 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 4 IMAGE FORMATION SYSTEM4-15
