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COPYRIGHT
©
1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
4–9
CHAPTER 4 IMAGE FORMATION SYSTEM
3. Turning On/Off the Developing AC Bias/Separation Eliminator Bias
a. Turning On/Off the Developing AC Bias
• When DV_AC_DR is 0,
control circuit turns off
oscillation circuit turns off
amplification circuit turns off
AC high-voltage transformer turns off
The above condition deprives the developing cylinder of developing AC bias.
• When DV_AC_DR is 1,
control circuit turns on
oscillation circuit turns on
amplification circuit turns off
AC high-voltage transformer turns on
The above condition supplies the developing cylinder with AC bias.
b. Turning On/Off the Separation Static Eliminator
• When DV_AC_DR is 0,
oscillation control circuit turns off
high-voltage transformer turns off
The above condition deprives the static eliminator of separation static eliminator bias.
• When DV_AC_DR is 1,
oscillation control circuit turns on
high-voltage transformer turns on
The above condition supplies the static eliminator with separation static eliminator bias.