Canon MF4600 Series Basic Operation Manual page 261

ADJUST./CLEANING
MODE2
6. SPECIAL MODE X
7. SPECIAL MODE Y
12-30
Sets the density of printouts becomes four-levels lighter than
normal condition.
Sets whether to prevent blur from appearing on the printouts
for print jobs from PCL driver.
When this setting is set to <ON>, the density of printouts may
become light.
– ON
– OFF
Sets to enhance the fixing characteristics of toner under the
conditions of a low temperature environment When this setting
is set to <ON>, first copy time and the time to resume from the
sleep mode may take longer.
– OFF
– ON