Developing Drive Control; Toner Flow - Konica Minolta magicolor 2490MF Service Manual

12. Developing section
12.2.1

Developing drive control

Rack Motor (M2)
Developing Motor (M3)
Developing bias AC
Developing bias DC
Main Motor (M1)
Charge output bias
12.2.2

Toner flow

1. Toner stored in the hopper is agitated by the agitating blade and conveyed into the
toner supply portion by the conveyance blade fitted to the leading edge of the agi-
tating blade.
2. The toner conveyed into the toner supply portion is conveyed by the supply roller
onto the developing roller.
3. At this time, regulator blade/1st and /2nd regulate the height of toner on the surface
of the developing roller.
4. Toner then sticks to the electrostatic latent image formed on the surface of the
photo conductor. That part of toner left on the surface of the developing roller is
returned to the toner supply portion.
Agitating Blade
30
Polygon Motor Energized
K Toner
Developing
Position
Hopper
Regulator Blade/1st
Theory of operation ver. 1.0 July. 2006
Belt Positioning
Print Start
Sensor Activated
C K
Y
M
Supply Roller
Developing Roller
Regulator Blade/2nd
Standby Position
Y
4139to2102e0
4139to2061e0