Minolta Di450 Service Manual page 57

12-2. Sleeve/Magnet Roller
• The Sleeve/Magnet Roller, which consists of an outer sleeve roller and an inner magnet
roller, conveys developer to the point of development.
• The magnetic force of the magnet roller at the point of development is the strongest so
that the developer brush stands straight up to deliver the greatest amount of toner to the
point of development.
PC Drum
12-3. Doctor Blade
The Doctor Blade controls the height of the developer brush, ensuring that the developer on
the Sleeve/Magnet Roller levels out.
Sleeve/Magnet Roller
Sleeve Roller
Magnet Roller
Doctor Blade
M-37
Developer Pole
Magnetic flux
1177M060AA
1156M017AA