Specifications

From the Sub Hopper, an even amount of toner is supplied over the full
length of the Bucket Roller by the Sub Hopper Toner Replenishing
Roller. (For details, see 13-7. Sub Hopper Toner Replenishing
Mechanism.)
The toner is then mixed together with the developer inside the Bucket
Roller and conveyed to both ends of the Bucket Roller. From the two
ends, it is fed to the Developer Conveying/Agitating Screw which
further agitates the developer.
The toner-to-carrier ratio of the developer, which has been conveyed to
the center of the Developer Conveying/Agitating Screw, is sensed by
ATDC Sensor UN8. (See p. M-75.)
At the center of the Developer Conveying/Agitating Screw, the
developer is again fed onto the Bucket Roller and directed towards the
front and rear of the Bucket Roller by the Oval Plate, which ensures
that the developer is fed evenly over the Toner Replenishing
Sleeve/Magnet Roller.
Part of the developer which was
not fed to the Toner
Replenishing Sleeve/Magnet
Roller is fed back again via both
ends of the Bucket Roller to the
Developer Conveying/Agitating
Screw.
The developer forms a brush on
the Toner Replenishing
Sleeve/Magnet Roller by the
magnetic poles of different
magnetic forces and the height
of the developer brush is
regulated by the Doctor Blade. It
is then supplied to the 1st
Sleeve/Magnet Roller.
The developer is attracted onto the surface of the 1st Sleeve/Magnet
Roller by the poles with varying magnetic forces and is carried to the
point of development by the turning 1st Sleeve/Magnet Roller. The
developer not used for development is supplied to the 2nd
Sleeve/Magnet Roller.
The developer is attracted onto the surface of the 2nd Sleeve/Magnet
Roller by the poles with varying magnetic forces and is carried to the
point of development by the turning 2nd Sleeve/Magnet Roller. The
developer not used for the development is carried back to the
Developer Conveying/Agitating Screw via the Bucket Roller.
M-72