Specifications

Interleaf EP1052 GENERAL, MECHANICAL/ELECTRICAL
96.11.01
M-17
1151SBM0702A
7-2. Magnet Roller
The Magnet Roller of the Sleeve/Magnet Roller of this copier has the following
magnetic characteristics. Part of pole S2 before the principal N1 pole (i.e., the area
marked as S2b in the Fig. below) provides a very weak magnetic force. If developer
is compacted and clogs at the Doctor Blade and, as a result, part of the surface of
the Sleeve/Magnet Roller is not covered with developer, the nearby developer
around S2b goes to those uncovered areas because of its weak magnetic force.
This helps prevent blank lines from occurring on the copy.
The Sleeve Roller, onto which developer is attracted by the magnetic fields of force
set up by the poles of the Magnet Roller, turns to convey the developer toward the
point of development. It also means that the developer fresh from the Developer
Mixing Chamber is always brought to the point of development.
As we noted earlier, the Imaging Unit integrates the Developing Unit with the PC
Drum into one body. Because of that, it is impossible to move the Developing Unit
against the PC Drum, thereby providing a certain distance between the PC Drum
and Sleeve/Magnet Roller. The Magnet Roller has therefore been made movable:
the Bushing is pressed by compression springs thereby pressing the Positioning
Collars on both ends of the Magnet Roller against the PC Drum. This ensures a
given distance between the PC Drum and the Sleeve/Magnet Roller.
Pole Having Weak
Magnetic Force
Magnetic Pole Positioning
Movable Bushing
Compression Spring
Fixed Bushing
PC Drum