2HL/2HM/2HN
2-1-13
2-1-4 Developing section
The developing unit consists of the sleeve roller that forms the magnetic brush, the magnet roller, the developing blade
and the developing screws that agitate the toner. Also, the toner sensor checks whether or not toner remains in the devel-
oping unit.
Figure 2-1-14 Developing unit and toner container
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21/23 ppm (500-sheet) model
26/28 ppm (500-sheet) model
21/23 ppm (250-sheet) model
(1) Sleeve roller
(2) Magnet roller
(3) Developing blade
(4) Developing screw A
(5) Developing screw B
(6) Sleeve cover
(7) Toner sensor
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