The development unit consists of the magnet roller forming the magnetic brush, the sleeve roller forming the thin layer by replacing the toner, the developer blade, and the developer screw mixing up the toner. The toner density is adjusted by impressing the bias to the magnet roller and the sleeve roller. The toner amount inside the developer unit is detected by the toner sensor (S9).
No. | Name | No. | Name |
|---|---|---|---|
1 | Sleeve roller | 6 | Developer case |
2 | Magnet roller | 7 | Developer top cover |
3 | Developer screw A | 8 | Developer base |
4 | Developer screw B | 9 | Toner sensor (S9) |
5 | Developer blade |