Functional Description; Toner Supply - Oce 7050 Technical & Service Manual

Functional description

1 Toner supply

When the toner level is low, the toner supply motor 05M1 feeds toner. During
toner dosing, the toner supply switch 05S1 detects if there is still sufficient ton-
er.
The toner concentration sensor 05B1 is cleaned by a cleaning flap.
The toner supply switch 05S1 is a reed switch inside the toner feed unit. When
the toner supply motor 05M1 rotates, a flap inside the toner feed unit also ro-
tates. A magnet is mounted on this flap. When there is sufficient toner, the flap
is moved upwards by the resistance of the toner. In that case the magnet does
not energize the toner supply switch 05S1. When the toner level gets low, the
flap falls down because there is no more toner to resist it. The magnet then en-
ergizes the toner supply switch 05S1 and the "add toner" message appears.
toner feed unit
ed. 6
05M1
05B1
05S1
22PBA01
developing unit
23M1
22PBA05
05 Developing 501