12.4 Auto-Toner Circuit
12.4.1 General description
(1) Function of the auto-toner circuit
· Detects the toner density in the developer material, and supplies toner when the density is low-
ered to a certain level.
· Detects that there is no toner left in the cartridge (toner-empty detection).
(2) The auto-toner circuit consists of the following:
· Auto-toner sensor : Detects the toner density.
· Control section : Controls the toner density so that the toner in the developer material is
xedtocertainratio.
· Toner motor : Supplies toner to the developer material.
· Display : Indicates toner-empty information.
Fig. 12-401
07/11