Toner Cartridge; Methods For Detecting And Counting Toner Life - Brother HL-5340D Service Manual

3.3

Toner Cartridge

3.3.1 Methods for Detecting and Counting Toner Life

When the machine detects the toner life end, "Replace Toner" is displayed in the state of
LCD model and the red Status LED lights on, and the Toner LED lights on at the same time.
in the state of LED model. The toner life is displayed through the following two ways. First,
such indication is displayed when detection is performed by the toner sensor; second, it is
displayed at the time when a rotation rate of the develop roller reaches its upper limit.
(1) Detection by the toner sensor
The low amount of toner remaining can be detected by checking the imperviousness to
light of the toner in the cartridge by means of the transmissive photosensor.
(2) Detection by means of rotation rates of the develop roller reached its upper limit
The machine counts the accumulated number of the develop roller.
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