Toner End Detection - Ricoh Aficio BP20 Service Training

Slide 46
5. Engine
More on Toner End Detection
When the total number of dots gets to a pre-programmed figure (as for toner
near-end), the machine shows "TONER LOW".
After another period of dots has been counted up, the machine finally shows
"TONER EMPTY" (as for toner end), and the machine stops printing.
Ricoh Europe B.V.
Technical Training Centre

Toner End Detection

The machine does not have a toner end sensor.
The machine checks the amount of toner with
software.
The machine counts and adds up black dots as
toner consumption.
For example, the following occurs when the
machine prints 5% of test chart.
» Starter cartridge: Approx. 4,750,000,000 dots will be
added
» Supply cartridge: Approx. 7,500,000,000 dots will be
added
46
G144