Ricoh Aficio BP20 - Toner End Detection

G144
Ricoh Europe B.V.
Technical Training Centre
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46
Slide 46
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
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.