Ricoh Di-C1.5a Manual page 151

Toner Bottle Detection/Full Detection
Near-full
Sensor
Bottle Set
Sensor
When the waste toner sensor detects the actuator, the 'near-full'
condition occurs.
The machine can make about 2000 more copies (2 P/J, 20% color
ratio, 5% coverage). Then the 'full' condition occurs and the
machine stops.
Slide 151
Bottle full is detected by estimating toner coverage since near-full was detected.
It does not count 2000 sheets.
151
Di-C1.5 Training