Toner Near-End Detection - Ricoh Di-C1.5a Manual

Toner Near-end Detection

To detect toner near-end, the machine uses the following
data:
Toner supply motor rotation counter
Pixel counter
Toner end sensor
If one (or both) of the counters detect that the remaining
toner amount is less than a set value (see below), the
machine enters the near-end condition.
K: 13 g (600 sheets at 5% coverage)
CMY: 3 g (120 sheets at 5% coverage)
The toner end sensor detects the near-end condition when
there are only 100 sheets left.
This occurs when the bottle is empty, but a small amount of
toner remains in the sub hopper.
Slide 190
The two counter values on the slide are stored in the RFID chip on the toner
cartridge, and copied to the NVRAM on the BCU.
The toner end sensor is a fail-safe in case the two counters do not detect near-
end correctly. However, 100 sheets is not much time before the toner runs out.
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