Ricoh G104, Service Manual

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Process Control
SM 6-11 G160/G161
G160/G
161
6.3.4 TONER NEAR END/TONER END DETECTION
Introduction
Toner Near End
To detect toner near-end the machine uses:
ƒ Pixel count (memory chip on the toner bottle)
Toner End
To detect toner end the machine uses:
ƒ Output from the toner end sensor [A]
Toner Near End Detection
The machine uses the pixel count.
1. The controller counts the printed pixels. Then, it calculates the remaining
toner quantity from the record in the ID chip for each toner bottle.
2. If the remaining toner quantity is less than 10% of a full bottle, the
machine detects toner near-end.
3. The remaining toner quantity and “Toner near end” are recorded in the ID
chip.
4. Toner near-end is displayed.
ƒ Toner near-end detection uses the pixel counter in the ID chip. If new toner is
added to the empty toner bottle, the contents of the ID chip are not reset, so the
toner near-end or end condition is not reset. Also, near-end detection cannot be
done.
Toner End Detection
The machine detects toner end when the toner end sensor detects toner end 3 times in a
row 3.1 seconds after toner was supplied. At this time, “Toner end” is recorded in the ID
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CÓPIA NÃO CONTROLADA