Ricoh G-P3, Service Manual

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Toner Near End/Toner End Detection
Introduction
Toner Near End
To detect toner near-end the machine uses:
• Pixel count (memory chip on the toner bottle)
Toner End
To detect toner end the machine uses:
• 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.
• 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.
Process Control
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