Toner Near End Detection; Toner End Detection; Toner End Recovery - Ricoh G104 Service Manual

Toner Near End Detection

The machine uses pixel count to detect toner near end.
1) The controller counts the printed pixels. Then, it calculates the remaining
toner quantity from the record stored in the memory ID chip for each toner
bottle.
2) If the remaining toner quantity is calculated at less than 10% of a full bottle,
the machine detects a toner near-end condition.
3) The remaining toner quantity and "Toner near end" are recorded in the
memory ID chip.
4) Toner near-end is displayed on the LCD display.
NOTE: Toner near-end detection uses the pixel counter on the memory 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 will not reset.
Also, near-end detection cannot be done properly.

Toner End Detection

The machine detects toner end when the toner end sensor detects no toner 3 times
in a row 3.1 seconds after toner was supplied. At this time, "Toner end" is recorded
in the memory ID chip.

Toner End Recovery

The machine detects that a toner bottle was replaced if one of these events occurs
during a toner end condition:
• The top cover is opened and closed.
• The main switch is turned off and on.
The machine then starts to supply toner to the development unit. After this, the
machine resets the toner end condition.
NOTE: 1) When "Toner near end" is detected, "Toner end recovery" is not
done.
2) If there is no "Toner end" information in the memory ID chip, the
machine detects that there is toner in the toner bottle and "Toner
end recovery" is done.
SM
CÓPIA NÃO CONTROLADA
6-15
CÓPIA NÃO CONTROLADA
PROCESS CONTROL
G104