Ricoh IM C300

Toner Supply Section
D0CA/D0C9/D0C8/D0CB 7-54 SM
Status Operation panel
message
Detection conditions
Toner End
SP3-101-001 to
004="0"
Operation panel
pop-up display (alert
screen):
<Toner has been
depleted.
Replace Toner
Cartridge.>
Toner End is detected if one of the following
conditions is met:
(1) Toner End detection by Toner End sensor
(S11-S13).
(2) Toner End detection by Vt output.
Estimated Toner Near End (Toner Near End detection by referring to pixel
count and total counts by toner supply motor (M1-M4)):
1. The toner residual amount calculated by the toner supply motor (M1-M4) drive period
(SP3-102-001 to 004) and the toner residual amount calculated by pixel count
(SP3-102-011 to 014) are compared. Then the one with the smaller amount counts as the
toner residual amount.
2. If the toner residual amount is less than the Near End Threshold Value (SP3-110-001 to
004), Toner Near End is detected.
However, Toner Near End is not detected if:
• Toner Near End Threshold Value (SP3-110-001 to 004) is "0".
• Process control or other adjustment is ongoing.
Definite Toner Near End (Toner Near End detection by Toner End sensor (S11-S13)):
Toner Near End detection by the Toner End sensor (S11-S13) is done with colors other than
black.
1. The toner residual amount calculated by the toner supply motor (M1-M4) drive period
(SP3-102-001 to 004) and the toner residual amount calculated by pixel count
(SP3-102-011 to 014) are compared. Then the one with the smaller amount counts as the
toner residual amount.
2. Whether or not to execute Toner Near End by the Toner End sensor (S11-S13) is
determined according to the following criteria:
Toner replenishment amount (SP3-102-021 to 024) is not
below the threshold (50%) to start Toner End Sensor
(S11-S13)
Toner End Sensor (S11-S13) is
not used to detect Toner Near
End.
Toner replenishment amount (SP3-102-021 to 024) is
below the threshold (50%) to start Toner End Sensor
(S11-S13)
Toner End Sensor (S11-S13) is
used to detect Toner Near End.
(Go to Step 3.)
3. If Toner End Counter (SP3-121-001 to 004) exceeds threshold (2 times) to detect Toner
Near End, Toner Near End is detected.