Toshiba e-STUDIO2330C Service Manual page 333

[ 2 ] Operations of black auto-toner sensor
[ 2-1 ] Functions of the auto-toner sensor
• Initializing function: When unpacking and replacing the developer material
The automatic adjustment is made so that the output of the auto-toner sensor will be 1.42 V to 1.99
V for the toner density of new developer material.
• Toner density stabilizing function: During the printing operation
Through the following phases, the toner density is kept constant.
Toner is consumed.
→ Toner density decreases.
→ Output change of the auto-toner sensor is detected depending on the humidity.
→ Drives toner motor.
→ Supplies toner to the developer unit from the toner cartridge.
• Toner-empty detection/clear function:
Detects toner being empty in the toner cartridge.
Drives toner motor.
→ Output of the auto-toner sensor is not changed.
→ Toner density is not changed.
→ Detects toner being empty.
Toner-empty clear
Drives toner motor.
→ Supplies toner from the toner cartridge.
→ Output of the auto-toner sensor changes.
→ Toner density recovers to its normal value.
→ "Toner-empty" is cleared.
e-STUDIO2330C/2820C/2830C/3520C/3530C/4520C
DEVELOPER UNIT
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