MX-3114N OPERATIONAL DESCRIPTIONS 13 – 32
d. Toner density correction / Toner density control
Different from the conventional models, this machine does not control the toner density in the developing unit according to the toner density
detected by the toner density sensor.
The toner supply operation from the toner cartridge to the developing unit is controlled according to the following data so that the optimum
developing is performed.
• The print pixel number for every page is counted and the toner consumption is calculated by the LSU mother PWB.
• The toner density is checked to be proper or not according to the result of the high density process control.
• The remaining toner quantity is presumed with the toner cartridge counter, and the toner supply quantity to the developing unit for the num-
ber of rotations of the toner motor is corrected. (This is because the toner supply quantity to the developing unit for the number of rotation of
the toner motor differs depending on the remaining toner quantity in the toner cartridge.)
• Correction for the temperature and the humidity
The toner density sensor in this machine performs the following functions.
• Judges whether toner is supplied from the toner cartridge to the developing unit or not during rotation of the toner motor.
• Judges whether the toner density is abnormal or not.
(1) The basic information of the toner density control is acquired.
• Temperature and humidity
• Print pixel number for every page
• High density process control data
• Toner cartridge counter
• Toner density sensor data
(2) The necessary toner supply quantity (toner motor rotation
number) is calculated according to the basic information of the
toner density control. (PCU PWB)
(3) The toner motor is rotated for the time corresponding to the
calculated toner motor rotation number.
(4) Toner is supplied from the toner cartridge to the developing
unit.
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