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Theory of Operation Ver. 1.0 Sep. 2008
13. Toner supply section
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bizhub C200
Composition/Operation
B. Toner replenishing control
• T/C is detected by TCR sensor when the developing section of the imaging unit is being
operated. (TCR sensor is located in the imaging unit.)
• Based on T/C ratio detected by the TRC sensor and amount of consumption calculated
by the dot counter, toner replenishing time (amount) is determined.
• When the machine determines the toner replenishing, sometime it detects the toner
amount that surpasses the maximum volume for one replenishing control. If it is not pos-
sible to replenish the supply of the required amount of toner within this maximum replen-
ishing time, the reminder time is stored in memory and added to the replenishing time for
the next replenishing sequence.
13.3.2
Toner cartridge detection
A. Detection of toner cartridge mounted in place
• When the front door is closed, the machine accesses the EEPROM board of each toner
cartridge to determine whether or not the corresponding toner cartridge is loaded.
B. Detection of new toner cartridge
• After the toner cartridge in the loaded position has been detected, the machine deter-
mines if the toner cartridge is new or not using the EEPROM data.
• If it is determined that the toner cartridge is new, the amount of toner packed of the toner
remainder amount information is reset to the default value.
A02ET2C582AA
A02ET2C584AA
Toner cartridge/K
Toner cartridge/Y,M,C
Y109670-2 Theory of Operation