EPSON AcuLaser C9200N Revision D
OPERATING PRINCIPLES Operating Principle of Main Unit Mechanism 53
Confidential
TONER CARTRIDGE LIFE CONTROL
Toner Cartridge detection/New unit detection timing
Detection is controlled by confirming the data of each unit with access
to IC chip when the front door is closed.
Based on the data, the machine confirms if the cartridge is mounted or
not.
After detecting the presence of the cartridge, with the data machine
checks if the cartridge is new or not.
Figure 2-29. Toner Cartridge IC Chip
Toner Empty detection control
A toner empty condition can be divided into 3 groups: Normal, Near-
Empty, Empty
Toner Near-Empty detection control
When new toner is set, toner remaining level is set to IC chip. Based on
the remaining level, the machine calculates and gives subtraction of the
toner replenishing amount from the hours which the toner replenishing
motor has turned. When the level reaches the given amount of toner
remaining, Toner Near-Empty warning is displayed.
Toner Empty control
After a near-empty condition is detected, the toner density detected by
the TCR sensor, at every T/C ratio detection timing, is compared with
the target toner density. When the value reaches the given level, Toner
Empty warning is displayed.
SHUTTER MECHANISM
To prevent toner from being spilled when the Toner Cartridge is removed from
the machine, there is a shutter mechanism provided. When the Toner Cartridge
is installed in the machine, the shutter opens.
Figure 2-30. Shutter mechanism
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