MX-3114N OPERATIONAL DESCRIPTIONS 13 – 26
(3)
Process control items and contents
The table below shows the correction item, the change item, the purpose/effect, and the operation timing for each process control item.
Item
No.
Correction item
Change item
Purpose/Effect
Operation timing/
Operation condition
1
Color image
density sensor
sensitivity
adjustment (Image
registration sensor
F)
Color image
density sensor
(Image registration
sensor F) LED
current adjustment
Color image
density sensor LED
current adjustment
value
A change in the sensitivity due to dirt on
the sensor or a change in the
temperature is corrected to enable
always correct detection of the image
patch density.
SIM44-2 / Before high density process
control operation
Monochrome
image density
sensor sensitivity
adjustment (Image
registration sensor
R)
Monochrome
image density
sensor (Image
registration sensor
R) LED current
adjustment
Monochrome
image density
sensor amp gain
and sensor LED
current adjustment
value
A change in the sensitivity due to dirt on
the sensor or a change in the
temperature is corrected to enable
always correct detection of the image
patch density.
SIM44-2 / Before high density process
control operation
2
High density
process control
Developing bias
voltage correction
Developing bias
voltage
A change in the density due to a change
in characteristics of the image generating
section and overlap copy are prevented
to maintain the density in the high density
image section at the proper level.
SIM44-6 (Compulsory execution)
When warming up after resetting the
OPC drum counter, the developing
counter, and the transfer counter (SIM25-
2/24-4/24-5/24-7).
When warming up after resetting the
OPC drum counter, the developing
counter, and the transfer counter (SIM25-
2/24-4/24-5/24-7).
When warming up after replacement of
the toner cartridge.
For the other operation timing, conform to
the setting of SIM44-28.
Main charger grid
voltage correction
Main charger grid
voltage 3
The developing bias voltage correction
(change) is corrected to maintain the
relation between the developing bias
voltage and the main charger grid voltage
difference to a constant one. (Prevention
of overlap copy and developer drop)
After the developing bias voltage
changes by the high density process
control.
3
Half-tone process
control
Half-tone process
control (Copy
mode)
Dither pattern
(LUT)
The color balance (gamma) adjusted by
the serviceman color balance adjustment
is maintained.
1)
SIM44-26 (Compulsory execution)
2)
After the high density process
control (However, depending on the
conditions)
For the other operation timing, conform to
the setting of SIM44-28.
Half-tone process
control (Printer
mode)
Dither pattern
(LUT)
The result of the half-tone correction
executed in the copy mode is applied to
the printer mode.
After the copy mode half-tone density
image correction
4
Toner density
correction / Toner
density control
Correction for the
environmental
toner supply
quantity (Toner
density correction)
(Temperature and
humidity change)
Toner supply
quantity (Toner
supply time)
By changing the toner motor rotation
level, the toner supply is corrected to
maintain the toner density at a proper
level.
When the temperature and the humidity
change
Toner supply
quantity correction
for the result of the
high density
process control
Toner supply
quantity (Toner
supply time)
When the developing bias voltage is
changed by the high density process
control, if the toner density is judged to
be low, the toner supply quantity is
corrected to maintain the proper density
for print.
After the developing bias voltage is
changed to the higher level than the
specified level by the high density
process control.
Correction of the
toner supply
quantity for the
toner cartridge
counter
Toner motor
rotation number
Toner supply
quantity (Toner
supply time)
The toner supply quantity to the
developing unit for the certain number of
rotations of the toner motor differs
depending on the remaining toner
quantity in the toner cartridge. Therefore,
the toner motor RPM is changed
according to the remaining toner quantity
(toner motor counter) to maintain the
proper toner supply operation.
When the toner motor counter changes
Correction of the
toner supply
quantity for the
output image
density (number of
pixels)
Toner supply
quantity (Toner
supply time (duty))
The toner supply quantity is maintained
properly for the area (pixel count) of
output images (for the actual toner
consumption quantity), keeping the toner
density at the proper level.
During output operation (for every page)
