Mita PointSource Ai 3010, Service Manual

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2AR
1-3-25
Correcting the toner sensor control voltage
The toner sensor control voltage is corrected based on the absolute humidity and the
total drive motor time so that the toner density is kept constant regardless of the
changes in humidity and the total drive motor time.
Toner sensor control voltage after correction = A + B + C
A: Toner sensor control voltage before correction (value set by maintenance item 131)
B: Correction data based on the absolute humidity
C: Correction data based on the total drive motor time
• Correction based on the absolute humidity
+
10
0
–
25
–
35
0
Correction data
2.0 4.0 10.0 20.0 32.0
Absolute humidity (g/m
3
)
A
B
C
D
E
Figure 1-3-21 Correction based on the absolute humidity
A
When the absolute humidity is between 0 and 2.0 g/m 3 , a constant value of
+
10 is
added to the toner sensor control voltage.
B
When the absolute humidity is between 2.0 and 4.0 g/m
3
, the correction data is
reduced according to the rise in absolute humidity.
C
When the absolute humidity is between 4.0 and 10.0 g/m
3
, the correction data
becomes 0.
D
When the absolute humidity is between 10.0 and 32.0 g/m 3 , the correction data is
decreased according to the rise in absolute humidity, reducing the toner sensor
control voltage.
E
When the absolute humidity exceeds 32.0 g/m 3 , the correction data becomes a
constant value of
–
35, decreasing the toner sensor control voltage.