Image Stabilization Control Flow While In The Print And After Completion Of The Print - Konica Minolta BIZHUB 750 Service Manual

Theory of Operation Ver1.0 Aug.2005
24.2.2

Image stabilization control flow while in the print and after completion of the print.

The following shows the flow of the image stabilization controls taken while in the print and after completion of
the print.
C. Charge cleaning
a: After completion of the last job for each specified prints and when the developing theta gets to
the reference value.
b: After completion of the last job other than the above.
A. Toner density control
(1) Method
• Develop a toner patch on the drum once for every 6 prints after the power switch (SW2) turns ON, and read
the patch density with the maximum density sensor.
• When the patch density is lower than the reference value, the operation varies depending on the developing
theta (developing roller line speed/drum line speed).
a. When the developing theta is lower than the reference value: Increase the number of rotations of the
developing roller for control according to the patch density.
b. When the developing theta is at the reference value: Drive the toner supply motor (M12) only for the
period of time calculated based on the patch density and the paper size to replenish toner.
Print start signal
Start of signal
A. Toner density control
B. Black belt creation control
b
End of print
Stand-by
24. IMAGE STABILIZATION CONTROL
a
D. Dot diameter correction control
E. Maximum density control
F. Gamma correction control
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