Konica Minolta BIZHUB 750 Service Manual page 119

Theory of Operation Ver1.0 Aug.2005
F. Gamma correction control
(1) Purpose
To maintain the image at a fixed gradation without being negatively affected by the environmental condition and
the number of prints.
(2) Method
• Create multiple toner patches on the drum while changing the laser PWM. At this time, create patches with
the number of rotations of the developing roller decided at the maximum density control.
• Read this patch with the gamma sensor and create a gamma curve by calculation.
(3) Execution timing
• Executed after completion of the job each time the specified number of prints are made in the PM counter
and also when the developing theta gets to the reference value.
24. IMAGE STABILIZATION CONTROL
93