Color Skew Correction Control - Konica Minolta bizhub c650 Service Manual

8. Write section (PH section)
8.2.6

Color skew correction control

• Temperature may change inside the PH unit and the components can change over time.
This may cause color skew problems. To prevent the problems, individual G3 lenses that
correspond to Y, M, and C respectively have a color skew auto adjustment mechanism.
• When the skew correction motor runs, the G3 lenses moves up and down to perform an
automatic color skew correction.
A. Operation timing
• The color registration control and the color skew control operate at one time.
• By using the CD registration pattern detected, the color skew amount is calculated for
each color. Each color skew is corrected using the previous correction data as a stan-
dard of reference.
38
Theory of Operation Ver. 8.0 Jun. 2008
G3 lens holder
A00JT2C026AA
Y M
Skew correction motor/
Y,M,C (M35,M36,M37)
Skew adjustment
C
K
A00JT2C011DA
A00JT2C012DA