Konica Minolta bizhub C658 Service Manual page 1798

bizhub C658/C558/C458/C368/C308/C258
[5] Color shift
[7] After correction
3.3.7 Color skew correction control
(1) bizhub C368/C308/C258
• Temperature may change inside the print head unit and the components can change over time. These phenomena 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 move up and down to perform an automatic color skew correction.
[1]
[1] G3 lens
[1]
[1] G3 lens tilting shaft
[3] Skew correction motor
[5] G3 lens drive cam
(2) bizhub C658/C558/C458
• Temperature may change inside the PH unit and the components can change over time. These phenomena may cause color skew
problems. To prevent the problems, individual G2 lenses that correspond to Y, M, and C respectively have a color skew auto adjustment
mechanism.
• When the skew correction motor runs, the G2 lenses move up and down to perform an automatic color skew correction.
[1]
[1] G2 lens
O THEORY OF OPERATION bizhub C658/C558/C458/C368/C308/C258 > 3. WRITE
[2]
[4]
[3]
[2]
[6] Magenta (M)
[8] No color shift
[2]
[2] Skew correction motor
[5]
[2] G3 lens: The lens is tilted to correct color skew.
[4] Drive gear
- -
[2] Skew correction motor
O-23
SECTION (PH SECTION)