Olivetti d-Color 201MF Theory Of Operation page 35

8. Write section (PH section)
(4) Image skew
• If the image of each color (Y, M, C) is tilted against the image of black (K), the image
skew can be corrected by changing the angle at which the printer head is mounted on
the main body installation plate. Image skew correction needs to be performed sepa-
rately for the respective colors (Y, M, C).
• The image skew correction is mechanically accomplished and the adjustment is made
manually. (Image stabilization control does not make the skew correction.)
• The timing at which the image skew adjustment is made is when the printer head is
replaced with a new one or a skewed image occurs.
* When the image of magenta is tilted against the image of black (K)
Transfer belt
Rotational
direction of the
transfer belt
B. Skew control mechanism
• When the printer head is mounted on the main body installation plate, image distortion
(skew) occurs due to mounting error. Therefore the printer head adopts the correction
system.
• The main body skew can be corrected by adjusting the dial of the corresponding printer
head (Y, M, C.)
For the detailed adjustment method, refer to PH mechanical adjustment in the Adjust-
ment/Setting section described in Field Service manual.
28
Theory of Operation Ver. 1.0 Sep. 2008
Before correction
Black (K)
Magenta (M)
Theory of Operation
After correction
Color shift
No color shift
A02ET2C633AA
4038T2C038AB
Y109670-2