Canon C850 Practical Manual page 86

4
Print another test page and hold it up to a light to see if the
position on both sides of the paper�
5
If the (register marks) are not aligned, adjust the position of the image again in the sequence
shown below�
i j
h
Correct Image
Skew
NOTE
• Print about ten copies of the test page, and then measure the final page that is printed� This is done to improve
accuracy, because the position of the images that are printed first is inconsistent� If the humidity is high, print about
30 copies of the test page and measure the final page�
• If you are adjusting the position of the image on coated paper or heavy paper that is more than 250 g/m
bond), print three to five test pages and use the average value� This is done because the position of the image on
heavy or coated paper is inconsistent�
• Use the marks for each paper size when checking for misalignment of images� For example, if the test page is A3, use
the register mark to check for misalignment�
A3
• If you change the value in [Adj� Secondary Transfer Volt�], be sure to adjust the zoom ratio of the image�
"Paper Type Management" > "Adjusting the Image Position" in the User's Guide
84 84
imagePRESS C850/C750/C650/C65
b
a
c c
g h
Correct Correct
Parallelogram Trapezoid
Distortion Distortion
(register marks) are in the same
+
d
f
i
-
Adjust Zoom Adjust Position
Ratio of Left Edge
Register
e
- +
Adjust Position
of Leading Edge
Register
2 (66 lb