Ricoh MP C6502SP Field Service Manual page 1429

• Shock-jitter of Types 1 and 2 can occur together on the same printout.
Solution
Fine adjust the line speed in the SP mode according to the paper in use. See following pages for
detailed procedure.
• Note the following side effect when adjusting the line speed.
• Image size will reduce in sub-scan direction as described in the table to the right. The
reduction ratio will differ depending on the machine.
Paper weight
Weight 5
Weight 6
Weight 7
Weight 8
How to verify if the lines are "shock-jitter"
Before fine adjusting the line speed, print a test pattern under the following conditions and check
the location of the lines to verify if the lines you are trying to resolve are shock-jitter.
Line speed adjustment
-0.2%
-0.4%
-0.5%
-0.2%
-0.4%
-0.5%
-0.3%
-0.5%
-0.6%
-0.3%
-0.5%
-0.6%
Image size reduction in
sub-scan direction
-0.20%
-0.22%
-0.26%
-0.22%
-0.25%
-0.26%
-0.24%
-0.27%
-0.29%
-0.20%
-0.28%
-0.30%
Image Quality
1427