Riso ComColor X1 series Technical Manual page 164

BP Section
<Roller Profile Compensation>
In this compensation, the amount of eccentricity existing on the transfer belt rollers is quantified and applied on
the ink drop timing. The roller profile parameters must be re-input by test modes after the encoder is once
removed from the transfer roller or when either one of the part is replaced.
The two roller profile parameter numbers are printed on the sticker attached on the BP Front cover when the
machine is shipped from the factory.
Once these two test modes are adjusted and the parameter input is changed, cross the imprinted number on the
sticker and hand-write the new parameter numbers on the sticker.
• Amplitude Input
1. Load A3 paper in the paper feed tray. (16 sheets or more.)
2. Execute test mode 1479 (printing for roller profile amplitude adjustment).
3. The 16 sheets are printed continuously, producing a black pattern with lines in landscape orientation
4. Check the printed pattern, which shows an amplitude of deviation of 0100, followed by 0200, and so on (in
increments of 100) up to 1600.
5. Check the shading caused by transition from one print head to another. Select the amplitude of the pattern that
is least blurry. <Refer to the sketch on the next page.>
6. Enter the selected amplitude value in test mode 1923 (roller profile amplitude input).
7. Access the data in test mode 1443 (save roller profile data), update the adjustment data with it, and save it. (Turn
the unit OFF and ON to update the data and save it automatically.)
• Phase Input
1. Load A3 paper in the paper feed tray. (18 sheets or more.)
2. Execute test mode 1478 (printing for roller profile phase adjustment).
3. The 18 sheets are printed continuously, producing a black pattern with lines in landscape orientation.
4. Check the printed pattern, which shows a phase of 0, followed by 20, and so on up to a phase of 340.
5. Check the shading caused by transition from one print head to another. Select the phase of the pattern that is
least blurry. <Refer to the sketch on the next page.>
6. Enter the selected phase value in test mode 1924 (roller profile phase input).
7. Access the data in test mode 1443 (save roller profile data), update the adjustment data with it, and save it. (Turn
the unit OFF and ON to update the data and save it automatically.)
Note: Both the belt profile data, explained on the previous page, and the roller profile data explained on this
page are saved on both the Hard Disk (HDD) and Engine Control PCB as settings values. If either
one of these two components are replaced, the setting values are copied automatically from the one to
the other when the machine is powered ON after the replacement.
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No. 1924 No. 1923
ComColor Series (Revision 2.4)