Check Pattern Printing - Epson 680Pro - LQ B/W Dot-matrix Printer Service Manual

EPSON Stylus COLOR 680/777/777i

5.1.12 Check pattern printing

This function prints following several kinds of the check pattern on the A4 paper. By
printing this A4 pattern, you can check the all adjustment result on the printed result.
NOTE: 2 sheets of the A4 Plain paper is used for this printing. So, set 2 sheets in
the ASF unit before starting the program.
1. Choose the "Check pattern printing" and click the "OK" button to print the A4
check pattern in the following menu.
Figure 5-26. Choose the Check pattern printing
Adjustment
2. After complete the printing, following message is displayed on the bottom column
in the menu.
Figure 5-27. Complete the printing
3. Check the all printed patterns on the 2 sheets of the printed paper.
If you find out any incorrect portion, Choose the adjustment menu and try to adjust
it.
n The check point for the first solid pattern (beta pattern 360 x
360dpi normal dot) in the A4 Check pattern is as follows.
- Any white line is not observed
- Uneven banding is not observed extremely.
n The check point for the second Nozzle check pattern (360dpi) is
as follows.
- Ink is fired from all nozzles.
- Uneven banding is not observed extremely.
Overview
Revision B
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