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Manual Calibrations 4-13
Use a printer’s loupe to select the pattern, since the lines in
the patterns may be difficult to see.
5. Press the , or ) control panel keys repeatedly until the
number next to the pattern that is closest to aligned perfectly
is displayed.
For example, if pattern +2.0 is the closest aligned, press the
, key to change the display to:
Bidi registration
Head 1: +2
If a printhead is extremely out of alignment, there may be no
pattern in alignment. Since the parallel bars are nominally
five pixels apart, you can add +5 or -5 to a pattern number to
shift the colored bars right or left by one bar. Alternatively,
you can perform the BiDi Registration repeatedly, which will
move the head in smaller increments, until the head is
aligned.
6. Press ! (Proceed).
Fig. 4-3. BiDi Registration patterns
(2 heads per color, six color version shown)