HP 0706124 REV B - Manual (Page 95)

Manual Calibrations 4-7
Manual Bidirectional
Registration
Bidirectional registration is a method to align each of the print-
heads so that dot placement is accurate in both directions along
the X axis (along the direction of print head travel).
The bidirectional registration pattern consists of a series of verti-
cal lines. Half the pixels in this pattern are printed in one direc-
tion, half of them in the other direction. When the pixels are
accurately aligned, the pattern is clear. When the dots are not
aligned, the pattern appears fuzzy and ill-defined.
Tip AutoSet incorporates an automatic version of this
calibration. Try AutoSet first before running this
manual calibration (see “AutoSet” on page 4-2 for
details).
There are three bidi patterns from which to choose:
◆ Fine — allows 0.25 pixel adjustments
◆ Medium — allows 0.5 pixel adjustments
◆ Coarse — allows 1 pixel adjustments
For the most precise image reproduction, perform these calibra-
tions one after the other, starting with Coarse, then Medium,
then Fine.
1. Press the
v (Menu) key from the Front Page screen on the
control panel to display the menus.
2. Press the
E (Menu In) key display the Calibrate Printer
menu.
3. Press the
p key to highlight Manual Calibrations.
4. Press the
E (Menu In) key.
5. Press the
p key to highlight Manual BiDi Registration.
6. Press the
E (Menu In) key to select the option.
7. Press
B (Proceed).
The control panel displays this prompt:
Print a manual bidi registration page?
8. Press
B (Proceed).
9. Press the
p key repeatedly to highlight the Fine, Medium, or
Coarse option.