HP Scitex FB550 User Guide - Page 60

Manual BiDi Registration, Calibrate, Manual Calibrations, Proceed

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Figure 7-1 Media feed calibration pattern Manual BiDi Registration Bidirectional registration is a method to align each of the printheads so that dot placement is accurate in both directions along the X axis (along the direction of printhead travel). The bidirectional registration pattern consists of a series of vertical lines. Half the pixels in this pattern are printed in one direction, 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. NOTE: AutoBiDi Calibration is the automatic version of this calibration. Try AutoBiDi first before running this manual calibration (see Automatic calibrations on page 51). 1. Press Calibrate on the Printing page, then press Manual Calibrations in the menu. 2. Press Manual Bidi Registration to proceed. The control panel displays this prompt: Print a manual bidi registration page? 3. Press Yes. The control panel displays controls that enable you to position the registration pattern on the media. This enables you to feed the same sheet of media into the printer multiple times without overprinting previous patterns. For best quality when printing on rigid sheet-fed media, position the pattern approximately 20 cm (8 in) from the edge. 4. Use the control panel controls to position the pattern, then press Proceed. The printer prints the registration pattern, then prompts you to advance the media so you can inspect it. ENWW Manual calibrations 53

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Figure 7-1
Media feed calibration pattern
Manual BiDi Registration
Bidirectional registration is a method to align each of the printheads so that dot placement is accurate in
both directions along the X axis (along the direction of printhead travel).
The bidirectional registration pattern consists of a series of vertical lines. Half the pixels in this pattern are
printed in one direction, 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.
NOTE:
AutoBiDi Calibration is the automatic version of this calibration. Try AutoBiDi first before running this
manual calibration (see
Automatic calibrations
on page
51
).
1.
Press
Calibrate
on the Printing page, then press
Manual Calibrations
in the menu.
2.
Press
Manual Bidi Registration
to proceed.
The control panel displays this prompt:
Print a manual bidi registration page?
3.
Press
Yes
.
The control panel displays controls that enable you to position the registration pattern on the media.
This enables you to feed the same sheet of media into the printer multiple times without overprinting
previous patterns. For best quality when printing on rigid sheet-fed media, position the pattern
approximately 20 cm (8 in) from the edge.
4.
Use the control panel controls to position the pattern, then press
Proceed
.
The printer prints the registration pattern, then prompts you to advance the media so you can inspect it.
ENWW
Manual calibrations
53