HP Scitex FB950 Printer series - Manual (Page 62)

NOTE: AutoBiDi Calibration is the automatic version of this calibration. Try AutoBiDi first before
running this manual calibration (see Auto calibrations on page 53 ).
1. Press the Calibrate key from the Front Page screen, then press Manual Calibrations in the menu.
2. Press Manual BiDi Registration on the menu.
The control panel displays this prompt:
Print a manual bidi registration page?
3. Press the Proceed ( ►) key.
The printer prints the calibration pattern you selected.
4. When the calibration page has printed, the control panel displays this prompt:
Bidi registration Head 1: 0
5. Examine the BiDi Registration pattern for the current head, and determine which pattern is the
closest to perfectly aligned.
Use a printer’s loupe (10x magnification or higher) to select the pattern, since the lines in the
patterns may be difficult to see.
Figure 4-2 Manual bidi calibration patterns
6. 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 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.
7. Press the ▲ key.
56 Chapter 4 Calibration ENWW