HP Latex 3000 Series

Color misalignment is most likely to be caused by printhead misalignment. To check printhead alignment,
print the printhead alignment diagnostics plot (see Printhead alignment diagnostics plot on page 140).
Bleed, halo, wicking
Sometimes a small color migration may be observed at the border between dierent colors (bleed). It may
also happen at the border between a color and blank substrate (no ink), reducing the sharpness of the shape.
On some substrates, a gloss halo can be observed at the border between colors.
There are three likely causes:
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Optimizer misalignment: There may be misalignment between the optimizer printhead and the other
printheads. To check the printhead alignment, print the printhead alignment diagnostics plot (see
Printhead alignment diagnostics plot on page 140). If necessary, perform a manual alignment, then
reprint the printhead alignment diagnostics plot.
If the problem is in the substrate axis direction, it may also be caused by incorrect substrate advance.
See Substrate-advance test print on page 147 and Substrate-advance compensation on page 146.
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Optimizer level, which may be too low for this substrate and ink density. Other associated defects may
also appear, such as coalescence or grain in the area lls due to low wetting of the ink on the substrate.
You can correct this problem by increasing the optimizer percentage in the substrate preset.
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Drying power, which may be too low for this substrate and ink density. Other associated defects may
also appear, such as coalescence or grain in the area lls due to low wetting of the ink on the substrate.
You can correct this problem by increasing the drying power leading/trailing percentages in the
substrate preset.
Low gloss, haze
On glossy substrates, the print may have lower gloss than expected, which is probably due to the optimizer
level. To investigate and correct this problem, try increasing and decreasing the optimizer percentage in the
substrate preset.
Color accuracy
Ideally, the colors that you see on the screen should match the colors in the print. In practice, you may nd
that the colors are not suciently accurate. There are three possible causes:
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Color calibration provides consistent colors, but consistent colors are not necessarily accurate.
However, if the combination of substrate and printheads has not been calibrated recently (or ever), that
ENWW Advanced print-quality troubleshooting 325