HP Designjet 4000 Printer series - Manual (Page 185)

12 How do I perform paper
advance calibration?
Your printer was calibrated at the factory to ensure that it advances the paper
accurately when using supported paper types in normal environmental conditions.
However, you may find it useful to recalibrate in certain circumstances:
●
Unsupported paper: different paper manufacturers provide papers with a wide
range of properties such as paper thickness or stiffness, which may benefit from
calibration. You can expect the best print quality when using HP's recommended
papers (see “How do I select supported paper types?” on page 94).
● Abnormal but stable environmental conditions: if you are printing in unusual
conditions of temperature or humidity (see “Tell me about environmental
specifications” on page 242), and those conditions are expected to remain stable,
recalibration may be worthwhile.
However, paper advance calibration assumes that you have an image quality problem
and that you have already followed the appropriate troubleshooting procedure for that
problem. If you have no particular problem, there is no need to perform the calibration.
Before performing paper advance calibration, use the Image Diagnostics Print to
check that the printheads are correctly aligned (see “How do I print the Image
Diagnostics Print?” on page 175).
Note In theory, paper advance calibration should improve print quality.
However, if you find the calibration print difficult to interpret, you may choose
the wrong paper advance setting and thus degrade print quality. In this case,
you can restore the original factory settings by selecting the
or icon at
the front panel, and then Paper advance calibration > Drawings/text or
Images > Select Pattern > Factory Default.
Overview of the calibration process
1.
Use the front panel to print a colored pattern stored in the printer seven times,
each time with a different paper advance setting.
2. Decide which pattern has been printed most successfully.
3. Use the front panel to tell the printer which pattern was best—and therefore which
paper advance setting to use in future.
Note 1 There are separate paper advance settings for each paper type name
in the front panel: each must be calibrated separately. When you calibrate a
particular paper type, the settings for all other paper types are unaffected.
Note 2 There are separate paper advance settings for Optimized for
drawings/text and Optimized for images: each must be calibrated separately.
Note 3 Papers from different manufacters may require different paper
advance settings even if they are of the same type, therefore the calibration
will be useful only for the particular paper you calibrated. Remember that,
when you perform the calibration, you will overwrite any previous paper
advance settings for this paper type.
183
How
do
I
perform
paper
advance
calibration?