HP Latex 3000 Printer - Manual (Page 134)

In order to print accurate colors, it is necessary to convert the color values in your files to the color values
that will produce the correct colors from your printer, your inks, and your substrate. An ICC color profile is a
description of a printer, ink, and substrate combination that contains all the information needed for these
color conversions.
These color conversions are performed by your Raster Image Processor (RIP), not by the printer. For further
information on the use of ICC profiles, see the documentation for your application software and for your RIP.
Substrate-advance compensation
Accurate substrate advance is important to print quality because it is part of controlling the proper
placement of dots on the substrate. If the substrate does not advance the proper distance between printhead
passes, light or dark bands appear on the print, and there may be an increase in graininess.
The printer has a substrate-advance sensor and is calibrated to advance correctly with most of the
substrates that appear in the Internal Print Server. When the substrate is loaded, the substrate-advance
sensor checks the substrate and decides whether it can be adjusted automatically or not. If not, the
automatic adjustment is disabled.
If the substrate cannot be adjusted automatically by the substrate-advance sensor and the substrate
advance is not correct, you may wish to change the substrate-advance compensation manually. See
Troubleshoot print-quality issues on page 265 for steps to determine whether substrate-advance
compensation will help you. In general, substrate-advance calibration is recommended when you see print-
quality problems related to substrate advance, or when you define a new substrate.
NOTE: Manual substrate-advance compensation is available only when the substrate-advance sensor is
disabled—automatically, or manually through the Printing adjustments button in the Internal Print Server
main window.
The substrate-advance sensor may not work correctly if it is dirty. See Clean the substrate-advance sensor
on page 202 .
If the sensor was dirty, after cleaning it the advance compensation already calculated may not be valid, so
you are recommended to set the advance compensation for this substrate to zero and check that the advance
is correct. If the advance is still not accurate, follow the advance compensation process, bearing in mind that
the sensor is not dirty and probably your substrate type is not compatible with it.
Manual substrate-advance compensation
While printing, you can view and change the substrate-advance compensation of the currently loaded
substrate at any time from the Internal Print Server by selecting the print job and then the Printing Adj.
button, or by selecting Printer > Printing adjustments.
Alternatively, you can use the Print adjustment button in the Internal Print Server main window. This opens a
dialog box with an advance compensation section, in which there are three main areas:
128 Chapter 6 Printer calibration ENWW