3. Color calibration takes about 16 minutes and uses about 1 m (39 in) of paper.
4. Printhead alignment takes about 16 minutes and uses about 1.3 m (51 in) of paper.
5. After the calibration, the printer uses the results to calculate calibrations for all other paper types.
If the print-bar calibration fails with an error message or leaves some dies misaligned, print the Diagnostics
Plot and make sure there are no large contiguous groups of missing nozzles. If there are large contiguous
groups of missing nozzles, follow the printhead recovery procedure.
Select all
By checking the Select all box, you can do both basic routines: check and recover the print bar, and calibrate
the print bar. This can be useful when these routines have not been done for a while, or if you are unsure
which routine is appropriate.
Advanced options
You can go to Advanced options to run specic custom calibrations to solve particular kinds of problems.
Enhanced printhead recovery
This procedure aims to recover a printhead that has been degraded by heavy usage, or when other methods
have failed. It is an intensive procedure to recover printheads with severe degradation, such as multiple
nozzles malfunctioning, or color mixing. It may also be used to optimize printheads for jobs with high ink
coverage. See Check and recover print bar on page 103.
NOTE: First print a diagnostic plot to identify which printheads require cleaning and thus avoid waste of ink.
You can select particular printheads for enhanced recovery. In the example below, the aected printhead
would be number 3.
Page length accuracy
If you nd that printed page lengths are slightly incorrect, go to the print quality app and select Page length
accuracy.
The next screen shows the loaded paper types. Select the one you need to correct automatically or manually.
If you press Start (recommended), the printer makes an automatic correction. The front panel warns you to
allow some time and paper for the correction. If you select Adjust manually, you must enter the value of the
length error.
For example, you may print an A0 (1189 mm) page, but you measure the print and nd that its length is 1187
mm. You should select A0 and a measured page length of 1187 mm. The page length correction is
automatically updated to +2 mm when you enter the measured value.
ENWW Advanced options 105
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