Resolution – HP Designjet T3500 Production eMFP User Manual
Page 242
Prepare the printer and the paper to print the diagnostic sheet
Turn on your printer and wait until it is functioning. Then select the paper on which the diagnostic plot is
going to be printed (you can reuse the diagnostic plot any time in the future, if it is saved carefully). Ideally,
the diagnostic plot should be printed on glossy paper, and you are highly recommended to do that if you use
your printer mostly for scanning or copying photo originals (posters, pictures printed on glossy paper, etc). If
you use your printer mostly to scan or copy matte originals, then you can use any matte white paper to print
the diagnostic plot. Please do not use recycled or tracing paper to print this plot. The size of the diagnostic
plot is 610 × 914 mm (24 × 36 in). It can be printed on any 914 mm (36 in) landscape or 610 mm (24 in)
portrait paper roll. You can also use a single sheet that is at least 610 × 914 mm (24 × 36 in).
Once the correct paper is loaded, if this paper permits color calibration then we recommend color-calibrating
the printer (see Using your printer).
You can print the diagnostic plot from the front panel: press
, then Internal prints > Scanner IQ plot or
Image-quality maintenance > Scanner IQ plot.
Visual check for errors while printing the diagnostic sheet
Once the diagnostic plot is printed, the first step is to check that all the patterns included in it are correctly
printed. The diagnostic plot, if printed correctly, should look like this:
Some of the most common defects that may appear in a printed diagnostic plot are described below. If you
find any of these problems, you should follow the recommended recovery procedure, all of which are
available by pressing
, then Image-quality maintenance at the front panel. Once the printer has been
diagnosed and it is working correctly, you can reprint the diagnostic sheet as described in
and the paper to print the diagnostic sheet on page 232
Resolution
By looking at pattern 7 you may find problems with the printer’s resolution for the loaded paper. Usually, this
test does not reveal a printer problem, but a defect in the paper, which may not be suitable for printing the
diagnostic sheet with the required quality.
Here is what you should see if all is well, followed by two defective examples.
232 Chapter 23 The scanner diagnostic plot
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