HP DesignJet T790 and T1300 Printer Series - Using your printer

HP Professional PANTONE Emulation
When you use a named PANTONE color in an image, your application will normally send to the printer a CMYK or
RGB approximation to that color. But the application does not take the printer or the paper type into account, it
merely produces a generic approximation of the PANTONE color, which will look dierent on dierent printers and
on dierent papers.
HP Professional PANTONE Emulation can do a much better job by taking into account the characteristics of the
printer and the paper type. The results look as similar to the original PANTONE colors as is possible on a given
printer using a given paper type. This technology is designed to produce emulations similar to those set up
manually by prepress professionals.
To use HP Professional PANTONE Emulation, all you have to do is to turn it on. In fact, it is normally on by default.
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In the Windows PostScript driver dialog: go to the Color tab and select HP Professional PANTONE Emulation.
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In the Mac OS PostScript Print dialog: go to the Color Options panel and select HP Professional PANTONE
Emulation.
You can also use the Embedded Web Server to print a swatch book showing emulations of PANTONE colors as
made by your printer, together with a measure of the color dierence (ΔE) between each emulation and the
original PANTONE spot color. So HP Professional PANTONE Emulation not only provides the closest match that
can be achieved on your printer; it also gives clear information on how close the emulation is to the original spot
color. See Printing PANTONE swatch books (T1300 PS) on page 78.
Color emulation
Your printer can emulate the color behavior of other devices: RGB devices such as monitors, and CMYK devices
such as presses and printers.
You can set color emulation in the following ways:
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In the Windows PostScript driver dialog: select the Color tab, and Printer Managed Colors.
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In the Mac OS Print dialog: select the Color Options panel, then select Printer from the Color Management
list.
For a good emulation, the printer needs a specication of the colors these devices can reproduce. The standard
way of encapsulating such information is in ICC proles. As part of the solution, we provide the most common
standards for the dierent devices.
The options are as follows.
CMYK color emulation
A traditional workow denes color in the CMYK space. For best results, the colors must be adjusted to the
printer, because dierent printers will produce dierent colors from the same CMYK data. If the image le you are
printing was not created specically for your printer, it will require some readjustment, which can be done using
one of the following options provided with your printer.
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None (Native): no emulation. The printer will use its default internal conversion from CMYK to RGB, without
following any color standard. This does not imply that results will be bad
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ISO Coated 2-ECI is based on the characterization dataset FOGRA39L.txt, applicable to the following
reference printing conditions according to the international standard ISO 12647-2:2004/Amd 1:
commercial and specialty oset, paper type 1 and 2, gloss or matt coated paper, positive plates, tone value
increase curves A (CMY) and B (K), white backing.
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Coated GRACoL 2006-ISO12647 provides GRACoL proong and printing on Grade 1 coated paper, ISO
12647-2 Paper type 1.
ENWW Color management from printer drivers (PostScript printers) 75