HP Designjet T920 ePrinter series - Manual (Page 108)

● The lightness slider simply makes the whole print lighter or darker. This slider is available in the same
window as the other grayscale controls.
● The zone definition sliders can be used to define what you mean by highlight, midtone and shadow.
● The other controls for highlight, midtone and shadow can be used to adjust the gray balance of
highlights, midtones and shadows respectively.
The Reset button restores each control to its default setting.
TIP: To emulate grayscale printing from older Designjet printers, you can convert the file to be printed to
grayscale using an image editing program, and then use Print in Color and the appropriate emulation in the
driver.
Color management from printer drivers (PostScript printers)
This facility is available when printing with the PostScript driver.
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 different on
different printers and on different 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.
● In the Windows PostScript driver dialog: go to the Color tab and select HP Professional PANTONE
Emulation.
● In the Mac OS X PostScript Print dialog: go to the Color Options panel and select HP Professional
PANTONE Emulation.
100 Chapter 11 Color management ENWW