HP Designjet T7100 User Manual

9 Color management
●Introduction
●
How colors are represented
●
A summary of the color management process
●
Color calibration
●
Color management from printer drivers
●
Color management from printer drivers (PostScript)
●
Color management from the Embedded Web Server
●
Color management from the front panel
ENWW 93
Color management
 

Introduction
Your printer has been engineered with advanced hardware and software features to ensure predictable
and dependable results.
● Gray, dark gray, and matte black inks provide neutral grays on all paper types
Color printers only ●Color calibration for consistent colors
● Color emulation of other HP Designjet printers
If you have a T7100 Mono printe r, you should read the sections below on color management and
color adjustment options; you can probably  ignore the other sections of this chapter....

Some paper types cannot be calibrated. For all other paper types, calibration should be done in any of
the following circumstances:
● Whenever a printhead is replaced
● Whenever a new paper type is introduced that has 
not yet been calibrated with the current set of
printheads
● Whenever the environmental conditions (tempe
rature and humidity) change significantly
You can check the color calibration status of the currently loaded paper at any time by pressing the
View information  key on the front panel....

3.The chart is scanned and measured.
4. From the measurements, the printer calculates the necessary correction factors to apply for
consistent color printing on that
 paper type. It also calculates the maximum amount of each ink
that can be applied to the paper.
Color management from printer drivers
Color management options
The aim of color management is to reproduce colors as  accurately as possible on all devices: so that,
when you print an image, you see very similar co lors as when you view the same...

Printer emulation
If you want to print a particular job and to see approximately the same colors that you would get from
printing the same job on a differe nt HP Designjet printer, you can use the emulation mode provided by
your printer.
NOTE: This option is available only when printing an HP-GL/2, PostScript or PDF job. It will work
correctly only when printing on plain,  coated or heavyweight coated paper.
●
In the Windows driver dialog:  select the Color tab, then  Printer Managed Colors , then
select...

●The lightness slider simply makes the whole print lighter or darker.
● The color sliders can be used to fade or emphasiz
e each of the primary colors in the print. The
primary colors may be red, green and blue; or  cyan, magenta and yellow; depending on the
color model used in the image.
The Reset button restores each slider to its default central position.
Printing in grayscale
You can adjust the gray balance of your prin t in similar ways under Windows and Mac OS:
● In the Windows driver dialog:...

●The lightness slider simply makes the whole print li
ghter or darker. This slider is available in the
same window as the other grayscale controls, exce pt under Mac OS X 10.4, where it is available
by selecting Lightness and Hue .
● The zone definition sliders can be used to de
fine what you mean by highlight, midtone and
shadow.
● The other controls for highlight, midtone and shad
ow can be used to adjust the gray balance of
highlights, midtones and shadows respectively.
The Reset button restores each...

emulation and the original PANTONE spot color. So HP Professional PANTONE Emulation not only
provides the closest match th at 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 on page 103 .
Color emulation
Your printer can emulate the color behavior of ot her devices: RGB devices such as monitors, and
CMYK devices such as  presses and printers.
You can set color emulation in the following ways:
●...

●Japan Web Coated (Ad)  uses specifications developed  by the Japan Magazine Publisher
Association for digital proofing of images in  the Japanese magazine/advertising market.
● Japan Color 2001 Coated  uses the Japan Color 2001 specif ication for type 3 (coated) paper.
It is designed to produce quality separations us ing 350% total ink coverage, positive film and
coated paper.
● Japan Color 2001 Uncoated  uses the Japan Color 2001 specification for type 4 (uncoated)
paper. It is designed to produce...

If you leave an option set to Default, the setting saved in the job will  be used. If the job contains no
setting, the front-panel setting  in the printer will be used.
● Color/Grayscale : you can choose to print in color, in  shades of gray or in pure black and
white.
● Default RGB source profile : you can choose from a selection of RGB source profiles
recognized by the printer.
● Printer emulation : you can choose to emulate a differ ent HP Designjet printer. Default: Off (no
printer emulation)....