Printer emulation, Color adjustment options – HP Designjet T620 Printer series User Manual
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There are two basic approaches to color management for your printer:
●
Application-Managed Colors: in this case your application program must convert the colors of
your image to the color space of your printer and paper type, using the ICC profile embedded in
the image and the ICC profile of your printer and paper type.
●
Printer-Managed Colors: in this case your application program sends your image to the printer
without any color conversion, and the printer converts the colors to its own color space. Color
management is done using a set of stored color tables; ICC profiles are not used. This method is
somewhat less versatile than the previous methods, but is a little simpler and faster, and can
produce good results with standard HP paper types.
NOTE:
There are only two color spaces that the printer can convert to its own color space using
the stored color tables: Adobe RGB and sRGB if you are using Windows, Adobe RGB and
ColorSync if you are using Mac OS.
ColorSync is the Mac OS built-in Color Management System; so, in fact, when selecting ColorSync
it is the built-in color management part of Mac OS that is performing the color management, and
it is done based on the ICC profiles of specified paper type. ColorSync is available with the PCL
driver only.
You are recommended to consult the Knowledge Center at
how to use the color management options of your particular application.
To choose between Application-Managed Colors and Printer-Managed Colors:
●
In the Windows driver dialog: select the Color tab.
●
In the Mac OS Print dialog: select the Paper Type/Quality panel, then Color.
●
In some applications: you can make this choice in the application.
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 different 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 job. It will work correctly only when
printing on plain, coated or heavyweight coated paper.
●
In the Windows HP-GL/2 driver dialog: select the Color tab, then Printer Managed Colors, then
select Printer Emulation from the Source Profile list. You can then select from the Emulated Printer
list.
●
In the Mac OS Print dialog: select the Paper Type/Quality panel, then Color > Printer Managed
Colors > Emulated Printer.
Color adjustment options
The aim of color management is to print accurate colors. If you perform color management correctly,
then you should be able to print accurate colors with no need of any manual color adjustments.
However, manual adjustments may be useful in the following situations:
●
If your color management is not working correctly for some reason
●
If you want colors that are subjectively pleasing rather than accurate
The printer driver provides different adjustment facilities depending on whether you are printing in color
or in grayscale. If you are printing in pure black and white, there are no color adjustment options.
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Chapter 7 Color management
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