HP DesignJet T790 and T1300 Printer Series - Using your printer

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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 prole embedded in the image and the ICC
prole of your printer and paper type.
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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. The details of this process
depend on the graphics language that you are using.
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PostScript (PostScript printers): the PostScript interpreter module performs the color conversion
using the proles stored in the printer and any additional proles sent with the PostScript job. This
kind of color management is done when you are using the PostScript driver and you specify printer
color management or when you send a PostScript, PDF, TIFF or JPEG
le directly to the printer through
the Embedded Web Server. In either case you have to select the proles to use as default (in case the
job doesn't specify any) and the rendering intent to apply.
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Non-PostScript (PCL, RTL, HP-GL/2): the color management is done using a set of stored color tables.
ICC proles are not used. This method is somewhat less versatile than the alternatives, but is a little
simpler and faster, and can produce good results with standard HP paper types. This kind of color
management is done when you are using a non-PostScript driver and you specify printer color
management, or when you send a PCL, RTL or HP-GL/2 le directly to the printer through the
Embedded Web Server.
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, when you select ColorSync, color
management is performed by Mac OS, and it is done based on the ICC proles of the specied paper
type. ColorSync is available with the PCL3GUI driver only.
ColorSync can be selected from the Color Matching panel.
You are recommended to consult the Knowledge Center (see Knowledge Center on page 171) to see how to use
the color management options of your particular application.
To choose between Application-Managed Colors and Printer-Managed Colors:
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In the Windows driver dialog: select the Color tab.
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In the Mac OS Print dialog: select the Color Options panel.
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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 dierent 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.
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In the Windows HP-GL/2 or PostScript driver dialog: select the Color tab, then Printer Managed Colors, then
select Printer Emulation from the Source Prole list. You can then select from the Emulated Printer list.
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In the Mac OS Print dialog (non-PostScript printers): select the Color Options panel, then Color Management
> Printer, then select Printer Emulation from the Source Prole list.
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In the Mac OS Print dialog (PostScript printers): select the Color Options panel, then select from the Printer
Emulation list.
72 Chapter 10 Color management ENWW