This facility is available when printing with the PostScript driver.
HP Designjet T770 and T1200 Printer Series - Color management from printer drivers (PostScript printers)
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.
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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 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 difference (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.
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 specification of the colors these devices can reproduce. The standard way of encapsulating such information is in ICC profiles. As part of the solution, we provide the most common standards for the different devices.
The options are as follows.
CMYK color emulation
A traditional workflow defines color in the CMYK space. For best results, the colors must be adjusted to the printer, because different printers will produce different colors from the same CMYK data. If the image file you are printing was not created specifically for your HP Designjet 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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U.S. Web Coated (SWOP) 2 uses specifications designed to produce quality separations using U.S. inks under the following printing conditions: 300% total area of ink coverage, negative plate, coated publication-grade stock.
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U.S. Web Uncoated 2 uses specifications designed to produce quality separations using U.S. inks under the following printing conditions: 260% total area of ink coverage, negative plate, uncoated white offset stock.
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U.S. Sheetfed Coated 2 uses specifications designed to produce quality separations using U.S. inks under the following printing conditions: 350% total area of ink coverage, negative plate, bright white offset stock.
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U.S. Sheetfed Uncoated 2 uses specifications designed to produce quality separations using U.S. inks under the following printing conditions: 260% total area of ink coverage, negative plate, uncoated white offset stock.
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Europe ISO Coated FOGRA27 is designed to produce quality separations for standard ISO 12647 printing under the following printing conditions: 350% total ink coverage, positive film, coated paper.
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Euroscale Uncoated 2 uses specifications designed to produce quality separations using Euroscale inks under the following printing conditions: 260% total area of ink coverage, positive plate, uncoated white offset stock.
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Japan Web Coated (Ad) uses specifications developed by the Japan Magazine Publisher Association for digital proofing of images in the Japanese magazine/advertising market.
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Japan Color 2001 Coated uses the Japan Color 2001 specification for type 3 (coated) paper. It is designed to produce quality separations using 350% total ink coverage, positive film and coated paper.
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Japan Color 2001 Uncoated uses the Japan Color 2001 specification for type 4 (uncoated) paper. It is designed to produce quality separations using 310% total ink coverage, positive film and uncoated paper.
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Japan Color 2002 Newspaper uses the Japan Color 2002 for Newspapers specification. It is designed to produce quality separations using 240% total ink coverage, positive film and standard newsprint paper.
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JMPA: Japanese standard for offset press.
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Toyo is designed to produce quality separations for Toyo printing presses.
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DIC is designed to produce quality separations for Dainippon Ink Company printing presses.
note:These options have no effect if the application is defining its own CMYK space, known as calibrated CMYK or CIEBasedDEFG in PostScript terminology.
RGB color emulation
Your printer is provided with the following color profiles:
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None (Native): no emulation, for use when the color conversion is done by the application or operating system, and therefore the data arrive at the printer already color-managed.
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sRGB IEC61966-2.1 emulates the characteristics of the average PC monitor. This standard space is endorsed by many hardware and software manufacturers, and is becoming the default color space for many scanners, printers and software applications.
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ColorMatch RGB emulates the native color space of Radius Pressview monitors. This space provides a smaller gamut alternative to Adobe RGB (1998) for print production work.
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Apple RGB emulates the characteristics of the average Apple monitor, and is used by a variety of desktop publishing applications. Use this space for files that you plan to display on Apple monitors, or for working with old desktop publishing files.
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Adobe RGB (1998) provides a fairly large gamut of RGB colors. Use this space if you need to do print production work with a broad range of colors.
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