Rendering intent, Perform black point compensation – HP Designjet T7100 Printer series User Manual

Page 110

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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 different HP Designjet printer. Default: Off (no

printer emulation).

PostScript or PDF jobs only

Default CMYK source profile: you can choose from a selection of CMYK source profiles

recognized by the printer. Default: Europe ISO Coated FOGRA27.

Rendering intent: you can select the rendering intent.

Black point compensation: you can turn black point compensation on or off.

HP Professional PANTONE Emulation: you can turn HP Professional PANTONE Emulation

on or off.

Rendering intent

Rendering intent is one of the settings used when doing a color transformation. As you probably know,

some of the colors you want to print may not be reproducible by the printer. The rendering intent allows

you to select one of four different ways of handling these so-called out-of-gamut colors.

Saturation (graphics): best used for presentation graphics, charts or images made up of

bright, saturated colors.

Perceptual (images): best used for photographs or images in which colors blend together. It

tries to preserve the overall color appearance.

Relative colorimetric (proofing): best used when you want to match a particular color. This

method is mainly used for proofing. It guarantees that, if a color can be printed accurately, it will

be printed accurately. The other methods will probably provide a more pleasing range of colors

but do not guarantee that any particular color will be printed accurately. It maps the white of the

input space to the white of the paper on which you are printing.

Absolute colorimetric (proofing): the same as relative colorimetric, but without mapping the

white. This rendering is also used mainly for proofing, where the goal is to simulate the output of

one printer (including its white point).

Perform black point compensation

The black point compensation option controls whether to adjust for differences in black points when

converting colors between color spaces. When this option is selected, the full dynamic range of the

source space is mapped into the full dynamic range of the destination space. It can be very useful in

preserving shadows when the black point of the source space is darker than that of the destination

space. This option is allowed only when the Relative colorimetric rendering intent is selected (see

Rendering intent on page 102

).

102

Chapter 9 Color management

ENWW

Color management

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