HP Designjet L28500 HP Designjet L28500 Printer Series - User's guide - Page 76

Color reproduction tricks

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Color reproduction tricks Latex inks are a new technology, and there are some important guidelines when doing color separations (such as when creating or modifying a new media preset within your RIP) that will help to optimize the printer output in terms of color gamut, ink usage and print quality. These are as follows: ● To achieve the best dark colors in vinyl gloss and other substrates, use as much black and as little composite (CMY) as possible when creating the ICC profile. ● Light inks should be avoided as much as possible in high-density colors such as secondaries and tertiaries (dark red, blue, green, ...). ● Light inks should be restricted to the lowest-density colors, starting the use of dark inks as early as possible. Typically, a color of more than 50% density should not contain any light inks. ● Light inks should be used at no more than 50% of maximum quantity. An excessive amount of light inks can create gloss artifacts in vinyl gloss substrates. ● For tiling applications, using the RIP to add a small inter-pass delay of 0.5 to 1 second will yield better color matching from left to right. Please refer to your RIP documentation for details of how to create or modify media presets. Presets for HP-branded substrates have been created following the above recommendations in order to optimize black and dark colors. You can find the HP media preset for your substrate family at http://www.hp.com/go/latexmediafinder/. 70 Chapter 5 Substrate settings ENWW

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Color reproduction tricks
Latex inks are a new technology, and there are some important guidelines when doing color
separations (such as when creating or modifying a new media preset within your RIP) that will help to
optimize the printer output in terms of color gamut, ink usage and print quality. These are as follows:
●
To achieve the best dark colors in vinyl gloss and other substrates, use as much black and as little
composite (CMY) as possible when creating the ICC profile.
●
Light inks should be avoided as much as possible in high-density colors such as secondaries and
tertiaries (dark red, blue, green, ...).
●
Light inks should be restricted to the lowest-density colors, starting the use of dark inks as early as
possible. Typically, a color of more than 50% density should not contain any light inks.
●
Light inks should be used at no more than 50% of maximum quantity. An excessive amount of light
inks can create gloss artifacts in vinyl gloss substrates.
●
For tiling applications, using the RIP to add a small inter-pass delay of 0.5 to 1 second will yield
better color matching from left to right.
Please refer to your RIP documentation for details of how to create or modify media presets.
Presets for HP-branded substrates have been created following the above recommendations in order to
optimize black and dark colors. You can find the HP media preset for your substrate family at
go/latexmediafinder/
.
70
Chapter 5
Substrate settings
ENWW