HP Designjet L25500 Printer Series - Add New Substrate and Image Quality Troubleshooting procedures

HP Designjet L25500 printer series Add New Substrate and Image Quality Troubleshooting
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7. 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:
1. To achieve the best dark colors in vinyl gloss and other substrates, please use as much black as
possible and as little composite (CMY) as possible when creating the ICC profile.
2. Light inks should be avoided as much as possible in high-density colors such as secondaries and
tertiaries (dark red, blue, green…).
3. 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.
4. Light inks should be used at most at 50% quantity of its maximum quantity. An excessive amount of
light inks might create gloss artifacts in vinyl gloss substrates
Please, refer to your RIP documentation on how to create or modify media presets.
Presets created for HP-branded substrates have been created following the recommendations stated above
in order to optimize black and dark colors. You can try them selecting the HP media preset for your
substrate family in
http://www.hp.com/go/L25500/solutions
.
To improve black and dark colors even for non-HP branded self-adhesive vinyl substrates, you may find
media presets with optimized dark-color reproduction. In particular, HP Permanent Gloss Adhesive Vinyl
and HP Air Release Cast Gloss Adhesive Vinyl contain specific print modes called “High-KOD”.