Match all your clients' custom colors with the HP Indigo Ink Mixing System. This stand-alone device allows operators to mix a wide range of special colors from a set of base inks. The HP Indigo Ink Mixing System combines state-of-the-art color measurement technology with HP ElectroInk to make color matching a precise and predictable procedure. Fully automated software guides the user through steps of measurement and analysis to determine the best color match to the original sample and to mix new ink-easily and efficiently. If you prefer, special HP IndiChrome Off-Press inks can be mixed and shipped to you from HP at any time.
DO use the 1:10 mix and try the powerpurge.
Mix 1ml printhead cleaning solution (search internet) with 10ml of dye ink.
DONT USE ALCOHOL or any other kind of chemical solution except the printhead cleaning solution.
If you wont have success after doing it twice the ph is clogged and cant be fixed anymore!
The printheads construction is like a sandwich: In front of the nozzels is a filter to clean the ink before pressing it through the nozzels onto the paper. That is the main reason why some ink chanels will clog. You cant open the printhead to clean the filter.
Drop some ink into normal water and watch the flow:
dye ink will mix with water (like dropping a paintbrush with watercolors into the cleaning glass) while pigmented ink wont do so:
http://www.druckerchannel.de/artikel.php?ID=469
(translate german by help of google)
The 1:10 mix wont affect the quality though ink always consists of 98-99% of water! It prevents the ink from drying out.
The bk part of the printhead has another stand-alone construction and doesnt need any "support" by help of additives.
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