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HP Latex - Gray is Purple

HP Latex 100 Series

#1 Inline Blueprint 6 months ago

Hello all. First time poster here. I also have a lot to learn in the print world so bare with me. I have an HP Latex 110 and I use Flexi to rip & print. We often have an issue where a simple gray (IE - 30% black) comes out looking purple. Do I simply need to use a "rich gray"? Or maybe I need to reduce the optimizer level or perhaps there is a print setting I can check or uncheck? Please advise.

#2 HP-Sonia 6 months ago

I believe you are facing issues on the RIP but not on the printer. As far as I know, Flexi SAI has a setting in Default job Properties (in the RIP and Print window), in one of the tabs which allow printing in GRAYSCALE, try playing with this in order to obtain real greys, but I am still recommending running a specific SAI training. You can ask your reseller for more information.

#3 Paul Wagner 6 months ago

The first thing that should be checked is the nozzle performance of the printer. Pay particular attention to printhead number 2, which delivers light cyan and light magenta inks on the Latex 110 printer. The nozzle test print is located under the Image Quality Maintenance Menu > Clean Printheads > Test Print. If you are missing blocks of nozzles, run one or more cleanings to attempt to recover the missing nozzles.

It is possible to disable Color Management in the SAI RIP software. When doing so, the raw CMYK values in the file are passed through to the printer without modification in the RIP. See attached screen grab for where this is done in the SAI RIP.

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#4 Muzeo_Leno 3 months ago

It required me replacing print heads to correct this issue. My printer is the 560, however.

The opinions expressed above are the personal opinions of the authors, not of HP.

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