Image Print to the rescue

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Hi Mark,

excellent article! Time for me to finally resubscribe to lula now, I guess.

After reprinting some 3 years later, you found more significant dE value and say: "..., but I can’t explain the reasons for the shift in test outcomes."

I have a suspicion: If it was really the same printer with the same print heads, let's keep in mind that piezo printhead nozzles are subject to wear. Nozzles diameters increase over time, which should lead to higher volume ink droplets, and I cannot imagine that the printer has any means of compensating for this, unless you create a new profile, as you did.

Best regards,
Erik

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In hindsight, that's maybe only a potential issue with web inkjet production printers, and I don't mean any of the large format printers seen at photo finishers, but the really big ones like Canon Prostream, Ricoh VC80000, Screen Truepress 500 series. PH life can be thousands of hours which translates into thousands of liters of ink through per individual printhead.

But even for our smaller photo inkjet printers, printhead performance should be expected to change over time.

[digitaldog]

But even for our smaller photo inkjet printers, printhead performance should be expected to change over time.

IF that were the case, my clients and I would have to update out output profiles. That isn't the case.

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Mark - As per usual, your dedication to precise information about printing is always appreciated.  Thank you for all the work you do to better educate all of us.

J. D.

[Mark D Segal]

Thank you all. Much appreciated.

Mark