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HP 365 colors have gone to #$&^(#@

Discussion in 'RIP Software & Color Management' started by Pat Whatley, Dec 28, 2020.

  1. Pat Whatley

    Pat Whatley Major Contributor

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    We brought in a new HP 365 back in July and everything was great. Bright, vivid colors. Good Pantone matching. Good color matching between jobs.

    About a month ago that all went to hell. We didn't change anything but suddenly banners are horrible. Lifeless, almost washed out colors, horrible vibrancy. We changed the profiles, cleaned the heads, calibrated, all the usual things but they still look bad. HOWEVER, if we print banners by telling the printer that adhesive vinyl is loaded the colors are great. We used that as a work around for a while but now I'm having the same problem with vinyl....dull, lifeless colors.

    I am trying to print another copy of a job we did two weeks ago. I simply reloaded the job from Onyx, it's the same ripped file, no changes have been made, and the same roll of IJ140 and the colors from the two prints are night and day different.

    Anybody have any idea where I should start trying to figure this out?
     
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  2. Geneva Olson

    Geneva Olson Expert Storyteller

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    Is your maintenance kit full? I had a print problem with my HP315 and it turned out that the maintenance kit was full even though the computer said I had 10% life left on it. The colors came back when I got a new one.
     
    Last edited: Dec 28, 2020
  3. balstestrat

    balstestrat Active Member

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    So if I read correctly you have not replaced the printheads?
    Please check and post here how many millilitres has every head printed.
    Also please do print a nozzle check and take a picture of that as well.
    Is there any particular colour that you see it? Blue, black, red etc. Or all colours?

    And to confirm, you have done Colour calibration to the banner profile?
     
    • Agree Agree x 1
  4. Behrmon

    Behrmon Pr. Bear-Mon

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    Don’t underestimate the impact of the optimizer head either.
     
    • Like Like x 1
  5. balstestrat

    balstestrat Active Member

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    Even if it were completely broken it still won't make colours dull or anything like that.
     
  6. Pat Whatley

    Pat Whatley Major Contributor

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    20201228_141845.jpg 20201228_141944.jpg 20201228_141951.jpg 20201228_141959.jpg 20201228_142010.jpg
    The TODAY/TWO WEEKS AGO photo makes the colors look a lot closer than they are. Two weeks ago it was almost fluorescent....today it's almost a mossy color.
     
  7. Pat Whatley

    Pat Whatley Major Contributor

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    20201228_142308.jpg 20201228_142332.jpg 20201228_142335.jpg 20201228_142339.jpg 20201228_142342.jpg 20201228_142345.jpg 20201228_142349.jpg 20201228_142352.jpg Screen shots of the printheads
     
  8. balstestrat

    balstestrat Active Member

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    Okay, no real winner there or obvious issues.

    Could you print this and take a good picture of it?
    It's an HP check plot made for issues like this. It should be printed 1:1.

    https://latexregistration.heleni.me/docs/HP Control Print -30x20inch.pdf

    And you are 100% certain that there is no way that RIP could have somehow different colour profiles by mistake? If you pull up an old job from the list and press "reprocess the job" it will RIP it again and not use the old settings.
     
  9. eahicks

    eahicks Magna Cum Laude - School of Hard Knocks

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    Noticed this with our old 260. Printing some poster paper for a customer, repeat job, that was dull and blues looked purple. Ran them again with an Avery vinyl profile and they were beautiful. I guess something changed in the profile? Who knows.
     
  10. Pat Whatley

    Pat Whatley Major Contributor

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    Makes perfect sense that an HP file labeled as 30x20 is only 30x14. :)
     
    • Hilarious! Hilarious! x 2
  11. Pat Whatley

    Pat Whatley Major Contributor

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    20201228_151621.jpg 20201228_151645.jpg 20201228_151639.jpg 20201228_151650.jpg 20201228_151755.jpg
     
  12. signman315

    signman315 Signmaker

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    I'm not sure but I've seen situations where the on board profiler is dirty/damaged and is taking off measurements and resulting in off profiles/calibrations without any user change/input...HP latex is a great machine for a lot of reasons but color accuracy has been something they've always struggled with in real world applications, i'm sure in the test lab under perfect conditions everything is great...they added the on board profiler to increase color accuracy/consistency issues from previous generations and it opens a whole new can of worms and potential problems...latex is a great technology imo but it's weakness is color consistency and so the on board profiler is kind of a "retrofit" to attempt to solve the problem, which it does for the most part...but what happens when it has issues? It's kind of like autopilot on an airplane, superior when it works, but the pilots get spoiled and crash the plane if autopilot goes awry lol...just my half a cent...may be a hardware/profiler issue? Of course check the heads and cleaning kit first....
     
  13. TomK

    TomK Member

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    Run a drop test on the print heads, in the svc menu.
     
  14. kanini

    kanini Member

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    Do you have automatic firmware updates? If the firmware updates it can in some cases (at least this was the case with some versions ago) cause you to have to recreate profiles or uninstall/re-install media profiles. A color calibration did not resolve the issue. Will give you weird issues like that but easily fixed by reinstalling the profile. Try to download and install a new similar banner media profile, RIP and print a job with the new profile and see what result you get.
     
  15. balstestrat

    balstestrat Active Member

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    Have to say I don't see any issues in that test plot. Other than the image (small town) being a little dull.
    This would point us more towards your RIP having an colour management issue or the print profile broken somehow. But that is extremely rare that it would break like this and with two profiles.

    Does the green print like this "mossy color" from the start to the end? There is no gradient of the right and wrong colour?
    Did it just happen suddenly one day or slowly went like that?
     
  16. Pat Whatley

    Pat Whatley Major Contributor

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    The mossy color is a good, solid print end to end, just the wrong color. A majority of what we do isn't color critical so shifts in color wouldn't really be a big deal and would probably go unnoticed. When they were noticed it was blamed on creating art in CMYK instead of RGB or vice versa. The first time I noticed it was printing photos on banners. There was no depth to them, they looked like they were old and faded, not at all like the prints we were used to.

    I'm going to dump all the profiles on the printer and in Onyx this morning and just start from scratch.
     
  17. balstestrat

    balstestrat Active Member

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    Make sure when you open a new file in Onyx that no one has changed the Quickset to something wrong.
     
  18. VTSigns

    VTSigns Member

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    I'm not familiar with Onyx but with Caldera there is a check box that enables color correction and I remember accidentally checking this box and it majorly screwed up how colors printed on my HP 360's. Not saying this is your case but make sure some global setting hasn't been accidentally enabled without you knowing. Just a thought.
     
  19. ikarasu

    ikarasu Very Active Member

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    If you don't have color correction turned on then the printers profiles won't do anything.

    That's the first thing I'd check...is color correction on on the main page of job editor? A good way to see if it's a printer issue is to toggle it, if it's on.... Turn it off and see if its more accurate. If it's off, turn it on and see if that fixes it. Thatll rule out a profile issue.
     
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