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  • Can anybody explain this?

    Posted by Simon Worrall on August 1, 2023 at 7:50 am

    A few weeks ago I had a serious head strike on my HP335 latex caused by vinyl wrinkling. It destroyed one of the black cyan heads, and it wouldnt fire at all.

    No problem, I renewed it.

    A week ago the other Black Cyan head got blocked. No problem, it had about 3000 ml through it, so that was to be expected.

    Then last week the first black cyan head blocked up.

    Ok, methinks this is a new head, and must still be under warranty. The supplier was happy to credit the cost, on condition I return the other one.
    However, before I took it out I read the info on the head.

    It showed 2,500 ml had already been used!

    This is clearly impossible, as I had had it in for about 6 weeks, and even a heavy user would expect it to still be well under the warranty amount (1000ml I believe)

    Once the supplier checks this they wont want to credit me (of course.)

    So. Can these heads read incorrectly? It was certainly a new head when I put it in, it came from a sealed packet with the plug and the head cap.

    I dont understand. Has anybody else experienced mis reading heads?


    Colin Crabb replied 8 months, 2 weeks ago 3 Members · 6 Replies
  • 6 Replies
  • Hugh Potter

    August 1, 2023 at 12:14 pm

    Not an issue I’ve noticed on my 360 Simon, in fact, my now 2.5yr old machine is still on it’s original set of heads and printing prefectly. I bought a full set when I had issues a couple of months back and was shocked to realise I hadn’t replaced any but, following a head clean and re-ripping the print, it’s been great! A couple of the heads are over 4000ml!

    That’s no help to you of course!

  • Colin Crabb

    August 1, 2023 at 12:31 pm

    Not seen that before – you can go into the system via web browsers and check in more details, making sure the install date & serial numbers match.

    Interesting you say Cyan / Black head, we’ve had one fail at 50ml, one dead-on-install last week, cyan channel just ‘stopped’.

    Oh and my record on the 360 was 9980ml used before it required changing!

    • Hugh Potter

      August 1, 2023 at 1:38 pm

      thats some volume through a head!!

      FYI, I thought that the heads were K/Y, LC/C, LM/M ? is the 335 different in that it has a C/K head?

      • Colin Crabb

        August 1, 2023 at 4:33 pm

        831: 310 330 & 360 Printer Family

        CZ677A HP 831 Cyan/Black Latex Printhead

        CZ678A HP 831 Yellow/Magenta Latex Printhead

        CZ679A HP 831 Light Magenta/Light Cyan Latex Printhead

        CZ680A HP 831 Latex Optimizer Printhead

        • Hugh Potter

          August 2, 2023 at 9:35 am

          that’ll teach me to open my mouth before thinking!!!!

          In fairness, I’ve only used Latex for 8 years!

          • Colin Crabb

            August 2, 2023 at 12:49 pm

            lol don’t worry I tried to put a 700series printhead in the 315 last week……

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