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New Printhead not working correctly
Hello, thank you very much in advance for your help, hope I could get some advice here, our Mimaki CJV150 printer just had a new printhead(roland printhead VS-640) installed last week but sometimes it printed incorrectly(please see photos attached), we had a Roland printhead (HEAD INKJET VS-640) installed by the engineer and we have been told that the Roland head was the same as Mimaki original printhead and should not have any issue, please any advice? thank you.
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6 Replies
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Hopefully, Stafford will see this, and may be able to give you an answer. I can’t really see why they didn’t just use the correct Mimaki head. If it was me, I’d have the engineer back out to replace it.
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The head is for Roland and not Mimaki… yes physically the head are the same but Epson tune them differently according to each machine/manufacturer and ink used. So no surprised there, well a part from the fact that an knowledgeable / reliable engineer would do that!! :shocked:
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That’s interesting Loic, my understanding was that the voltages and waveforms were all stored in the head memory board. I could be mistaken though, of course.
Anyway, nice speaking to you today, Leo.
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We’ve successfully fitted a Mimaki head to a Roland VS. Not tried it the other way around and always wanted to know if it could be done. Generally, if you get a nozzle test print the head is okay. I’d give cleaning the linear encoder a try.
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That’s what I suggested to Leo, Mat. I have fitted VS printheads to JV/CJV-150/300 in the past, and it does work.
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Hi Stafford,
yes and no, there’s some configuration elements in the memory board that’s true but there’s an initial head manufacturer setting too. As you’ll know there’s no memory board on the Roland heads, internal/native head frequency will be set by epson. If you remember in the old days you could use a JV5 head in a JV33 but not the otherway round for example.
If you ask Espon for a DX6 head they will have about 15 different references, all relating to nozzle coating, nozzle plate coating, internal frequencies etc…Hi Mat,
yes that works, although again the head won’t have the specific manufacturer, printer model and ink setting. That means you can’t expect optimal performance or life expectancy.I don’t see any point messing about with heads, you never really save any real money, better stick with OEM stuff. And same goes for wipers and caps!! never understood people taking a risk on a £2k head to save 20 quids on a cap top or a tenner on a wiper…
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