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  • why am i getting overspray in bi-di only with jv3?

    Posted by eddie meadows on 20 September 2006 at 05:07

    Hi guys,
    I’m seeing something interesting occur on a jv3. At any resolution in uni directional print quality is fine, however in bi directional there is a misty overspray. yellow in particular. the nozzle pattern is perfect. the heads appear clean around the edges too. Any thoughts….?

    eddie meadows replied 19 years ago 3 Members · 3 Replies
  • 3 Replies
  • John Childs

    Member
    20 September 2006 at 06:49

    Eddie,

    When my JV3 was installed I was told that better results would be obtained by using uni-directional. Perhaps that’s the reason. 😀

    Consequently I’ve never tried bi. Unfortunately workload and the fact that I am away for a long weekend tomorrow means that I haven’t got time to test it, but if you haven’t got an answer in about a week I would be happy to give it a go and see what happens.

    Sorry. Best I can do.

  • David Rowland

    Member
    20 September 2006 at 10:15

    hi
    overspray is mainly caused by hair in a nozzle, melted nozzle or a bad peizo head but not in Uni? thats confusing me, you have to show me a pic.

    Bad alignment can be corrected for bidirection but it is a good mode to use for vinyl, doubles your output speed. Try it John, if you see 5mm horizontal banding on your solid colours then that material isn’t working well with bidirectional.

  • eddie meadows

    Member
    21 September 2006 at 00:00

    I’ll try and post a few pics later. It’s interesting stuff…Almost like the worst allignment ever. I think it’s speed related too. the sharpness of text for example deteriorates if it prints at a higher speed…

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