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can anyone tell me why JV3 prints are stripy please?
Evening All,
Just wanting to double check some information I recieved today with everyone.
We’ve just had a Jv3 160sp installed and over the past month noticed that the printing was stripy. So altered all the feed control etc. Decided to print 50% black only to "calibrate it" and noticed that it was alternating between light 50% black and dark 50% black.
Through asking a load of questions I ended up with the answer of the jv3 wasn’t intended to be used at 4 pass and bi-directional printing. Bi directional is only intended for 16 pass printing.Yes the problem seems to be on bi directional printing only, but I would have thought that if the option is there it should be usable!
This is based on printing 720 x 720 onto a 5 year vinyl.
Anyone else found this problem?
or does anyone else print at 4 pass bi directional.I just felt a little fobbed off.
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7 Replies
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Gday,
Do you have any photo’s of the print quality you can upload?
I print @ 360×720 uni-directional – 4 way pass, after a large amount of tweaking it is printing quite well. Stripes are only noticeable on dark greens (hot)
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I do have photos uploaded onto our website.
(mod-edit)This sample was printed using a 50% half tone of black in bidirectional.
The top of the image is in uni-directional.And I’ve just finished printing dark green and had the same problem.
Yet. We’ve printed red onto banner media and it’s barely noticable.
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I am having problems with mine too..would like to see a copy of the print if you still have it around…
thanks,
Josh Steenbergen -
so are you getting horizontal striping on BiDirectional only not in the feed direction?
bi-directional on the JV3 in my view is not the best, aligning it a little strange as when you adjust the head from hi to lo, you can put carriage out of line by slight amounts which can cause allignment issues.
Fine – Bi tuning helps with getting Bi directional in line… a lot of adjusts are there
dave
ps. using jv3s not sp -
i am also getting this problem on 8-pass uni directional (2×4-colour setup), mainly with single-colour blacks and slightly in cyans. it’s not the feed compensation, seems to be the nozzles.
when i run a test draw a lot of the black lines are out of alignment or missing no head washes or nozzles washes sort it out.
can i post images into this forum?
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it seems that we needed a new black printhead, this has now been replaced and our problem has gone!
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yes, that is black print head going.
what we did was move ours to the light colours as they don’t get used as much as black, however recently we got perfect on all heads now after replacing all of them.
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