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Stupid inks and nozzle loss help!!!!!
Really had it up to my tit with dodgy ink cartridges. I’ve had my machine maintained new dampers and calling station Printhead not too long ago and non stop issues with a particular brand of ink that they swapped out from my original Roland inks after a particular uv ink product was not working great on my machine a xr640 !! One minute I have full nozzles the next all gone or mostly bit alternated on all ink carts and yes I know it’s no bad lie a or air coming in it’s the bloody ink cartridges having pockets of air in them. Yes I shake well before use and let settle and after a while I get the same crap. Not to mention printing on banner material with the correct profile and after three days if I rub my finger against it gently!! It shows like powder on my finger so it’s not entirely adhered. I regret so much and for a one man band setup for reasons of health I have had enough of being messed about by companies that claim to have our best interest. Feeling extremely agree !!!!!!!!!!
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16 Replies
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Infuriating…
but probably not air bubbles coming from the carts as the dampers get rid of all of that.
If it’s pretty flaky on just ONE head then think the spigot on the head manifold might have a crack in it..manifests itself as an intermittent drop out.
Dampers are cheap – replace them anyway in case the o-ring seal is past it’s best.
If manifold cracked it might seem a bit daunting but entirely doable yourself if you feel brave (head out time).
DAve
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That’s good advice from Dave. Could well be a fractured manifold. Also, there are a couple of o rings along the ink line, from cartridge to damper. They could be letting in air too. Try taking the top panel off and see if you can identify any small air bubbles getting in somewhere. Failing that, get somebody reputable to pop in a check it out for you. You’re going to end up spending a lot more on wasted materials and late nights than the cost of an engineer.
Stafford
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It’s definitely not that as they have been replaced. I didn’t have the problem with original inks and they companies own technician suggested the carts can have air bubbles large ones. Also it can happen on any colour and on both heads so that rules out technical problem with machine. Believe me tried everything. You could do a test print and it’s like new only to find the next had 90% missing etc
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Changing heads is not daunting I have repaired many machines in the past. Anything from transistors on mother boards to microscopic fuses and re tracing lines etc heads and manifold are easy. All new parts just had this issue since changing inks from Roland.
The countless times a medium, powerful clean or even manual suction via tube from the dampers tells me alone that there is plenty of resistance and their is no air or gaps in the usual suspected parts.
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quote Stafford Cox:That’s good advice from Dave. Could well be a fractured manifold. Also, there are a couple of o rings along the ink line, from cartridge to damper. They could be letting in air too. Try taking the top panel off and see if you can identify any small air bubbles getting in somewhere. Failing that, get somebody reputable to pop in a check it out for you. You’re going to end up spending a lot more on wasted materials and late nights than the cost of an engineer.
Stafford
I use to be a engineer lol
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Hi
could be as Dave & Stafford have said but have seen the same happen when flushing and changing inks. Basically two incompatible inks solidify inside the head and float around blocking the nozzles intermittently. Think i would be speaking to the engineer who has been playing around with it.Kev
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No it’s not that the engineer is from a big company you all know. He did a good job swapping the inks and i don’t think the heads get blocked randomy because there would be a different issue. A clean of heads clears the problem but it re occurs after a few more prints. It’s definitely air not blockage
Plus these inks are suppose to be plug play compatible and they cleaned through before refitting new inks. Personally I feel I should have been put on the inks I was before Roland original not their own brand
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Go back to Roland inks it’s a no brainier , what if you were printing a long run on
Expensive cast wrap and it dropped out wasting all that had been done Nightmare stress , nothing worse that being unreliable -
quote Chris j griggs:Go back to Roland inks it’s a no brainier , what if you were printing a long run on
Expensive cast wrap and it dropped out wasting all that had been done Nightmare stress , nothing worse that being unreliableThis has happened and yes I intend to without doubt! I have 20 odd of their cartridges to be rid of, they should have replaced with my original setup not their variant of ink
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ONE bank or across random heads?
I’m sure we’re all agreed that no ink coming out is basically no ink or negative pressure at the nozzles.
Obviously not blocked.
From experience if it’s just one / one colour, don’t discount the dampers as they’ve been changed recently. Crappy ink…with larger than usual pigment can easily block the screen in the damper reducing flow…I still think the idea of bubbles in the carts is odd as they are sealed Mylar(?) bags of solvent, but air will leak in at any joint with a failed o-ring (and not necessarily ink leak out) even as far back as the ‘spike’ that the cart pushes onto…right up to the carriage.
The cleaning cycle will pull ink forcibly to the head/damper…it’s amazing how much you can print on what’s in a non-flowing system. Still leaning towards a negligible air leak as isn’t the ink is drawn along the pipes under the minuscule capillary action/vacuum when the piezo heads squeeze out the ink droplets…easily negated if not 100% sealed from cart to head.
As usual, fault diagnosis via internet is nigh on impossible!
Dave
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quote DavidRogers:ONE bank or across random heads?
I’m sure we’re all agreed that no ink coming out is basically no ink or negative pressure at the nozzles.
Obviously not blocked.
From experience if it’s just one / one colour, don’t discount the dampers as they’ve been changed recently. Crappy ink…with larger than usual pigment can easily block the screen in the damper reducing flow…I still think the idea of bubbles in the carts is odd as they are sealed Mylar(?) bags of solvent, but air will leak in at any joint with a failed o-ring (and not necessarily ink leak out) even as far back as the ‘spike’ that the cart pushes onto…right up to the carriage.
The cleaning cycle will pull ink forcibly to the head/damper…it’s amazing how much you can print on what’s in a non-flowing system. Still leaning towards a negligible air leak as isn’t the ink is drawn along the pipes under the minuscule capillary action/vacuum when the piezo heads squeeze out the ink droplets…easily negated if not 100% sealed from cart to head.
As usual, fault diagnosis via internet is nigh on impossible!
Dave
What’s strange is it’s happened on all buy the yellow inks?? Medium clean on specific head not on both and it’s back again. But this leak does not solve the crap adhesion on banner material?
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Have the cap tops been done mate?
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quote James Sahota:Have the cap tops been done mate?
Yes James literally one block of colour will drop I’ll do medium clean revive then print then may go again or another totally different colour drop out. Bloody nightmare
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Hi
Did you ever get a resolve to this issue, we are experiencing very similar issues with our Mimaki JV33 & JV34 on a certain 3rd party ink.
:banghead: :banghead:
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quote Alex_Lyon:Hi
Did you ever get a resolve to this issue, we are experiencing very similar issues with our Mimaki JV33 & JV34 on a certain 3rd party ink.
:banghead: :banghead:
Hope so I had them round cleansed heads etc and I have printed once since as I’ve been on a break. Not sure until I use more to be honest. Hope so because I’ve lost enough hair
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Are you still running on the same inks or did you change supplier ?
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