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In Lieu of Engineer help
Can anyone help??
We’ve been running a Jetbest bulk system since Monday which appears to have been running ok on one of our Valuejet1604s.
However, since late on Wednesday and periodically yesterday the machine seems to have developed a printing fault we’ve never had before.
The best way to describe it is that if I run a 300mm solid block of each colour (CMYK), the first 50-80mm or so is streaky before it settles down across the rest of the colour although it is still bandy across the rest of each colour (more so on the cyan amd magenta). One of my colleagues has suggested that it may be down to the ink viscosity causing an issue with the dampers.
Nozzle check is pinpoint with no drop jets.
We’ve ran approx 500ml of each colour through the machine.
Can anyone advise as this is causing me major grief.[/img]
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14 Replies
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I found that you need more heat for third party inks. The banding effect appears to be caused by the 2 adjacent passes, in effect flowing apart due to
the ink not being dry. Upping the print heat to 50-55 cured the problem on our
JV3, although I have now switched back to OEM ink. -
Hi Jamie
Yeah, I’ve tried the heat set at maximum. Still the same.
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Hmmmm, not sure what else to suggest. We had far too many issues for us to
consider sticking with 3rd party, and I just haven’t got time to mess about with
re-profiling and changing settings, when I know OEM just works. Never again… -
We’ve ran OEM inks since we got the machine about 3 years ago. Been running Lyson Inks for about 4 months with no probs apart from the odd chip issue.
This is a complete pain in the @rse.
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We had a problem similar to this on larger prints. It’s a machine that uses a drum though so don’t know if it would be the same type of problem. Our printer tech. said it was from the Yellow toner which also somehow acts as a lubricant for the printer. It wasn’t lubricating the machine correctly and thus caused the streaking. I don’t know exactly what he did to fix it. I believe he replaced something on the inside though. Probably not much help to you.
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Hi
sounds more like the damper is clogged due to the mix of inks. Dampers should be changed when changing ink types because trace amounts of ink & particulate is left in the dampers even after flushing.Kev
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You could try increasing the height of your bulk tanks.
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Do not force the printer to start, the machine has to be allowed to warm up fully and start printing on it’s own.
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many things it could be…. flow of ink … suction … clogged damper… air bubble in ink lines … bulk tanks cap lids screwed very tight with no air getting in.
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Hi All
Binned the bulk system as the ink was clogging in the tubes and dampers. Piece of sh*t. Lesson learned there. lol
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Sounds like you didn’t properly flush the old ink from the system before making the switch.
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Hi Bill. That probably didn’t help but the reseller assured me it was plug and play. I’m now using the inks from Lyson. Half of the OEM costs and seem to be working fine. Ironically I had changed from Lyson to the bulk system because half of the chips wouldn’t read. However, they seem to have sorted that out now. Not had any misreads for the last 4 months. Happy days.
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Hi John, what a pity you didn’t flush your system before running the new ink. I’ve been using these inks for ages without any problems whatsoever. Sounds like it was a tough lesson for you. I’m sure Jetbest would have advised a meticulous system flush before loading their ink. Maybe you’ll revisit the change at some future time, certainly the cost savings must make the switch an attractive proposition. Good luck mate.
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We just switched to JetBest inks on our JV3. Same problem banding on all colours with yellow worst. Was also told plug and play and even told I could put the OEM inks in with the third party inks as they are totally compatible. Not had the nerve to do that yet! Intend to try increasing heat today to see if this helps at all. Hate to dump the system as it was alot of money outlaid on our tight budget.
Peter
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