LEF 20 losing white ink

Warranties, repairs and maintenance
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garylyb
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LEF 20 losing white ink

Post by garylyb » Mon Jun 25, 2018 6:00 am

I have an LEF 20 about 2 years old.

If I do a normal clean I usually get a good test print on all heads.

Once the machine sits idle for a while, perhaps 2 hours or more, the test print loses white bars. If it sits overnight, no white at all will be printed.

I can get it back by running 1 or 2 normal cleans, or a medium clean, but it won't hold the charge for more than a few hours.

I have replaced the head caps on all 3 heads and replaced the damper on the white, but the problem persists.

Any suggestions?

Thanks,

Gary

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Kai Perry
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Re: LEF 20 losing white ink

Post by Kai Perry » Mon Jun 25, 2018 9:21 am

Is the machine capping correctly?, it sounds like the head is being left uncapped.
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garylyb
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Re: LEF 20 losing white ink

Post by garylyb » Mon Jun 25, 2018 3:10 pm

brent3.jpg
Here's a couple of pics.

The cap this morning, there was no ink around it last night.

And the white/gloss head this morning after printing something.
brent2.jpg

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mrtn
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Re: LEF 20 losing white ink

Post by mrtn » Mon Jun 25, 2018 3:55 pm

Your cap is a bit off center.
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garylyb
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Re: LEF 20 losing white ink

Post by garylyb » Mon Jun 25, 2018 4:41 pm

I just checked the cap and it would not go down smoothly. I reseated it and it's smooth now, I'll know in a few hours if that's what it was.

garylyb
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Re: LEF 20 losing white ink

Post by garylyb » Mon Jun 25, 2018 8:30 pm

Well, that didn’t make a difference. I let it sit for about 3 hours, and on the test print half of the white bars were gone.

I checked the cap, and it moves smoothly. I’m really getting frustrated.

What could be going on?

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mrtn
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Re: LEF 20 losing white ink

Post by mrtn » Mon Jun 25, 2018 10:21 pm

Is the cap original? Chinese knockoffs seem to be DOA quite frequently.
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garylyb
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Re: LEF 20 losing white ink

Post by garylyb » Mon Jun 25, 2018 10:39 pm

I bought it from my local Roland dealer. I also get ink and substrates from them.

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