Banding Issue

Warranties, repairs and maintenance
em555
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Re: Banding Issue

Post by em555 » Wed Mar 21, 2018 11:23 am

Morning Ryan, I've just been preparing to print a few banners this morning and again I've run into the exact same issue again as you will see in the photos below.

I've firstly ran the details bi-directional adjustment again (which seemed to be way off having only done this yesterday on the same material, with no other prints ran).

The vertical section again seems to be very poor quality with a red line appearing.
Any suggestions as this is really starting to impact the quality output.

Thanks in advance
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em555
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Posts: 24
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Re: Banding Issue

Post by em555 » Wed Mar 21, 2018 12:53 pm

I've ran another bi-directional adjustment and calibration which has helped the vertical issue, however the overall print quality again seems very poor and now I'm getting a lot of vertical banding.

I don't seem to be moving forward very much and more problem seems to be appearing.
The nozzle test appears to be fine.

I've a new cap top being delivered today / tomorrow and will have an engineer install. However is there anything else I should be looking at??

Thanks and apologies for the continuous posts.
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mrtn
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Re: Banding Issue

Post by mrtn » Wed Mar 21, 2018 4:49 pm

You have problems with your encoder. Dirty or damaged. Probably encoder sensor issues.
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em555
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Re: Banding Issue

Post by em555 » Wed Mar 21, 2018 7:41 pm

Thanks Mrtn. Would you advise an attempt to clean the encoder initially?

I appreciate all your help to date.

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mrtn
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Re: Banding Issue

Post by mrtn » Wed Mar 21, 2018 10:13 pm

Yes, brush the encoder strip gently. to get rid of loose dust. Don't rub it with anything unless you're certain it's dirty. It's really fragile and prone to finger prints and scratches.
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em555
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Re: Banding Issue

Post by em555 » Thu Mar 22, 2018 12:03 pm

The strip looked fine, however I give it a very gentle wipe just to be sure. This hasn't seem to change anything.

em555
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Re: Banding Issue

Post by em555 » Thu Mar 22, 2018 1:22 pm

I've been running prints in High Quality mode to get around these issues - overall the problems in this mode are minimal and the quality is great in comparison. The only issue I am having in high quality are the prints still seem a bit fuzzy / noisy.

The cap top should hopefully help this issue and I'll be able to report back today / tomorrow.

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mrtn
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Re: Banding Issue

Post by mrtn » Thu Mar 22, 2018 5:00 pm

Dropping head carriage speed might also have a positive effect.
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em555
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Re: Banding Issue

Post by em555 » Mon Mar 26, 2018 12:19 pm

Hi Mrtn, I've tried standard mode with the head speed reduced and still getting noticeable banding. I've also changed the capping station which hasn't seem to have helped.

Again, thanks for your help!

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mrtn
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Re: Banding Issue

Post by mrtn » Mon Mar 26, 2018 12:47 pm

Captop has no part in this at all unless your nozzles are stuck and cannot get them open.

This is the moment to call for service.
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