Need Help Vertical banding

[Dan360]

Diffusers finally came in, put them in and not seeing any significant difference with the banding.

Advice on next steps? I'm still thinking it's something to do with the encoder.

 

[WYLDGFI]

Its not wet...just vertical tonal banding and relatively evenly spaced? Like a soft wave effect? Encoder strip then data/trailing Cable would be my next try at this...if those don't do it even the motor would need to be looked at..

 

[Dan360]

Yea it's like a wave effect but very evenly spaced, which almost makes me think it's something mechanical. The motor has been replaced since this started though.

I'll look into replacing the encoder strip and trailing cable.

Thanks

 

[jordo]

Hey Dan,

We are having the exact same issue that you were facing. Did you ever resolve it? Was it the encoder strip or trailing cable?

Thanks so much for any insight!

 

[jordo]

Yea it's like a wave effect but very evenly spaced, which almost makes me think it's something mechanical. The motor has been replaced since this started though.

I'll look into replacing the encoder strip and trailing cable.

Thanks

Hey Dan,

We are having the exact same issue that you were facing. Did you ever resolve it? Was it the encoder strip or trailing cable?

Thanks so much for any insight!

 

[Dan360]

I got it fixed but not sure what part it was. I had to do SMK3 on the printer and really cleaned everything while I had the printer apart. After I put it all back together, the problem went away.

I talked to my HP Tech and he wasn't sure either, might have just needed a really good cleaning.

 

[jordo]

Thanks for that Dan. I've neglected doing the SMK3, so I'm sure that probably is what I'm needing as well. Much appreciated.

 

[Peter Martins]

We have vertical banding in l28500.
I went nuts trying all sorts of stuff.

Then I noticed on a 2.3m wide print which was all black, that the banding was not across the whole width. The bit on the left hand side was good free of banding

The vacuum bed looked clean but I attacked it with various sharp pointy things. And cleaned out every hole vigorously

And it worked.

 

[jordo]

Ended up replacing my pinch rollers and replacing the motor that winds up the material and that seemed to do the trick.