Roland Truevis VG2-640 - Banding issues

[JayDee]

Hi, were having issues with banding on our Roland VG2.
Problem exists in all solid colors and on different media types
See attachments:
- example
- gap adjustment checked
- calibration checked
- nozzle test checked

What else can we do to resolve this?
Any thoughts?

Thx in advance regards, Jovan

 

[wes70]

Here a few things we do when banding starts:
1. Clean encoder strip with isopropyl
2. See if there is static from your environment being too dry.
3. Adjust heat settings on the printer

 

[MrDav3C]

Looking at images you provided I would say it's a feed calibration issue.

It's currently set to +0.15, try changing it to -0.5 and see if that helps?

Also don't forget to agitate your ink cartridges regularly.

 

[JayDee]

thx, will try!

 

[JayDee]

wes70 heat settings up or low? I have no clue

 

[JayDee]

Looking at images you provided I would say it's a feed calibration issue.

It's currently set to +0.15, try changing it to -0.5 and see if that helps?

Also don't forget to agitate your ink cartridges regularly.

UPDATE: changed the feed calibration to -0.5 and even -1.0
Totally no difference in output :-(

 

[MrDav3C]

UPDATE: changed the feed calibration to -0.5 and even -1.0
Totally no difference in output :-(

OK so have just looked at the photos on my PC rather than on my phone as I'm now in the office. Looks a bit different than what I could see on my phone to be completely honest!

I would say the feed calibration setting was probably about right, apologies for the mis-information.

Have you tried cleaning the encoder strip?

For reference, heater settings should be somewhere around 40 degrees with the dryer being temp being a few degrees higher than the printer temp.

Would definitely recommend giving the ink pouches a good shake for around 30 seconds each & a couple of medium head cleans to see if that helps too.

 

[JayDee]

OK so have just looked at the photos on my PC rather than on my phone as I'm now in the office. Looks a bit different than what I could see on my phone to be completely honest!

I would say the feed calibration setting was probably about right, apologies for the mis-information.

Have you tried cleaning the encoder strip?

For reference, heater settings should be somewhere around 40 degrees with the dryer being temp being a few degrees higher than the printer temp.

Would definitely recommend giving the ink pouches a good shake for around 30 seconds each & a couple of medium head cleans to see if that helps too.

I will try cleaning the encoder strip. Where to find it?
Do I need to remove anything for this.
Default temp is set to 40 degrees celcius for the printbed and 45 for the last one.

 

[JayDee]

I will try cleaning the encoder strip. Where to find it?
Do I need to remove anything for this.
Default temp is set to 40 degrees celcius for the printbed and 45 for the last one.

Found and cleande the Encoder strip, no changes. Horizontal banding still the same.
Some more examples attached.

Anyone.....?