Discussion Is this vertical banding

[GetTarps]

This stays for a couple feet, then goes away. Please help!! Or could it be in the image?

All nozzles are clear!

 

[Christian @ 2CT Media]

It could be or it could be defects in the roll. Does it happen every time you start that print? If it does then you have to look at the consistents, Image or Printer. By Printer, it could simply be a delay in the RIP communication, down to a head issue with the initial warm-up.

 

[GetTarps]

Ok, Thank you!

Yes, we are having problems with the ethernet timing out. It takes 5 hours to print 720 4 pass 60 feet. Normal?

 

[GetTarps]

We bought Onyx 18.5 because of communication slowness and it's still the same. We connect direct to the printer

 

[Christian @ 2CT Media]

I'm not sure of speeds on the epsons but that seems slow.

As for ethernet connection, are you running a direct crossover cable with set IPs?

 

[ikarasu]

If your pc is plugged in directly to the printer you need a crossover cable. These are different than normal cables you buy for your pc - first thing I'd do is make sure you have the correct cable... The color order on each end will be in a different order than the other.

Is it every image or just that one? Rotate the image and see if the other end does the same. Try a different photo... Has this just started happening, or is it a new machine?

What steps have you done so far to diagnose the cause / fix the issue?

 

[Bly]

It looks like a defect in the media.
Have you tried another roll from a different batch?

 

[Jun Lanon]

Vertical banding on UV..... How old are those UV lamps? Try printing low speed and uni direction. This will rectify vertical banding. Change your UV lamps if it's old.

 

[Christian @ 2CT Media]

Vertical banding on UV..... How old are those UV lamps? Try printing low speed and uni direction. This will rectify vertical banding. Change your UV lamps if it's old.

Um it's not UV its an Epson Eco-Solvent

 

[OPENSignsInc.]

Is it being caused by a dirty pinch roller?

 

[SignMeUpGraphics]

Ok, Thank you!

Yes, we are having problems with the ethernet timing out. It takes 5 hours to print 720 4 pass 60 feet. Normal?

Not normal. S30670 should get close to 150sq.ft/hour @ 720x720 4 pass, so should only be ~2 hours to print.

 

[zspace]

No one's mentioned this and it's a long shot - check the encoder strip for dirt, ink and damage.

 

[RPM]

I second zspace. I'd check my encoder strip. Easy check and eliminate mechanical issues.

 

[GetTarps]

I second zspace. I'd check my encoder strip. Easy check and eliminate mechanical issues.

Thank you!!

 

[GetTarps]

It looks like a defect in the media.
Have you tried another roll from a different batch?

Yes...it happens on all rolls.

 

[GetTarps]

My encoder strip was pretty dirty and we cleaned it but how to check for damage?

 

[Solventinkjet]

My encoder strip was pretty dirty and we cleaned it but how to check for damage?

Basically if it's clean and still prints like that then you probably should just replace it. When encoders get really dirty it can damage the encoder lines but can be hard to see. Obvious signs of damage are any creases or physical cracks etc. But sometimes they can just be bad and you can't tell why. I'm willing to be if you change it, it will fix the issue.

 

[GetTarps]

It could be or it could be defects in the roll. Does it happen every time you start that print? If it does then you have to look at the consistents, Image or Printer. By Printer, it could simply be a delay in the RIP communication, down to a head issue with the initial warm-up.

Ok, we did a feed adjustment and changed the platten gap to 1.5. It worked! We are running 13 oz material.