Need Help Roland issue?

Why would you wipe down your media and what are you wiping it with?

 

Looks like contamination of some liquid or moist condition. It could very easily be in the ink cartridge itself..... or maybe with what you're using to wipe it with, but it looks to symmetrical for something done by hand.

 

Looks more like a media contamination issue to me. I've had bad rolls from various vendors. 30 yards in, have full on hand prints. Dust/debris. Even Doritos crumbs. It all leads to odd fish eyes similar to what your seeing. All the vendors were clad to replace rolls, after a few email with forensic photos...

 

It definitely looks like some sort of liquid is contaminating the vinyl. Since it happens on multiple vinyls I am assuming it's coming from the printer itself. Check your pinch rollers to make sure there isn't some sort of grease on there. The first image looks like it might be related to the pinch roller. Other than that, sometimes grease will fall from the rail as the head moves back and forth which would cause this type of pattern.

 

So, you unroll material that is manufactured in a mostly sterile environment and rolled tightly by a machine in the factory and shipped in both a plastic bag and a box in order to wipe it down with something in your shop that could absorb some kind of contaminate?

Do you roll it out on a table or something before wiping?

We store our media upright on the plastic end caps its shipped in after slipping the plastic bag it came in back over it and we use white, cotton lab gloves to handle the rolls while loading.

 

I had to help a shop with a similar situation. After a bunch of phone consulting I finally went onsite and found that they had an overhead air vent blowing directly on the back side of their printer. It was constantly blowing contamination on the supply side of the printer which, of course, caused fish eyes like this. A good duct cleaning and new furnace filter later, the problem was solved. They eventually moved the printer so that it wasn't in the line of fire, so to speak.

 

Ahhh.......... your neighbor is out grilling and the minute grease popping off the ribs is becoming airborne and landing on your vinyl. Yep, that's the ticket. Smells good, though..............

 

For me, it looks like contaminated vinyl !! What Joe House says also has logical

 

I have had the same issue recently, It is the black print on the back of the paper liner that says what the vinyl is. In my case It is Avery clear laminate, I,m printing in reverse and get the same look as your photo on the printed face and I realised it lined up with the print on the liner.