Head leaving streaks

[jus.hila]

Can anyone please help me out. When I raise the print head it doesn't appear but when the print head is set to low it seems to always make a mark. It only started doing this recently. It's normal gloss vinyl sticker. Did a full clean, changed dampers, wipers etc. I adjusted the vacuum. Seems to still appear.

 

[Gino]

Do you see in your photo how the media is pushing up ?? You probably have some tension on the media wrongly calibrated.

Make sure you have enough slack rolled off the back, so it doesn't create unnecessary stress. Perhaps heat settings could have some effect, but not usually like that.

 

[Adam Vreeke]

Your material is bubbling up and your head is striking the material. If I am reading your picture correctly, it looks like the last of the material is barely on the pinch roller, and in my experience can cause the material to bubble.