Operating System: Microsoft Windows 10 (64-bit)
While printing long job material becomes crumpled under the rollers. Material - syntetic canvas (230-260 g/m2), 1.52 m width. Not at the start but may be at the roll half. And somewhere at the width center. Bumps appear on the material and then printing head begins th scratch it. Only stopping print and lifting rollers helps to align material(. Changing vacuum, temperature and so on doesn't affect anything. And this problem also exists with Latex 360. Is this HP's defect?
From your description and the pictures attached I suggest you to perform the following steps:
If the issue persists you should contact the media vendor.
I hope this information helps
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