I believe it’s the media that is allowing it to happen. I run a Mimaki JV150 with ss21 inks and that doesn’t happen on my vinyl or banners but does happen on PET blockout. Have you had this happen on a bunch of different medias? I am highly considering the UCJV-300 for my next printer in a month or so.
Also, I tried the white inks in the Mimaki and was only able to get good results by doing overprinting and to keep the overprinting from having too much ink and bleeding, I had to run at 24 pass, unidirectional printing with standard speed. It is agonizingly slow and only a decent white on clear finish. It’s not worth it so I pulled it and switched to light black and orange to get better gamut. Looking forward to having a nice UV printer.
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