White uv in not curing when lowering opacity

[CC-CMYK]

Hi! I’m trying to run an opacity test using white in from 50% to 5%. The ink stays wet from 30% and below. I can wipe it off with a rag.

Is there something that I need to do to cure the ink?

I’m running a Roland versa object with v-bond ink.

 

[chinaski]

I'd have similar issue on my Arizona when trying to reproduce a "frosted glass" effect. When using minimal white ink the adhesion was worse than using full white. I believe this is due to ink volume needing to be enough to allow ink crossbonding —More ink = more material to bind to. You might have to change every other variable you can think of to get it to work. (ie lamp settings, ink droplet size, primer, print passes and mode, etc)