My bet on a poor nozzle test.
There's a "test print" button on the side panel... once it prints you check for what looks like missing lines or lines printing on top of each other...
I keep scrap/end-of-roll material for all my tests n calibrations
sounds like what you did was a nozzle test...little lines are each nozzle - its shows missing/deflection
that wasnt my first thought, because the black line next to the green doesnt have the lines
that wasnt my first thought, because the black line next to the green doesnt have the lines