I posted this to the Facebook "Vintage Film Shooters" group, but thought it could also go here. This is with 8 year old Instax wide film. The pattern of white bars seems to not depend on the film pack, as it had a similar pattern with the last (and only by the time I got it) shot from the previous pack. It looks like bad rollers. As far as I can tell, they have a black coating on them that might have worn off on spots. Unless they aren't supposed to have a black coating on them.