So when printing from my VJ-628 i notice there are very small black dots printed on white space where there shouldn't be any color at all and even over my image where there is color it seems there is little black dots? is this normal ? im using OEM ink and flexi sign and flexi rip the latest version. attached are some images its hard to notice but zoomed in you can see the dots in the white area and also over the colors in the other picture any help would be appreciated.