span

Hi there hope some one can help we have a roland vs 640 and seem to be having some problems with the metalic silver when we print an image it kind of smears off the intended image almost like over spay and today it started doing it with the black but it seems to be a magenta over spay and allway seems to be to the left hand side of the image.i have calibrated and the test prints are ok as i print mx graphics they need to good and when printing a number board with black outer and white numbers we ended up with like a magenta over spay on the white number does any one know what might be causing this to happen.