Generally speaking, a visible perpendicular line down your runner after printing is an suggestion that the image barrel in the machine may be damaged. It could also mean that the machine is reaching the end of its life. An idea would be to check the runner count of the printer, or run a quick conservation check to make sure that the machine is n’t simply in need of aclean.However, also you may need to consider a new machine, If this does n’t break the issue.