I am printing direct to photopolymer plate and get dark horizontal lines caused by slight overlap at 720dpi. They also happen on thin glossy paper taped to an old plate and testing indicates they go away at 1440dpi. Using 79-99-PiezoDN-Pos-Master in a 7900 with selenium K7. The paper thickness is set to heavyweight polyester and 32mil. Head alignment does not seem to be the problem.
Is there something I can do or should I just change resolution. I am somewhat invested in the lower print resolution.