I am using the HP 8750 photosmart 13x19 printer. I have noticed vertical banding streak lines when using glossy (HP, Kirkland, Epson). The inks is new and this happens whether I use oem or alternative inks. Because I see the bands on different manufacturers glossy paper I tend to believe it is the unit somehow (not the papers). I have checked and cleaned the nozzle which prints ok on the test print, but on my portraits is see "BANDING".
I kinda remember seeing a small wedge like device being sold on the web which is supposed alleviate this issue with printers, but I cannot remember its name. Does anyone know of the same or a similar solution or any other solution to this problem? This unit is hardly used, but it is out of warranty, so that is not an option. And I really like the way it prints when it works, so I am trying to resolve this issue. Again I only see the problem on glossy coated paper.
Dave