Hi- I also suddenly have this problem on 5x7 prints- it first occurred right when I switched back to 5x7 prints from 8x10's. I tried color, B&W, prints I printed just days ago without problem...now there is this dark 1/8" line along the right side for vert or on top for horiz prints. I updated the driver, realigned printer head, restarted all, and no difference. I also notice that the image is not centered and not quite the stated size for length, unless the left border is included. The line does not show in print preview and image appears centered until printed. So...is this some kind of alignment or border problem?. I don't know what to do next...thoughts, anyone?