I've got the Pixma Pro-200 purchased in July 2024. I use only genuine Canon inks. It's been printing flawlessly on all kinds of papers & sizes. Recently I bought some 11x14 heavy fine art paper from Red River (Palo Duro Etching 315 gsm, 18 mil). Since it's heavy paper, I put it through the manual feed tray. I made three beautiful, borderless, 11x14 prints. The fourth print suddenly produced this series of lines (see photo), parallel with the print head direction, at the back edge of the paper (last approx 1.5"). Now all the prints on that size and paper have those lines, sometimes faint, sometimes obvious, in the same place, no matter what image I print.
I printed on some lighter weight Canon letter sized matte paper through the manual feed, and there don't seem to be any obvious lines.
I've done the pattern print, and it does NOT indicate that the nozzles need to be cleaned.
Can anybody tell me what may have happened?
