Canon ipf 8400 perpendicular soft banding

canon ipf 8400 creating a soft semi diagonal banding in dark mid tones ONLY when using the photo black (right head). Printer is calibrated, fine head adjustment done, nozzles check perfect. Printer settings are at maximum quality for prints. Problem started in the middle of a large print project while in use. Canon Technical support denies ever seeing this problem. The bands run perpendicular to the direction of head travel. Any one else figure this out or experience the problem? I have attached an example picture. Again the banding is perpendicular to the direction of head travel. Thanks.

 

Hello Seesee,

I´m having the same problem but on a Epson, what paper stock are you using?
Kind Regards
Cris

 

soft banding

Despite what Canon said that it was not the print head. In fact it was. I replaced the Photo Black ( right) head and the problem has been resolved. Unfortunately on the Epson printers this is not an economically feasible procedure, which is the reason I switched to Canon printers.
Good luck.