I'm printing white orchids shot against a black background. The background in Photoshop is pure black: 0,0,0. Printing onto either HP ID Satin or Epson Premium Luster (or whatever they're calling it this week). Gloss Enhancer is Off.
The black is banding -- when you look at the print from an angle. Viewed straight on, it looks ok. From an angle, the entire black portion of the image is banded. There are no missing dots, all the black is there. Thus, I conclude no nozzles are blocked. But the banding is there.
Any suggestions are appreciated.