I just converted my Pixma 4820 to a B&W printer using Precision Color Inks. I get really good looking prints on HP Glossy paper. Those printed on Inkpress Rag are "flat" I'm wondering if this model printer just cant lay down the dyes properly on rag paper. I had an old Epson which I used Pigment inks for B& W and had great Rag prints, but banding on glossy paper. (This was called the Zone 8 Method) Any comments will be appreciated. .