My preference is to print using their B&W printing mode, primarily because of the longevity of the prints. I also like the look that I have with the warm tone in the printer driver.
I am sending my B&W prints to the printer as RGB files, Adobe 1998 profile embedded.
Any thoughts on how I can get a linear response on this printer when using the driver's toning options?
Printing a neutral B&W print with HP's normal driver in color mode the black generation is delivering a 100% substitution of the composite greys with grey inks. The longevity will not be different to a neutral B&W print made with the driver's B&W mode and the HP driver's CM on. The last is the HP recommended setting for B&W mode so one should set the CM of the application to let driver control CM. The Z3200 B&W mode isn't linear in that case, whether freshly calibrated or not + with or without color toning. The Z3100 is linear on neutral B&W prints when calibrated. It will be less linear with color toning. In both cases, Z3100 and Z3200, one can use QTR profiling to get a perceptually correct tone range.
The banding may be a printhead issue. Try a head cleaning step first and if that doesn't work a head realignment. If that fails as well then a head exchange may be the best option. I usually print toned B&W through the color mode and do not see issues like that. The last banding issue was with color prints after the printer had been idle for some weeks. A head cleaning step solved it.
met vriendelijke groeten, Ernst Dinkla