Ernst, do you see any improvement on the Z3200ps printing with the PCL3 driver rather than the Postscript one?
The BW tests I did were made with the PCL3 driver. The curves linked to at that page show what the problems were.
I went back to using the Z3100 and the PCL3 driver for black and white in black and white mode.
The positive answers you got were from Z3100 users if Iīm correct.
Keith Cooper who also wrote a review of the Z3200 mentions this issue as wellhttp://www.northlight-images.co.uk/reviews...hp_z3200ps.html
If I had to solve this issue I would check whether it has something to do with a 1.8 Gamma in the Printerīs CM control where it should be a 2.2 Gamma or something like that. A correction curve in a custom printer filter of Qimage might do it. The clipping of Dmax as reported has to be tackled as well. It could have to do with installing the PS3 driver first and then the PCL3 driver. the first has extra 1.8 Gamma color spaces in driverīs CM choices. The last not. I reported the issue to HP and expected an answer. It is a long time ago and as written I like the Z3100 output so didnīt check whether it ever improved since.
met vriendelijke groeten, Ernst Dinkla