Terrible grayscale gradient at the dark black

[Neocortex]

Hello! I need some advice for calibrating/profiling my Kyocera M6026cdn printer. I've tried to profile it with my Spyder2 with multiple different targets, here are my results:

This is the test page file:
Stepchart_large_HSL.jpg

This is the printout without profile:

no_profile.jpg

And this is the best it could do after profiling
profiled.jpg


It has been improved a little bit, but still terrible. There are big pixelated pitch black clusters on the dark photos, any idea how could i fix this?

[subaro]

Re: Terrible grayscale gradient at the dark black

set the resolution to 600dpi, from the menus. You will have to play around with the menus to see which one as i have not done this is a long time. the default is 300. The difference is night and day.
Even the kyocera calibration test charts does almost nothing. You may have to set the paper tray to A4 if the results is NG.