Could you tell me how to post a pdf? Call me blind but I can't seem to find where that is an option on this forum.
I have inserted an image of the document below.
When I print this, K3% does not show up and K5% is barely there as expected. Then when I copy using either black and white or colour settings, with background suppression OFF K15% is equivalent to K5% and K20% = K10% from the original. I tried darkening it from the machine but this has little effect on the lighter screens and makes the darker screens too dark.
So turning background suppression off does improve the quality, however I was hoping to get it closer to the original. I noticed on the specs sheet you linked to it says copy dpi is up to 600x600...is it possible to adjust the dpi for copying?