This fairly typical of what one gets with consumer inkjets. Whether it's
due to black generation or other issues is a different question. One trick
to improve matters a bit is to use the driver controls to create less
"dense" prints, except of one really feels one needs 300% ink coverage etc.
Matters used to be much worse, but inkjet drivers have a improved a lot
over the past ten years.
Edmund
On Fri, May 8, 2020 at 7:06 AM Graeme Gill <graeme@xxxxxxxxxxxxx> wrote:
Alexey Gribunin wrote:
If you take a look on ti3 gamut, you will find strange spike at the deepshadows.
I made screenshots of (1430-2Step)
(B_1430_PC+IJMKp_Fnst-PLustr_PPSG_PRH_1792A2.ti3)
Yep - it's going to hard to have a smooth black with such
a transition in the devices behvior, while not clipping
the gamut at the dark end.
So the separation the printer is using (from RGB -> CMYK) is not
setup very well. You may have limited control over it,
but that's where to look.
VRML from ti3 file can be created directly with this simple string:
colverify.exe -v -W -x Measurements.ti3 Measurements.ti3
Spike is perfectly visible on 3D view.
Yes, it's pretty strange. The neutral axis seems to be
treated differently, resulting in the spike.
Cheers,
Graeme Gill.
