I am using Piezography 2 / PiezoDN, Selenium tone at 4880. The PhotoBlack ink of Y cartridge is now changed to HDPhotoBlack ink. After several steps, the inside of the tube became completely HD ink. Next I printed PiezoDN-129step-i1Pro1.tif file with x8-P2-PiezoDN-Master curve. But Dmax has fallen.
For example, in the normal PhotoBlack ink, Dmax = 3.6
For HD ink, Dmax = 2.47
Is this correct?