Rich Blacks not dense enough

[bbic]

Hi guys and Girls. New to the forum. Involved in printing for 20 odd years but dye sublimation is a whole new space for me.

Having some issues with color densities in darker colors, especially Black. Using Epson WF2510 Printer, what I believe to be good sublimation paper and Moori (Korean?) ink in a CISS refillable system.
Send to print on HD Resolution with setting on Epson Glossy paper

All sold here in Australia by a seemingly reputable supplier in MIR-AUS on eBay.

I understand dense / rich blacks (C100M100Y100K100) etc. Just not getting a black image I have seen on sample cups when doing the research on Mug printing.

I realise it could be anything from the Paper to the Mug Surface, just hoping someone has been through this part of the learning curve.

Thanks in advance

[Paul]

i presume you dont use ICC profile so your printer driver thinks it prints with standard epson inks. this way you wont get correct colors.
also you should print on inkjet matte as this is what sublimation paper is. not glossy.