Compared with HP5500 there are fewer HP Z6100 in the market. The Z6100 with its 8 color ink set has been a challenge for most ink manufacturers, so not many offer it. TULIP’s WP61 ink set specially designed for the HPZ6100 after extensive work, offers a very close color match with the OEM inks, and together with TULIP’s color profiles, this ink set, whether cartridges or bulk, is delivering the true promise of the TULIP brand, giving outstanding color and performance compared with other inks. The 8 color ink set includes Photo Black, Matt Black and Light Grey, enabling the printer to print superior grey scale images. However with some inks having inexact color match to OEM and weak or no profiling, the grey colors can turn our greenish or magenta toned, or yellowish. Grey colors are a tough test for inks and it is here that TULIP stands out from the competition. Backlit images are also a challenge, and the HP Z6100 printer is particularly strong in backlit printing. Once again TULIP’s WP61 ink set for this printer has proved it is superior in backlit printing, with best results obtained after color profiling.