All  colors used in this printer are dye inks. 

Because of the way an inkjet printer works, a small quantity of color ink is still used during maintenance functions even if you print mainly text.
EV6_Inkset
EV6 CARTRIDGE FORMULATION
CYAN T079220 EV6-C
MAGENTA T079320 EV6-M
YELLOW T079420 EV6-Y
PHOTOBLACK T079120 EV6-K
LIGHT CYAN T079520 EV6-LC
LIGHT MAGENTA T079620 EV6-LM