{HEAD ~ A printing apparatus} is provided with {TAIL ~ multiple achromatic color inks} having different densities and at least one chromatic color ink 
is provided with
{ HEAD ~ A printing apparatus } is provided with { TAIL ~ multiple achromatic color inks } having different densities and at least one chromatic color ink
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH