Notice, however, how many of these colors, including cyan, brown and magenta as well as pink, do not exist on the visible spectrum, yet we perceive them as distinct.

A typical six-colour ink set with light cyan and light magenta added to the basic CMYK set. However, if you want to print black-and-white photos, having only one black ink limits the range of tones ...

Cyan, magenta and yellow filters transmit two primary colours. Any other colour present in the light is absorbed. A cyan filter transmits blue light and green light. It absorbs red light.

Along with the standard cyan, magenta, yellow, and black inks, the iP8720 offers photo black and photo gray inks as well.