Black and White printing
Six colour inkjet printers will utilise the colour inks to produce the grey tones, if the mixture of colours is not spot on then you could introduce a colour cast, generally this will be cyan or magenta. A good printer profile should ensure that you are going to produce a neutral grey tone, the profile instructs the printer driver on the correct mixture of colours. Our test print includes a large B/W image which has both deep shadow and highlight detail and plenty of light grey areas.
The XP-850 has produced near cast free monochrome prints, albeit with a very slight bias towards cyan. The print has plenty of detail in the deep shadow areas as well as in the highlight areas. For a printer which doesn’t have a set of dedicated Black/Grey inks it has produced remarkable results. Epson also has a range of large format printers (A3 and above) that uses the UltraChrom K3 inkset, these printers will produce the best monochrome prints.
The above grey steps and gradient displays the smooth transition from black to white, under the red dot you can just see the point where a slight cyan cast is being introduced, this is neutralised two steps to the left. The profile may not be 100% perfect, but it is not far out.
For colour prints any slight cast will not be noticeable. I have included the colour gradients to highlight this point and also demonstrate the smooth gradient transitions that this printer is capable of producing. This will also be due to the Micro Piezo head delivering a 1.5pl droplet size with variable droplet technology.