Phaser 7700, blue prints purple etc.

[Morgan19]

Our Phaser 7700's color seems to be a bit off: it prints deep blue like purple, light blue like violet, yellow seems greenish, and printouts in general are much darker than they appear onscreen. (Granted that's somewhat understandable, but this seems extreme.) Is there some sort of color calibration I can use to "fix" these problems, or is it just how these colors print?

Thanks,
m19