Konica Minolta magicolo 2430DL poor color print quality

b/w prints fine. Pages that have a lot of color (background color, photos, etc.) have horizontal AND vertial streaks. Horizontal streaks are light and spaced about 2 inches apart; vertical streaks are dark and are very close together. I’ve cleaned the lens and replaces all toner and the drum.

Any other suggestions?

We are a small theater company and rely on the printer to do in-house color printing of programs, marketing pieces, etc. Can’t afford to buy another. HELP!! Thanks