Genuine OEM OKI C531dn Toners

On the C531dn, the image drum serves black and all three colors as one assembly, while toner is supplied separately. That means an all-color drum order and a toner order address different needs; the drum doesn't refill your printer's toner.

Toner Buzz offers genuine OKI individual toner in two capacities, a four-color toner set and the separate all-color drum. The larger cartridges give frequent users more pages between changes, while the set brings together the smaller black, cyan, magenta and yellow cartridges.