OKI Data is committed to high environmental standards at stages of a printing product’s life cycle - including design, manufacture and distribution of its products. We are constantly striving to design eco-friendly packaging and substitute materials for greener alternatives wherever possible.Compatible Printers: OKI C 841 N, OKI C 831 N, OKI C 831 DM, OKI C 831 CDTN, OKI C 841 CDTN, OKI C 841 DN, OKI C 831 DN, OKI C 831 Series