The ENERGY STAR Office Equipment program distinguishes “digital copier-based MFDs,” which are covered by their MFD program, from printer- and fax-based MFDs, which are covered by their printer program. In this study, we identify any multi-function device as an MFD, and distinguish between them on the basis of imaging technology (inkjet or laser), which we think is most relevant to power consumption. Many units of office equipment that we identified in the field as copiers, fax machines,.
