High-speed mono printer and MFP that can print high quality printings in efficient and easy ways in middle and large sized offices. A ”split concept” that divides the User Interface area and the storage by form and color. The former is for printing engine and the latter for paper storage. To secure competitive edge by offering better products at reasonable prices and increasing productivity through the adoption of existing engine modules that work. Buttons on the control panel are intuitively designed to increase visibility for a better usability as they are aligned downward following operation order in a grouped way.