** Easy operation** Operating the SP C830DN/SP C831DN is extremely straightforward, thanks to a 4.3-inch colour touch panel with a large display & animated menus. Touching the home button quickly returns you to the home screen. Further time-saving functions include auto job reset, cancel, & an option for high-volume printing. ** Office convenience** Create great-looking documents quickly & with minimal effort by using value-added finishing options such as a 2, 000-sheet booklet finisher, 3, 000-sheet finisher, punch unit & output jogger unit. Organise multiple jobs efficiently & enable users to effortlessly retrieve their documents by printing to the 4-bin mailbox. ** Extensive paper handling capabilities** The AficioSP C830DN/SP C831DN handle paper between 52 & 300 g/m² (from the bypass tray). The two standard trays each take 550 sheets, the bypass tray 100 sheets, & the two optional trays a further 3, 200 sheets, making a huge total capacity of 4, 400 sheets. Paper sizes include A3, A4, A5, B4, B5, foolscap, government, folio, quarto, legal & executive, ensuring that these devices meet all your printing needs. ** Innovative technologies** **ECO Night Sensor** The innovative ECO Night Sensor further reduces the already low electricity consumption of these devices. The SP C830DN/SP C831DN can be set so that the main power shuts down when the light levels in the room dip below a certain level. The sensor detects both the decline of natural & artificial light. You can set the sensor to activate between 1 & 120 minutes after darkness falls. ** Enhanced controller** Ease of use, time savings & increased productivity are ensured by the high-performance Ricoh GWNX controller, which means that you can configure device settings, monitor status, & create reports of usage. ** New fusing system** Enjoy ecological benefits & print quality improvements thanks to Ricohs Quick Start Up Direct Heating (QSU-DH) fusing syste