The Epson NX400 is a mid-range, photo-centric inkjet all-in-one machine with copy, print, and scan functionality.  Print speeds are fast, ranging up to 34 pages per minute, and colour resolution is high, ranging up to 5760x1440 dpi.  The flatbed platen is letter-size and has a hardware scan resolution of 1200x2400 dpi.  The scanning features uses a scan bit-depth of 48 bits.  The copy feature is both colour and black-and-white, and allows for reduction and enlargement of between 25 and 400%.  PC-free photo printing is an option, using PictBridge-compatible USB devices and flash-memory cards.  The NX400 includes the ability to correct the lighting in poor-exposure photos, and also supports face-recognition technology and faded-colour restoration.  Printing utilizes a four-cartridge system, with one black and three individual colour cartridges.  High-capacity cartridges are also available.