Mugi Yamamoto's diploma project is a compact inkjet printer, which is placed on top of a paper pile. When printing, “Stack” slowly moves downwards and swallows the pile until no paper is left. The paper disappears under the printer and exits on top, where it creates a new pile. Thanks to this new way of printing it is possible to remove the paper tray, the bulkiest element in common printers. This concept allows a very light appearance and avoids frequent reloading.