To increase the accumulation number of media while preventing clogging of media.

Media Z put through a media input port 4 are rolled within a media processing passage 10 in the radial direction by dead weight, and information processing is performed thereto by a first antenna substrate 20. The media having value information left therein are returned to a media return port 5 through a medium return passage 11, and the used media are accumulated in a media accumulation means 25. The media Z supplied into a media supply passage 12 from the media accumulation means 25 are rolled in the radial direction by dead weight, and issued through the media return port 5 with assignment of value information thereto by a second antenna substrate 52. The media accumulation means 25 comprises rotators 28 and 29 intermittently driven by a motor 27 and having four medium accumulating recessed parts 35 and 39 each for accumulating the media Z.