A cutter assembly for cutting printed media in a printer comprises a housing arranged for displacement across a media path, in a cutting direction at right angles to a media advance direction in the printer, a first rotary cutting blade carried on said housing such as to be positioned generally on the printed side of the media, and a second rotary cutting blade carried on said housing such as to be positioned generally on the side of the media opposite the printed side, the cutting blades being engageable with each other such as to cut the media between them, and the first rotary cutting blade being arranged upstream of the second rotary cutting blade in the media advance direction.