US Patent 8723904 Mobile printer with optional battery accessory

A mobile printer comprising a printer body and a printer door is provided. The printer body has a recessed area that is sized to receive a media roll. The media roll has a void interior portion that is sized to receive one or more batteries that provide power to the mobile printer. Further, the printer door is operatively coupled to the printer body. When in an open position, the printer door allows for placement of a media roll from a side of the mobile printer into the recessed area. When closed, however, the media roll is retained in place relative to the printer body and the media from the media roll is captured for printing.