An ink-jet recording apparatus is provided, which makes it possible to perform borderless recording at a high speed. A platen 42 has a groove 116 which covers an entire ink discharge area of a recording head. A plurality of movable ribs 104 are provided in the groove 116. The movable ribs 104 are allowed to slide from first positions to second positions in synchronization with the transport of a recording paper 146. The first positions are positioned between mutually adjoining first fixed ribs 102, and the second positions are positioned between mutually adjoining second fixed ribs 103. The movable ribs 104 protrude upwardly from an upper surface 109 of the platen 42. The movable ribs 104 reliably support the recording paper fed to the position over the groove 116.