PLATEN, AND IMAGE RECORDER

PROBLEM TO BE SOLVED: To provide structure capable of reducing the risk of staining, by ink, a reverse face of a medium to be recorded, even when carrying out repeatingly borderless printing onto the medium to be recorded, by an inkjet recording system.SOLUTION: This platen 42 is a platen for supporting a conveyed recording paper sheet. The platen 42 includes a plurality of first members 71 capable of letting ink delivered from an upper nozzle 39 land in an upper face, and arranged with spaces 73 along a lateral direction 9, a rear side member 83 and a front side member 84 provided on an upstream side and a downstream side of the first member 71, and capable of supporting the recording paper sheet, and first ribs 74 separated in right and left direction 9 from the first members 71 in at least one of the spaces 73, extended between the both members 83, 84 along a conveying direction, and projected up to an upper side of the upper face of the first member 71, to support the recording paper sheet.