Medium suction support device and medium conveying device

A medium suction support device comprising:

• a medium support table having a medium support surface for supporting a recording medium, a plurality of through-holes being formed in the medium support table to pass through from the medium support surface to a back surface of the medium support table;
• a suction unit configured to suction the recording medium disposed on the medium support surface via the through-holes, the suction unit being disposed on a side of the back surface;
• a plurality of flexible tube members corresponding to the through-holes with one opening end of each of the flexible tube members surrounding a corresponding one of the through-holes on the back surface;
• and
• a sliding member having an opposing surface spaced apart from and facing the back surface of the medium support table, and configured to move in parallel along the back surface, the sliding member having a plurality of openings formed in the opposing surface with each of the openings being configured to respectively accommodate the other opening end of a corresponding one of the flexible tube members, the openings having different lengths in a parallel movement direction of the sliding member.