Patent ID: 8342676

Claim:
A printing apparatus comprising: a printing medium support unit supporting a printing medium supplied to a print execution area and guiding the printing medium being transported, wherein the printing medium support unit includes: a support portion supporting the printing medium supplied to the print execution area and defining a predetermined gap with a print head; a suction groove formed concavely on a support surface of the support portion; a suction opening formed in the suction groove and communicating with a suction source; and a movable adsorption portion disposed in the suction groove and having a suction hole, wherein before the printing medium is supplied, the movable adsorption portion is located at an upper limit position higher than a support height of the support portion, and wherein when the printing medium is supplied, the suction hole is blocked by the printing medium, a space of negative pressure is formed on the basis of the suction source, and thus the movable adsorption portion is moved to a lower limit position equal to or lower than the support height of the support portion by the negative pressure.