A printer includes a print head for printing on a print medium and a platen which supports the print medium, and is located opposite to the print head. The print head is linearly moved along the print medium. The platen includes first and second end portions and an intermediate portion, and is formed of material having stiffness. The first and second end portions are located at respective ends of the platen in the moving direction of the print head, and the intermediate portion is located between the first and second end portions. The first and second end portions are supported by respective spring members, such that they can be elastically displaced in a direction toward or away from the print head. The intermediate portion is formed to be more easily warped than the first and second end portions.