To facilitate an inclination correction of a lenticular sheet.

When the lenticular sheet 3 is further carried after the forefront thereof comes into contact with a left receiving pin 58 of a clamper 25, the lenticular sheet 3 inclines toward the anti-clockwise direction to come into contact with the left receiving pin 58 and the right receiving pin 59, thereafter, clamped by the clamper 25. When the lenticular sheet 3 is carried in the sub-scan direction after clamped, an azimuth angle for adjusting is calculated based on the detection signals output from lens sensors 41-43. An inclination correction control section 99 rotates motors 71, 74 in the forward direction based on the azimuth angle for adjusting, in the state where the coupling between a left driving shaft 71a and a right driving shaft 74a is released, and rotates the left motor 71 faster than the right motor 74. Due to this rotation, the clamper 25 rotates clockwise. The inclination correction control section 99 rotates the clamper 25 clockwise until the azimuth angle for adjusting becomes zero, and thereafter stops the rotation of the motors 71, 74.