To provide an image recorder which can easily adjust a beam focus position and a beam pitch.

The image recorder with a light source means for irradiating beams from each of a plurality of continuously set light sources, an imaging lens part arranged in an optical path of the beams, and a moving means for moving the imaging lens part forms images by illuminating a photosensitive recording medium with the beams from the light source means via the imaging lens part. The image recorder is provided with a beam measuring means for measuring a shape of beams to be formed on the recording medium. The moving means is controlled to drive on the basis of the measured result of the beam measuring means to adjust the position of the imaging lens part so that a desired beam shape is obtained.