There is provided an image recording apparatus able to form images without fluctuation of image dot intervals in the main scan direction.The image recording apparatus comprises a light emitting source including multiple light emitting units emitting laser beams, and a detection unit for detecting the laser beams and measuring intervals of the laser beams in the main scan direction. Based on the measured intervals of the laser beams in the main scan direction, light emission timings of the light emitting units are adjusted so that the intervals between each two image dots on the photoconductor in the main scan direction are not influenced by the interval fluctuation of the laser emitting units.