The present invention provides a laser irradiation apparatus which can accurately control positions of beam spots of laser beams emitted from laser oscillators and the distance between the adjacent beam spots. The frame extends behind and below a convention grate holding a fire within the fireplace. The method and apparatus are particularly useful for recording a product to be printed, such as for manufacturing printing forms. The deformation reduction mechanisms of both groups may be mechanically linked to the contour-cutting element or they may pass over the line of the contour cut independently.