Laminating resin compositions of the invention enable excellent productivity in the lamination processes, and are free from deterioration in optical characteristics such as transparency or surface properties inherent to resins such as polypropylenes. At a plurality of points of the spine axis, maximum and minimum scores are computed by summing curvatures of the intensity curvature map and by summing directional intensity gradients along line segments to determine if an endplate passes through the points. The ramp-up adjustment data and real transmission data are supplied from a baseband LSI.