The reading aid member 100 comprises a hard substrate 102 formed of resin such as acrylic resin, a thick paper, or a metal such as aluminum; and a scan guiding plate-like member 104 formed of resin such as acrylic resin, a thick paper, or a metal such as aluminum, which has the substantially the same shape as that of the hard substrate 102 and is overlaid on the hard substrate 102 fixedly with use