PURPOSE: To obtain such a recording medium which is not locally applied with undue stresses by controlling the sectional shape, camber direction and camber quantity in the central part of the sticking surfaces of substrates, the composite stress and direction of laminated films, etc.

CONSTITUTION: The sectional shapes of the sticking surfaces of the transparent groove substrate 1 molded of polycarbonate and the similar transparent flat substrate 2 are formed to the shape at the sticking surfaces which is recessed in the central part than recording regions, by which the camber direction and camber quantity of the sticking surfaces are controlled. The synthetic force and direction of the dielectric film, magneto-optical recording film, dielectric film, reflecting film, etc., of the substrate 1 are so controlled as not to affect the camber direction of the substrate 1. The substrates 2 having the dielectric films 8 and 1 are adhered via a UV adhesive resin 9 in a vacuum and since there are on fulcra, etc., to invert the camber, the local application of the undue stresses on the substrates of the disk 3 formed by the adhesion does not arise. There is, therefore, no generation of the abnormality in double refractions and the degradation in the error rate is prevented; in addition, the bumping accuracy and durability are enhanced.