A desired pattern of elements, including an element having a slant side intersecting a recording track, is depicted on a resist layer on a disc-like substrate. The element is depicted by causing an electron beam whose beam diameter is smaller than the minimum width of the element to scan the resist layer so that the trajectory of the beam center of the electron beam on the resist layer draws a periodic waveform traveling along an axis parallel to the recording track. The periodic waveform is drawn from a starting point which is on a valley or a peak of the waveform. Angles θ3, θ1 and θ2 satisfy the relation θ1