An inspection method (2) is provided for inspecting a sheet in a press (1), wherein the press (1) comprises a punching unit (4) which is suitable for receiving a sheet (2) provided with a plurality of printed portions (3) arranged in a regular manner according to a printing pattern and for cutting the sheet in dwell steps thereof, separating into several steps a plurality of printed discs. The method comprises: - providing abutting means (22, 23, 24) arranged upstream of the punching unit (4) to receive the sheet (2) to be cut and adjust the position of the sheet (2), - advancing in a first direction (Dl) the thus adjusted sheet (2) to the punching unit (4) to obtain the plurality of printed discs; - processing at least one acquired image of the sheet (2) to detect an arrangement of the printing pattern in the sheet (2); - comparing the detected arrangement of the printing pattern with a nominal arrangement of the printing pattern to obtain a shift of the printing pattern in the sheet (2) with respect to said nominal arrangement; - acquiring at least one image of the sheet (2) upstream of the abutting means (22, 23, 24) during advancement of the sheet (2) in a second direction (D2). To detect said arrangement of the printing pattern the method further comprises: - identifying a top edge (2a), a bottom edge (2b) and a side working edge (2c) of the sheet (2) and further identifying a top graphic mark (20), which is arranged in a top corner (18) defined between the top edge (2a) and the side working edge (2c), and a bottom graphic mark (21) which is arranged in a bottom corner (19) between the side working edge (2c) and the bottom edge (2b); - calculating a longitudinal shift and a top side shift of the top graphic mark (20) and a bottom side shift of the bottom graphic mark (21); and wherein said adjusting the position of the sheet (2) in said abutting means (22, 23, 24) comprises translating and/or rotating said sheet (2) as a function of said longitudinal shift, and/or said top side shift and/or said bottom side shift to position said printing pattern in said nominal position so as to obtain in said punching unit (4) printed discs in which each printed portion (3) is arranged in a desired position.