Sheet processing machine and method for monitoring sheet travel

A sheet processing machine, in particular a sheet-fed printing press or sheet-fed die-cutting machine, having a sheet infeed system that has at least one leading edge stop (2) for the positioning and alignment of sheets (7, 8, 30) and a device for monitoring sheet travel along a sheet transport path of the sheet infeed system, said device comprising at least one measuring device (10, 17, 29) for detecting a lateral sheet edge (39) of the sheet (7, 8, 30) and at least one sensor (31), which can be assigned to the lateral region of the sheet transport path and which is configured to optically detect and ascertain the position of a mark (32) on the sheet (7, 8, 30), wherein the measuring device (10, 17, 29) and the sensor (31) are connected to an analysis unit (18), which analyzes the signals to determine the position of the lateral edge (39) of said sheet (7, 8, 30) and emits an actuating signal to an actuating element (19, 6).

A method for monitoring sheet travel along a sheet transport path in a sheet infeed system of a sheet processing machine, in particular a sheet-fed printing press or sheet-fed die-cutting machine, having a device comprising at least one measuring device (10, 17, 29) for detecting the lateral region (39) of the sheet (7, 8, 30), characterized by at least one sensor (31), which can be assigned to the lateral region of the sheet transport path and is configured to optically detect the lateral region of a sheet (7, 8, 30), wherein the measuring device (10, 17, 29) and the sensor (31) are connected to an analysis unit (18), which processes the measured values from the measuring device (10, 17, 29) and the sensor (31) in succession, wherein the analysis unit (18) emits an actuating signal to an actuating element (19, 6).