Product optical control method.

摘要

A method of optically controlling products consisting, for example, of blanks (2), whereby a succession of blanks (2) fed along a conveyor (3) to a user machine is controlled by an analog sensor (27) for scanning the surface of each blank (2) along a given line (37), and developing a signal curve (28) as a function of the different graphic characteristics detected along the line (37); a comparing device (32) compares the signal curve (28) with a reference curve (31), and emits an error signal (S4) in the event the blanks (2) are not the right type and/or are not oriented and/or positioned correctly. <IMAGE>