Device for detecting unevenness of web substrate for printing machine, has sensor element with sensor head which is arranged adjacently or in contact with surface of web substrate provided in web path of printing machine

摘要

The device (1) has a sensor element (3) with a sensor head (10) which is arranged adjacently or in contact with a surface of a web substrate (2) provided in web path of a printing machine. A detecting device (6) has a light barrier is arranged such that a deflection of the sensor element moves a flap (11) in an area of the light barrier.