Double sheet control for rotary printer - with measuring head coupled via pushbutton to pulse controlled blocking device for control of laying out

摘要

The double sheet control uses a measuring head (3) in the vicinity of the single sheets where these are gripped by the retaining edge (2) of the laying-out table (1). The measuring head is coupled with a blocking device for blocking the operation of the clock-controlled laying-out control. The measuring head is also coupled to a display indicating the occurrence of two overlaying sheets, the display, and the double sheet control operating without clock pulses. The output of the measuring head is pref. coupled via a push-button with an AND gate also coupled to a pulse former, its output connected to the blocking device for the laying-out control.