Apparatus for imprinting an elongate strip of paper and forming transverse lines of weakening at spaced intervals along the strip.

摘要

The apparatus includes a printing roller (ll) and perforating roller (l3). A variator roller (l2) is adjustable to ensure that the perforations are provided at the desired location relative to printed matter on the continuous strip. A folding mechanism (Figure 7) comprises an oscillating feed member (l9) and spaced helical members (42) about which the printed and perforated strip is folded in zig-zag fashion, with the fold lines along the perforations. Creases are enhanced by beaters (4l) co-operating with the helical members. The members rotate to deposit the folded strip on a conveyor (l3). By rotating a handle (40) shafts (23A, 23B, Figure 4) are adjusted to vary the timing of operation of the folding mechanism to ensure synchronism with the perforating roller.