Feeder for rotary printer has conveyor fitted with suction heads, height of each head above top of paper stack being controlled by sensor which detects reflection of light beam from stack

摘要

The feeder for a rotary printer has a conveyor fitted with suction heads (7, 8). The height of each head above the top (23) of the paper stack is controlled by a sensor which detects the reflection of a light beam (21, 22) from the stack.