Document handling device provided with a number of rotatable hollow drums with suction openings

摘要: Suction openings in a rotating drum are alternately connected to or disconnected from the vacuum maintained inside drum, when this is necessary grip and transport document, release it, respectively. Activation of group suction effected by diaphragm valve, supported interior thereof, with associated pneumatic logical switching means operate valve. The have ports, high low feed levels, existing outside respectively, signal line, providing connection, insensitive rotation, an external, fixed source control signals for document transport. Other may be generated presence absence on drum. Various drums kind, opposite directions, disposed closely together form speed selective system.