Abstract: A plate lockup for locking a plate on a rotary cylinder of a printing press in which a pair of deflectable springs carried by the rotary cylinder are deflectable by an actuator interposed between them. The actuator deflects one spring to facilitate lockup of a trailing end of a printing plate and then deflects the other spring to clamp a lead end of a printing plate against a lead end register carried by the printing press.

Abstract: An ink sealing assembly for a printing press in which ink is circulated from a reservoir into an ink chamber where it is retained under pressure in engagement with a rotating cylinder and in which the ink sealing assembly includes a pressure barrier communicating with the ink chamber, at least one ink seal spaced apart from the pressure barrier on the side remote from the ink chamber, said pressure barrier and ink seal being formed of relatively stiff but flexible, polymeric material with their sealing edges engaging the doctor blade and the cylinder and a return conduit connecting the space between the pressure barrier and the ink seal with the reservoir.

Abstract: Apparatus for threading a web through a printing press includes a single cable extending through the press along the web path on one side of the web. The leading edge of the web is connected to the cable by a leader, so that the web is pulled through the printing press when the cable is driven. The cable is supported by sheaves that are mounted coaxially with the lead rollers that guide the web through the press.