Abstract: The invention relates to an air exhaust device for printing machines, tin-plate printing machines, varnishing units or the like, in particular for the removal of ink mist, having at least one exhaust element arranged above the rolls of the printing machine, which exhaust element has at least one air exhaust opening. The exhaust element (16) is arranged laterally of the rolls (4) and the air exhaust opening (14) draws the air in in approximately horizontal direction.

Abstract: A printing-material conveyor between two printing units of a printing machine. The conveyor has a displaceable section displaceable to one position for enabling access to the first printing unit or displaceable to another position for receiving printing material from the first printing unit. A transport device includes the displaceable section which is followed by a stationary section. An endless conveyor with push members extends over both sections. The displaceable section being swingable. A cover plate swingable along with the displaceable section moves to block access to the displaceable section when the latter is displaced to enable access to the first printing unit.