Abstract: In a rotary printing machine, a pressure roller is mounted on a slide that is reciprocally and linearly moved along two mutually orthogonal directions in order to change impression cylinders.

Abstract: In a printing machine, an arrangement for adjusting web register includes a frame detachably mounted on the machine, and a pair of guide rollers over which a web is guided. A downstream roller is raised and lowered, and both rollers, as well as a pair of frame members, are turned as a unitary assembly relative to the machine.

Abstract: An imprinter, particularly for use downstream of a flexographic printing machine, wherein the stubs at the ends of the counterpressure roller which forms part of the web guiding system are suspended on levers. The levers are pivotable about a horizontal axis defined by a pivot member on one or more carriages which are movable in the frame up and down to move the counterpressure cylinder nearer to or further away from two printing cylinders. The printing cylinders flank the counterpressure cylinder and their stubs are removably installed in open-sided sockets which are provided therefor in the sidewalls of the frame. Each printing cylinder receives ink from a discrete source.

Abstract: An instantaneous adjustment device for a doctoring blade assembly operatively linked to a cylinder in a printing press is provided which includes, interposed to the piston rod of a cylinder-piston unit actuated by compressed air and the oscillating holder assembly accommodating the doctoring blade, a mechanical means, such as a spring for storing up a force, and/or a means effective to periodically transfer an impact force to the doctoring blade oscillating holder.

Abstract: A device for shifting a compensator roller in a printing press, comprising an actuator assembly which may be controlled for either high speed or low speed movement of the compensator roller.