Heidelberger Druckmaschinen Ag

Goss International Americas, Inc.

Stephen Franklin

Wolfgang Sch&ouml;nberger

Martin John Callahan

Robert Richard Murray

Bertold Gr&uuml;tzmacher

An offset printing press includes a first plate cylinder, a first blanket cylinder for selectively contacting the first plate cylinder, an anilox inker for inking the first plate cylinder, and a first motor directly connected to the anilox inker for driving the anilox inker and connected to the first plate cylinder for driving the first plate cylinder. A second print couple has a second plate cylinder and a second blanket cylinder for selectively contacting the second plate cylinder. A second anilox inker inks the second plate cylinder and a second motor directly connected to the second anilox inker drives the second anilox inker and is connected to the second plate cylinder for driving the second plate cylinder. Blanket cylinders are either driven by their own third motor or via gear transmission from the first or second motors.

Shaftless motor drive for a printing press with an anilox inker

A printing press includes an inking unit provided with a screen roller having, on a circumference thereof, a pattern formed of depressions fillable with a printing medium, another roller co-operatively engageable with the screen roller, and a drive device, the screen roller and the other roller being drivingly coupled with one another so that, after each revolution of the screen roller, a pattern depicted by the printing medium on the other roller in a form of printing medium accumulations has a slight offset, in circumferential direction, with respect to a pattern depicted on the other roller during a preceding revolution of the screen roller, so that the new printing medium accumulations are positionable on the other roller in at least approximately printing-medium free gaps in, respectively, adjacent printing medium residual accumulations; and a method of operating the printing unit.

Printing press having an inking unit and method of operating an inking unit

An inking unit in a printing machine, having an ink reservoir, a dampening-solution reservoir, and conveying paths for conveying ink and dampening solution from the ink reservoir and the dampening-solution reservoir, respectively, to a web to be printed, and for conveying ink, that has emulsified with the dampening solution and that has not been picked up by the web, back to the ink reservoir, includes an ultrasonic transmitter installed so as excite an exposed dampening solution-carrying surface section of the inking unit.

Inking unit of a printing machine, and associated method

A variable-diameter cylindrically-shaped body includes a plurality of first tapered elements and a plurality of second tapered elements interacting with the first tapered elements and movable axially with respect to the first tapered elements. The first and second tapered elements define an outer surface of the body, with the outer surface having an effective diameter variable as a function of axial movement between the first and second tapered elements. The body has particular applicability in printing presses.

Variable-diameter cylindrically-shaped body

An inking unit for a printing machine, having a metering system for printing ink, and equipment for conveying ink on a conveyor path between the metering system and a plate cylinder of a printing machine, includes a vacuum chamber for evaporating a dampening-solution portion from the printing ink.

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Barrington, NH, United States of America

Stephen Franklin