Heidelberger Druckmaschinen Ag

Kurt Lotsch

Bernd Ruf

Paul Nicola

Joachim Herrmann

Gunter Zobl

Gunter Andl

Hendrik Stemmler

Ralf Degner

Gabriele Vetter

Ulli Zeck

Wolfgang Kretz

Klaus Herzog

Kurt Sandmeier

Hans-Jurgan Kusch

A device to clean an outer cylindrical surface of a cylinder in a rotary printing press includes a cleaning cloth. The cleaning cloth can be pressed against the cylinder surface and is wound off a supply roller. To increase the effectiveness of the cleaning action, the cleaning cloth is wetted with a cleaning fluid upstream of the cylinder. The cleaning fluid can be fed via a feed tube to an absorbent wetting pad to uniformly distribute the cleaning fluid over the width of the cleaning cloth.

Device and method to clean cylinder surfaces in rotary printing presses

A format-variable feedboard with a sheet-bearing surface for a rotary printing press includes support members disposed so as to form a format-dependent, substantially closed bearing surface for at least one sheet, the substantially closed bearing surface being disposed in a given bearing plane.

Format-variable feedboard

Printing press having a device for centrally adjusting sheet-guiding elements located both on the drive and the control or operating sides of the printing press, the adjusting device including adjusting members for respectively driving the sheet-guiding elements in common, includes a drive member couplable selectively to the respective adjusting member on a respective one of the drive and the operating sides and to the adjusting members on both the drive and the operating sides.

Device for centrally adjusting sheet-guiding elements of a sheet-fed

Auxiliary device for assisting in singling or separating sheets in an upper region of a sheet pile provided for single-sheet transport in a sheet transport direction within a sheet processing machine, a respective top sheet of the sheet pile being removable therefrom at a given time by at least one singling or separating device including at least one sheet trailing edge blasting or blowing device for feeding the sheet to the sheet processing machine, includes at least one feeler rod disposed at a location transverse to the sheet transport direction for measuring the height of the sheet pile, and respective fanning or loosening blowers disposed laterally of the sheet pile upstream of the feeler rod, as viewed in the sheet transport direction.

Sheet-fanning device

Device for smear-free transport of sheets having fresh printing ink thereon on a revolvingly driven cylinder in a sheet-fed printing press includes air outlet openings for pressurized air provided on the circumference of the revolvingly driven cylinder in a sheet-bearing region thereof for bearing the sheet to be transported, and a fixed covering for closing the air outlet openings on the inside of the revolvingly driven cylinder prior to a takeover of the sheet to be transported by the revolvingly driven cylinder.

Device for smear-free sheet transport in an offset printing press

Shifting device for a turning gear transmission having an automatic change of transmission ratio when a change in direction of a driving shaft occurs, including two driving gearwheels disposed coaxially with respect to the driving shaft, the driving gearwheels being of different diameters and, respectively, being disconnectable from the driving shaft, and a driven shaft having two driven gearwheels firmly connected thereto and being in continuous pair-wise engagement with the driving gearwheels, further includes a pawl holder rotatably mounted on the driving shaft, the driving gearwheels being rotatably mounted on the pawl holder, at least one pair of pawls held by the pawl holder, and a device for causing the pair of pawls, contingent upon the respective direction of rotation of the driving shaft, to effect an entrainment of one of the driving gearwheels in a different direction of rotation.

Growing community of inventors

Wiesenbach, Germany

Kurt Lotsch