Fischer & Krecke Gmbh & Co.

Fischer & Krecke Gmbh & Co. Kg

Bobst Bielefeld Gmbh

Fisher & Krecke Gmbh & Co.

Fischer & Krecke

Andreas Kückelmann

Bodo Steinmeier

Gordon Whitelaw

Wilfried Kolbe

Wolfgang Brusdeilins

Klaus Schirrich

Georg Grautoff

Ron Shemesh

Ralf Mulch

Georg Grauthoff

A method of adjusting a roller () in a rotary printing press (), includes the steps of a) mounting the roller () in a preparation rack () so as to be rotatably supported therein, b) scanning the peripheral surface of the roller, thereby to detect a topography of the roller surface, c) deriving set data for the adjustment of the roller from the topography, and storing the set data, d) mounting the roller in the printing press (), and e) adjusting the roller in accordance with the set data.

Rotary printing press and method for adjusting a cylinder thereof

A method of exchanging printing units at a running rotary printing press, wherein a first printing unit is withdrawn from the printing medium, and a second printing unit for printing the same image with the same register is set against the printing medium, includes the steps of applying to the printing cylinder of the second printing unit, prior to start of the printing operation, a register printing block elevated relative to the regular printing block; prior to changeover of the printing units, setting the second printing unit against the printing medium such that register marks print with the register printing block without an image printing with the regular printing block; detecting register marks and adjusting the second printing unit register by reference to the detected register mark; and with the register adjusted, exchanging the printing units by withdrawing the first printing unit and setting the second printing unit.

Method of exchanging a printing unit at a running rotary printing press

A method for knocking-off a web () round on a turret winder () by a knocking-off device () includes a pressure roller (), in which the knocking-off device () and a coil () of the winder () are, through an abrupt relative movement, brought into a position in which the pressure roller () engages the periphery of the coil () and the abrupt movement is a pivotal movement (B) of the coil () about a pivotal axis that extends in parallel with the axes of rotation thereof.

Method for knocking off a web wound on a turret winder

A method for flexographic multi-color printing, wherein a print medium web is passed continuously through a flexographic printing press having at least two ink units, each ink unit including a printing cylinder, an anilox roller and an ink sup-ply system adapted to supply liquid ink of a specific color to the anilox roller, wherein the inks supplied in the different ink units differ in both, color and mass density, the method including the steps of mounting, in at least one of the ink units, an anilox roller having a larger diameter than the anilox roller of another one of the at least two ink units, and during printing, supplying the ink with the largest mass density to the anilox roller having the larger diameter.

Method for flexographic multi-color printing using anilox rollers having different diameters

A method for shifting a doctor blade in its longitudinal direction, the doctor blade being set against a cylinder of a printing machine, wherein the shift movement of the doctor blade is such that, for most of the time of the print operation, the shift velocity of the doctor blade is in a range from 0 to 0.1 m/s, and a printing machine having a doctor blade assembly, including a doctor blade arranged to be set against a cylinder, and a shift mechanism for shifting the doctor blade in its longitudinal direction, such that the shift mechanism is adapted to execute the method.

Method and apparatus for shifting a doctor blade

Printing machine having at least one impression cylinder (), characterised in that the impression cylinder () has a cylinder body () made of a material which, in circumferential direction of the impression cylinder () has a linear thermal expansion coefficient of less than 2&#xd7;10K. The material may be a composite material, for example, a material containing carbon fibers, in particular a synthetic resin reinforced with carbon fibers.

Printing machine including central impression cylinder

Printing machine with a machine frame () and at least two cylinders () which cooperate during printing, and which are mounted in a framing () formed by the machine frame (). The framing () includes a material which has, at least in a direction transverse to the axes of rotation on the cylinders (), a linear thermal expansion coefficient that is less than 2&#xd7;10K&#x2212;. The material can be a composite material, particularly a carbon fiber reinforced plastic.

Growing community of inventors

Ibbenbüren, Germany

Andreas Kückelmann