Fischer & Krecke Gmbh & Co.

Fischer & Krecke

Fischem & Krecke Gmbh & Co.

Fisher & Krecke Gmbh & Co.

Bodo Steinmeier

Klaus Schirrich

Wilfried Kolbe

Manfred Terstegen

Andreas Kückelmann

Christoph Hars

Wolfgang Brusdeilins

Wilfried Tappe

Gordon Whitelaw

Lars Gr&uuml;ter

Ron Shemesh

Ottomar Tessmann

Ralf Mulch

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.

Printing machine

A method of manufacturing an anilox roller, in particular for a flexographic printing press, the anilox roller comprising a cylindrical core and a sleeve detachably held on the core and having at its surface an anilox layer with a grid pattern of pits, including the steps of mounting the sleeve on the core, and then forming the anilox layer on the sleeve.

Method of manufacturing an anilox roller for a flexographic printing press

An engraved ink transfer cylinder for a flexographic printing press, wherein the roller body ( ) is clamped detachably on a continuous axle ( ) and surrounds this axle ( ) at a distance.

Engraved transfer cylinder for a flexographic printing press

A flexographic printing press with a back-pressure cylinder ( ) and at least one inking unit ( ), which has an exchangeable printing cylinder ( ), which can be placed against the back-pressure cylinder ( ), an engraved ink transfer cylinder ( ), which can be placed against the printing cylinder and a chamber doctor blade ( ), which can be placed against engraved ink transfer cylinder, wherein a washing cylinder ( ) is constructed to be inserted in the inking unit ( ) instead of the printing cylinder ( ) and to apply cleaning liquid to the surface of the back-pressure cylinder ( ).

Flexographic printing press with device for washing the back-pressure cylinder

Method of exchanging a printing cylinder sleeve and printing machine for carrying out the method

A printing cylinder with a cylinder core ( ), on which a carbon fiber-containing casing ( ) is disposed, wherein the casing ( ) is self-supporting and held at a distance from the peripheral surface ( ) of the cylinder core ( ) by disks ( ) disposed at the two ends.

Printing cylinder

A printing machine with a cylinder sleeve (,), which can be rotationally driven and is supported at both ends with protruding axle journals (,) directly in the machine frame (,), and with a shaft (,), which passes through the cylinder sleeve and can be driven along with it, such that the rotational driving takes place over the shaft (,) and the cylinder sleeve (,) can be set axially against a torque transfer element (,), which is seated on the shaft.

A drive clutch for connecting a drive shaft (,) with an exchangeable cylinder (,) of a printing machine, such that, at one end of the cylinder (,), a locking part (,) is provided and that, in or on the drive shaft, a spanner (,) is disposed, which has a recess (,), which opens up radially and into which the locking part (,) can be introduced positively, and that the spanner (,) can be retracted axially, in order to pull the cylinder (,) with the help of the locking part (,) against the end of the drive shaft (,).

Drive clutch for a pressure cylinder

Apparatus for detecting collisions in a printing machine having at least one rotationally driveable rotary body (,) and an actuator (,) for adjusting the rotary body in a direction normal to the axis of rotation, the apparatus including a torque sensor (T) and/or an angle increment sensor (&OHgr;) for detecting the driving torque and/or the rotary speed of the rotary body (,), and a control unit (,) adapted to detect a collision of the rotary body with another component member on the basis of the signal of the torque or angle increment sensor and to stop the actuator (,) thereupon.

Method and apparatus for detecting collisions in printing machines

A printing machine with preferably several inking units, which are disposed on a common back-pressure cylinder (12), with in each case at least one roll body (16, 18), which is held with its two opposite ends in two bearing blocks (22, 24) that can be moved approximately radially with respect to the back-pressure cylinder, and is held with its one end in a hinged bearing (42), fastened to the bearing block (22) there, while it is clamped with its other end in a cantilever manner in a holding device (26), it being possible to move the holding device and the hinged bearing in such a manner relative to one another that, after the hinged bearing is lifted up, the roll body can be moved out of this bearing and then removed in an axial direction, characterized in that the hinged bearing (42), in the lifted-up state, is open in the direction of movement of the associated bearing block (22) and, by moving this bearing block in the direction approximately radial to the back-pressure cylinder (12), can be moved into the position, which permits the axial removal of the roll body (16, 18).

Method of printing in printing machine with movable bearings blocks to

A printing machine with preferably several inking units, which are disposed on a common back-pressure cylinder (12), with in each case at least one roll body (16, 18), which is held with its two opposite ends in two bearing blocks (22, 24) that can be moved approximately radially with respect to the back-pressure cylinder, and is held with its one end in a hinged bearing (42), fastened to the bearing block (22) there, while it is clamped with its other end in a cantilever manner in a holding device (26), it being possible to move the holding device and the hinged bearing in such a manner relative to one another that, after the hinged bearing is lifted up, the roll body can be moved out of this bearing and then removed in an axial direction, characterized in that the hinged bearing (42), in the lifted-up state, is open in the direction of movement of the associated bearing block (22) and, by moving this bearing block in the direction approximately radial to the back-pressure cylinder (12), can be moved into the position, which permits the axial removal of the roll-body (16, 18).

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Bielefeld, Germany

Bodo Steinmeier