Patents Assigned to MAN Roland Druckmaschinen AG
  • Printing unit cylinder for a rotary printing machine
    Patent number: 6910415
    Abstract: A printing unit cylinder is subject to only low deformation in the event of operationally induced increases in the temperature of the printing unit. At least the barrel of the body of the printing unit cylinder is produced from a metallic material with a linear coefficient of expansion of ?<5×10?6K?1 in a temperature range of from about 20° to about 60°.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: June 28, 2005
    Assignee: MAN Roland Druckmaschinen AG
    Inventor: Klaus T. Reichel
  • Apparatus for cleaning rolls, cylinders and printing forms
    Publication number: 20050132913
    Abstract: An apparatus for cleaning and/or removing images from surfaces, in particular from roll or cylinder surfaces or printing forms is provided. The cleaning apparatus includes one or more blasting nozzles for discharging water in the form of crystalline ice particles or CO2 particles/pellets onto the surfaces to be cleaned. The discharging crystalline ice or CO2 particles effectively remove dirt particles or ink-carrying polymers from the surface to be cleaned. The dislodged material and the waste ice, which may have changed into water droplets, are removed from the surface and taken away.
    Type: Application
    Filed: December 17, 2004
    Publication date: June 23, 2005
    Applicant: MAN Roland Druckmaschinen AG
    Inventors: Josef Gottling, Dieter Schmid, Josef Schneider, Jurgen Schuster
  • Gumming medium
    Publication number: 20050133069
    Abstract: The invention provides a gumming medium for the treatment of printing plates comprising a buffer solution, a water-soluble polymer, a surfactant, and, optionally, a polyhydroxy compound. The invention further provides a printing process utilizing the medium, and a process utilizing the medium as a pretreatment composition for the temporary protection of fresh printing plates from soiling and from the influence of external factors.
    Type: Application
    Filed: December 10, 2004
    Publication date: June 23, 2005
    Applicant: MAN Roland Druckmaschinen AG
    Inventors: Thomas Hartmann, Herbert Langer, Michael Wagner
  • Rubber blanket plate for clamping onto a cylinder
    Publication number: 20050132911
    Abstract: The rubber-blanket plate comprising a carrier plate (2) on which functional layers (3) are arranged. The functional layers (3) include a covering layer (4), a woven-fabric layer (5) and a compressible layer (6). At the two ends of the rubber-blanket plate (FIG. 4a), only the ends of the covering layer (13) extend to the carrier plate (2), whereas the functional layers end before that. As a result, effective protection of the functional layers (3) is attained, and it is possible to use a relatively narrow channel (FIG. 4a) in the printing press cylinder upon which the rubber-blanket plate is mounted. Alternatively, all of the functional layers can extend to the end of the carrier plate.
    Type: Application
    Filed: December 10, 2004
    Publication date: June 23, 2005
    Applicant: MAN Roland Druckmaschinen AG
    Inventor: Thomas John
  • Plate cylinder of a printing press
    Patent number: 6901858
    Abstract: A plate cylinder of a printing press, with a tensioning channel which extends in the axial direction, in which means for fixing the plate ends of at least one printing plate which can be positioned on the plate cylinder are arranged. The leading plate end can be fixed by a holding element against a contact surface by means of a tensioning rail which can be moved in the tensioning channel. After that, and after the plate cylinder has been rotated, it is then possible to hook the trailing plate end on the extended tensioning rail. After that, it is possible to draw the tensioning rail back in again to tension the trailing plate end.
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: June 7, 2005
    Assignee: MAN Roland Druckmaschinen AG
    Inventor: Günter Koppelkamm
  • Apparatus for producing a sleeve-shaped printing form
    Patent number: 6899264
    Abstract: An apparatus for producing a sleeve-shaped printing form from a plate-shaped blank includes a circular shaping device for the blank, a welding system, by means of which the plate edges forming the start and end of the printing form can be cut to size, maintaining their dimensions, and welded, and a displaceable device for picking up and for transporting the blank to the circular shaping device. The displaceable device has a fixing frame which has two lifting elements which can be adjusted in accordance with the distance between the plate edges to be joined and can be set along the respective plate edge.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: May 31, 2005
    Assignee: MAN Roland Druckmaschinen AG
    Inventors: Alfons Grieser, Eduard Hoffmann, Lorenz Stotz, Johann Winterholler
  • Creating a mask for producing a printing plate
    Patent number: 6899814
    Abstract: In order to simplify the sequence of creating a mask, in particular for producing a printing plate, and at the same time to improve the quality of the printing plate produced by means of a mask, the use of laser-induced thermal transfer is provided. The structure information is applied directly to the surface of a printing plate carrier during the creation of a mask, by means of a thermal transfer film and a laser image-setting unit, so that by means of the structure information applied, differentiation with regard to image points and non-image points can be carried out directly in order to produce a printing plate.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: May 31, 2005
    Assignee: MAN Roland Druckmaschinen AG
    Inventors: Josef Schneider, Alfons Schuster, Michael Schönert, Rainer Stamme
  • Method and apparatus for preventing machine damage
    Patent number: 6899027
    Abstract: In a web-fed rotary printing machine having a plurality of cylinders rolling on one another, each cylinder is driven by a respective drive motor, and a control device synchronizes the motors to run at the same speed. The control device has stored therein a control program which can be activated in the event of a web break. The control program has an emergency stop ramp which brakes the motors to a standstill by jerked stop, preferably within five revolutions, the program driving the motors along the stop ramp in the event of a web break.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: May 31, 2005
    Assignee: MAN Roland Druckmaschinen AG
    Inventor: Robert Kersch
  • Positioning device for functional devices of printing presses
    Patent number: 6892636
    Abstract: A positioning device for functional devices of printing presses, having at least one guide unit and one drive for moving and positioning the functional device for throwing-on/throwing-off movements with regard to impression cylinders. Weight compensation means are provided for the vertical displacement, so that the drive can be at least partially relieved of the weight of the functional device.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: May 17, 2005
    Assignee: MAN Roland Druckmaschinen AG
    Inventor: Xaver Bachmeir
  • Combined printing press
    Publication number: 20050092196
    Abstract: In order to process inexpensive printing materials in connection with the processing of an extremely wide range of coating media, such as solvent-containing printing inks, and, moreover, in connection with variable format configuration and extremely flexible processing processes, provision is made to couple a web-fed rotary press and a sheet-fed rotary press to each other. For this purpose, a transfer assembly 7 in the form of a roll-sheet feeder is arranged between the presses.
    Type: Application
    Filed: October 21, 2004
    Publication date: May 5, 2005
    Applicant: MAN Roland Druckmaschinen AG
    Inventors: Jurgen Scholzig, Hans-Willy Schutz
  • Method of crosscutting a moving web
    Patent number: 6880439
    Abstract: A method of cross-cutting a moving web uses a cutting knife operably mounted on a knife cylinder having a circumferential distance LZ where LZ is smaller than a cut length, LA. The knife cylinder for revolving in a first and a second opposite direction is powered by a drive motor in either direction. The method includes revolving the knife cylinder in a first direction, cutting the web with the cutting knife, and completing a first cut. The knife cylinder is then reversed to retard progress in the first direction and then accelerated to the speed of the moving web until starting the second cut.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: April 19, 2005
    Assignee: MAN Roland Druckmaschinen AG
    Inventors: Robert Kersch, Wolfgang Zeller
  • Drying installation within a sheet-fed printing press
    Patent number: 6877251
    Abstract: A drying apparatus for a sheet-fed offset printing machine which dries sheets as they pass along a sheet path with forcefully directed air and/or heat. The drying apparatus of the present invention is adapted for more effective sheet drying by means of an electrode and a corresponding counter electrode, wherein the electrode is connected to a high-voltage source and a high voltage is applied to the electrode by the high-voltage source in dependence on the operation of the sheet-fed printing machine and/or the length of the sheets.
    Type: Grant
    Filed: June 12, 2001
    Date of Patent: April 12, 2005
    Assignee: MAN Roland Druckmaschinen AG
    Inventor: Andreas Ihme
  • Inking system for a printing machine
    Patent number: 6871590
    Abstract: An inking system for a printing machine which has a relatively simple design and which is adapted for more stable ink transfer to a plate cylinder. The inking system includes an ink supply roller (15), one or more drivable inking unit rollers (14, 19), an adjustment system for establishing a predetermined nip (19) between the ink supply roller and one of the drivable unit inking rollers (14, 19), and at least one movable calender roller (10) in constant contact with one of the drivable inking unit rollers operable for selectively interrupting the ink transfer.
    Type: Grant
    Filed: November 21, 2000
    Date of Patent: March 29, 2005
    Assignee: MAN Roland Druckmaschinen AG
    Inventors: Peter Hummel, Peter Schramm, Robert Ortner
  • Apparatus for setting the lateral register for printing units of rotary presses
    Patent number: 6862986
    Abstract: An apparatus for setting the lateral register of a printing unit of a rotary press that prints on a paper web includes a first bearing block configured as a locating bearing arranged on the drive side of a forme cylinder; and a second bearing block configured as a floating bearing on the operating side of the forme cylinder. A pressure medium operated operating cylinder displaces the first bearing block axially and presses it against an adjustable stop without play for the purpose of setting the lateral register. A controller controls the axial location of the adjustable stop in at least one of a closed-loop fashion and an open-loop fashion based on register deviations determined by a scanning optics unit.
    Type: Grant
    Filed: July 15, 2003
    Date of Patent: March 8, 2005
    Assignee: MAN Roland Druckmaschinen AG
    Inventors: Robert Kersch, Godber Petersen
  • Inking unit for rotary printing machine
    Patent number: 6862988
    Abstract: An inking unit for a rotary printing machine includes an ink fountain, a pivotable ink fountain holder in which the ink fountain is mounted, an ink ductor, and a pivotable ink ductor holder in which the ink ductor is mounted. The ink ductor holder and the ink fountain holder are connected by an operating cylinder so that ductor and the ink fountain can be pivoted jointly to a first position in which ink flows out of the ductor without flowing out of the fountain, and so that the ductor can be pivoted away from the first position to a second position while the ink fountain remains in the first position, thereby creating a gap between the ductor and the ink fountain.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: March 8, 2005
    Assignee: MAN Roland Druckmaschinen AG
    Inventors: Norbert Dylla, Günter Koppelkamm, Ulrich Geiger, Bernd Hennig
  • Form cylinder of a rotary printing press, in particular of an offset printing press
    Patent number: 6860200
    Abstract: A form cylinder is provided with a circumferential surface which is convexly curved in the axial direction, such that the convex profile, determined by calculation, of the circumferential surface varies in such a way that the diameter of the form cylinder is largest in the axial center and smallest at the lateral edges.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: March 1, 2005
    Assignee: MAN Roland Druckmaschinen AG
    Inventors: Peter Knauer, Klaus T. Reichel, Josef Singler
  • Blanket cylinder for offset presses
    Patent number: 6854389
    Abstract: A blanket cylinder has a rotational axis and a concave surface, concentric to the axis and extending over a printing width of the cylinder, for receiving a flat rubber blanket made of elastically deformable material. The cylinder has a recess concentric to the axis, extending over the printing width, and a film fitted in the recess The film has an outside surface which forms the concave surface of the blanket cylinder.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: February 15, 2005
    Assignee: MAN Roland Druckmaschinen AG
    Inventors: Martin Endisch, Peter Knauer
  • Short inking unit for a rotary printing machine and method of improving the ink splitting in such a short inking unit
    Patent number: 6851363
    Abstract: Inking unit rolls include at least one ink applicator roll, which rotates in an ink fountain filled with printing ink and picks up printing ink from the latter, and a plate cylinder, which serves as a printing plate carrier and onto which ink can be transferred, directly or indirectly, by the ink applicator roll. The short inking unit is therefore equipped with a small number of inking unit rolls and, at the same time, nevertheless ensures a uniform, homogeneous application of ink to the plate cylinder, that is to say the ink splitting on ink-carrying rolls of a short inking unit for a rotary printing machine is improved. At least one of the inking unit rolls is provided, at least on its surface, with a coating having powerful microdipoles, in particular made of ferroelectric material.
    Type: Grant
    Filed: May 22, 2002
    Date of Patent: February 8, 2005
    Assignee: MAN Roland Druckmaschinen AG
    Inventor: Josef Schneider
  • Drive for a cylinder of a rotary printing machine
    Patent number: 6846279
    Abstract: A cylinder of a rotary printing machine has cylinder parts that can be driven and rotated independently of one another. The cylinder parts each have a drive connection to an electric motor and can be driven independently of one another.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: January 25, 2005
    Assignee: MAN Roland Druckmaschinen AG
    Inventors: Andreas Stieler, Nils-Hendric Schall, Karsten Stansch, Ulrich Seyffert
  • Method of producing a variable format cylinder for a web-fed offset printing machine
    Publication number: 20040261641
    Abstract: Variable-format web-fed offset printing machine having printing-unit cylinders comprising core cylinders to which compressed air can be applied and onto which intermediate sleeves can be pushed axially and shrunk on radially. Each intermediate sleeve includes a carrier layer whose inner face rests on the core cylinder, a compressible intermediate layer, a transition layer, and a variable-thickness bridging layer, which ends with a covering layer to which a further surface like a printing plate or a rubber blanket can be fitted.
    Type: Application
    Filed: July 16, 2004
    Publication date: December 30, 2004
    Applicant: Man Roland Druckmaschinen AG
    Inventors: Peer Dilling, Horst Dauer, Martin Weinberger