Patents Assigned to Maschinenfabrik Wifag
  • Patent number: 7610853
    Abstract: An inking roller for an inking system has, distributed over the surface on a ink-transferring surface (S), circumferential flutes (3). The longitudinal flutes (4) intersect the circumferential flutes (3) and elevated surface areas as said webs (5) and between the circumferential and longitudinal flutes (3, 4).
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: November 3, 2009
    Assignee: Maschinenfabrik WIFAG
    Inventor: Beat Luginbühl
  • Patent number: 7478592
    Abstract: A clamping device for clamping a flexible packing (2, 3) of a cylinder (1) of a printing press, which cylinder has an axial channel (6) on a jacket surface, the clamping device includes a clamping body (10), which has a surface (S) that forms in the channel (6) with an opposite surface (4) a clamping gap for at least one end of the packing (2, 3) protruding through an opening (7) of the channel (6). A pressing device (13; 14; 10a) presses the clamping body (10) and the opposite surface (4) against each other with a clamping force (F). A mounting device (12; 14; 1, 8), which forms a support surface (9; 14?; 9?), touches the clamping body (10) and the clamping body (10) is supported on it.
    Type: Grant
    Filed: September 24, 2003
    Date of Patent: January 20, 2009
    Assignee: Maschinenfabrik WIFAG
    Inventors: Andreas Zahnd, André Kolzem
  • Patent number: 7162954
    Abstract: A process is disclosed for determining cutting positions of web strands (B1, B2), which are brought together into a strand to be bound (H1) in a rotary printing press and cross-cut. A measured value for the cutting position of the web strands (B1, B2) is formed in the strand to be bound (H1) and one individual strand measured value for the cutting positions of the web strands (B1, B2) is recorded for each of the web strands (B1, B2) before bringing together. The cutting positions of the web strands (B1, B2) are determined from the individual strand measured values and the common measured value recorded for the web strands (B1, B2) of the strand to be bound (H1) in the strand to be bound (H1).
    Type: Grant
    Filed: August 1, 2000
    Date of Patent: January 16, 2007
    Assignee: Maschinenfabrik Wifag
    Inventors: Andreas Helfenstein, Reinhold Güth
  • Patent number: 7059559
    Abstract: A device for supporting a web with a holding device (5), a first spring element (14), which generates a first spring force directed roughly against the force caused by the load in case of a loading of the holding device (5) and with a second spring element (16), which generates a second spring force acting roughly in the direction of the force caused by the loading of the holding device (5).
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: June 13, 2006
    Assignee: Maschinenfabrik WIFAG
    Inventor: Hans Furrer
  • Patent number: 7051652
    Abstract: A wet offset printing form has atop layer containing a photocatalytically and thermally modifiable material. The material can be brought photocatalytically into a hydrophilic state by irradiation with light and into a lipophilic state by heating. The hydrophilic state forms a surface that can be illustrated and the lipophilic state forms an illustrated surface. The top layer of the wet offset printing form may contain absorption centers for irradiation, especially for laser radiation in the NIR range, with which heating of the top layer in the pattern of an image is brought about.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: May 30, 2006
    Assignee: Maschinenfabrik WIFAG
    Inventors: Matthias Riepenhoff, Olivier Stehlin
  • Patent number: 7000544
    Abstract: A process is provided for measuring the inking in web printing, wherein a measuring head or a plurality of measuring heads performs/perform an integrating measurement of the light remitted from a printed web of material in the direction of run of the web of material. A device is also provided for measuring the inking in web printing. The device includes at least one sensor element for receiving light, which is remitted by a running, printed web of material, an adding or integrating device, which is connected to a sensor element, of which there is at least one, in order to determine the intensity of the light received and a control, which presets the duration of reception of light and/or the duration of the addition or integration by means of the adding or integrating means for an adding or integrating intensity measurement of the remitted light in the direction of run of the web.
    Type: Grant
    Filed: July 1, 2002
    Date of Patent: February 21, 2006
    Assignee: Maschinenfabrik WIFAG
    Inventor: Matthias Riepenhoff
  • Patent number: 6976428
    Abstract: A wet offset printing form has a top layer containing a photocatalytically and thermally modifiable material. The material can be brought photocatalytically into a hydrophilic state by irradiation with light and into a lipophilic state by heating. The hydrophilic state forms a surface that can be illustrated and the lipophilic state forms an illustrated surface. The top layer of the wet offset printing form may contain absorption centers for irradiation, especially for laser radiation in the NIR range, with which heating of the top layer in the pattern of an image is brought about.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: December 20, 2005
    Assignee: Maschinenfabrik WIFAG
    Inventors: Matthias Riepenhoff, Olivier Stehlin
  • Patent number: 6966475
    Abstract: A draw roller for pulling web-shaped material with at least one pull ring arranged on at least one part of the circumference of the roller. The at least one pull ring can be displaced on the draw roller.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: November 22, 2005
    Assignee: Maschinenfabrik WIFAG
    Inventors: Hans Zweifel, Thomas Treuthard
  • Patent number: 6955122
    Abstract: A process and device are provided for setting the crop mark for and/or in a print production, in which prints are continuously printed on a web. At least one printing couple for printing on a web is provided. A lengthwise cutting device cuts the web into a first web strand and at least one second web strand. A converging device is provided for converging the first web strand with at least the second web strand and/or at least one other web strand to form a bundle. A cross-cutting device cuts the bundle. A crop mark setting device is provided with at least one deflecting device for each of the web strands of the bundle. The deflecting devices form a deflection axis for the web strand of the bundle, the web strand being associated with it. The deflecting device is mounted movably such that the particular deflection axis formed is adjustable at right angles to an axial direction by a maximum adjusting path length.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: October 18, 2005
    Assignee: Maschinenfabrik WIFAG
    Inventors: Thomas Seiler, Daniel Burri, Martin Fröhlich
  • Patent number: 6953172
    Abstract: A roll changer for a web-treating or web-processing machine, or a web-fed printing press is provided. The roll changer includes a first roll arm (4) with a first axle journal (8), which can be pivoted about a pivot axis (3), and a second roll arm (5) with a second axle journal (8), which can be pivoted about the pivot axis (3) together with the first roll arm (4). The axle journals (8) form a rotary mount for a web roll (10) taken up between the roll arms (4, 5). A first stripper (9) is assigned to the first axle journal (8) and can be moved in relation to the first axle journal (8), in order to strip the web roll (10) from the first axle journal (8). A drive (11a-11d) is provided for pivoting the roll arms (4, 5) and moving the first stripper (9).
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: October 11, 2005
    Assignee: Maschinenfabrik WIFAG
    Inventor: Hans Moser
  • Patent number: 6880458
    Abstract: A process and device are provided for determining the position and/or the shape of at least one mark on a web to be printed on. The position and/or the shape of the at least one mark in the image to be printed is determined with the use of prepress data. The device for determining the position and/or the shape of at least one mark on a web to be printed on includes an input device for entering prepress data and a device for determining position data and/or shapes for a mark based on the prepress data entered.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: April 19, 2005
    Assignee: Maschinenfabrik WIFAG
    Inventors: Curt Munz, Jean-Claude Mengisen
  • Patent number: 6809754
    Abstract: The present invention pertains to a lens system for a laser for illustrating a printing form with at least one spherical lens. The spherical lens may be arranged between the laser and the printing form, in order to bundle laser light emitted by the laser. At least one aspherical lens is arranged between the spherical lens and the printing form, for focusing or converging the laser light onto a desired spot. A process is also provided for illustrating a printing form. A laser for exposing an area element of predetermined width and height is operated continuously. The laser light generated by the laser is focused by the lens system according such that a strip (L) is generated which has a width that approximately corresponds to the width of the area element to be exposed. The strip has a height (H) that is smaller than the height of the area element to be exposed.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: October 26, 2004
    Assignee: Maschinenfabrik Wifag
    Inventor: Matthias Riepenhoff
  • Patent number: 6802110
    Abstract: A web expanding device for or in a web-processing machine, especially a web-fed rotary printing press includes a frame and a cutting device (4) for longitudinally cutting a web (B) into a left-hand web strand (Bl) and a right-hand web strand (Br). A first deflecting device (5l) for the left-hand web strand (Bl) is provided along with a second left-hand deflecting device (6l) for the left-hand web strand (Bl), which is arranged after the first left-hand deflecting device (5l) in the direction of web delivery (F). A first right-hand deflecting device (5r) for the right-hand web strand (Br), which points toward the first left-hand deflecting device (5l) is provided along with a second right-hand deflecting device (6r) for the right-hand web strand (Br), which is arranged after the first right-hand deflecting device (5r) in the direction of web delivery (F) and points toward the second left-hand deflecting device (6l).
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: October 12, 2004
    Assignee: Maschinenfabrik Wifag
    Inventors: Dominik Berweger, Beat Luginbühl, Erich Kaufmann
  • Patent number: 6802253
    Abstract: A rotary printing machine, in particular in a reel-fed newspaper offset rotary press is provided with a device for correcting the web width. A rotatively mounted rotational body configuration is arranged in the path of the web between two print printing nips (2, 3) on one side of the web. The rotational body configuration (5; 6) has a wave-like profile that is transverse to the running direction of the web.
    Type: Grant
    Filed: February 24, 2003
    Date of Patent: October 12, 2004
    Assignee: Maschinenfabrik Wifag
    Inventor: Robert Langsch
  • Patent number: 6789476
    Abstract: A rotary body for compensating the fanout in a printing press. The rotary body forms alternatingly foot sections and head sections projecting over the foot sections by radial height differences along an axis of rotation. The rotary body is a torsion-proof connection of parts or is a one piece structure. The radial height differences increase in the circumferential direction from minima, which they have along a first straight line offset in parallel to the axis of rotation, to maxima, which they have along a second straight line offset in parallel to the axis of rotation.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: September 14, 2004
    Assignee: Maschinenfabrik Wifag
    Inventor: Robert Langsch
  • Publication number: 20040168599
    Abstract: A wet offset printing form has a top layer containing a photocatalytically and thermally modifiable material. The material can be brought photocatalytically into a hydrophilic state by irradiation with light and into a lipophilic state by heating. The hydrophilic state forms a surface that can be illustrated and the lipophilic state forms an illustrated surface. The top layer of the wet offset printing form may contain absorption centers for irradiation, especially for laser radiation in the NIR range, with which heating of the top layer in the pattern of an image is brought about.
    Type: Application
    Filed: February 10, 2004
    Publication date: September 2, 2004
    Applicant: Maschinenfabrik WIFAG
    Inventors: Matthias Riepenhoff, Olivier Stehlin
  • Patent number: 6779454
    Abstract: A process is provided for determining the position of a printed paper web in a printing press, especially in a rotary printing press. Reference values for determining the position from the image data of the preliminary printing stage are obtained. At least part of a printing style on the paper web is detected by at least one scanner. The reference values obtained from the image data of the preliminary printing stage are compared with the measured values detected by at least one sensor. The position of the printed paper web is determined from the result of the comparison. A device is provided for determining the position of a printed paper web in a printing press, especially in a rotary printing press, with a data processing device, in which reference values are generated from image data from the preliminary printing stage for determining the position. At least one sensor is provided for detecting at least part of a printing style on the paper web.
    Type: Grant
    Filed: October 3, 2002
    Date of Patent: August 24, 2004
    Assignee: Maschinenfabrik Wifag
    Inventors: Jean-Claude Mengisen, Curt Munz
  • Patent number: 6748857
    Abstract: A printing press with crop mark setting device and process is provided. A printing couple for printing on a web is used with a lengthwise cutting device for cutting the printed web lengthwise into a first web strand and at least one second web strand. A convergence device converges the web strands or for converging the web strands with at least one other web strand each to provide one or more converged web strands, the convergence device including a turning bar device. A cross-cutting device cross-cuts the converged web strands. A crop mark sets a crop mark of the web strands that is related to the cross cutting. The crop mark setting device has a first deflecting device for deflecting the first web strand around a first deflection axis and a second deflecting device for deflecting the second web strand around a second deflection axis.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: June 15, 2004
    Assignee: Maschinenfabrik Wifag
    Inventors: Thomas Seiler, Daniel Burri, Martin Fröhlich
  • Patent number: 6748861
    Abstract: A printing form (12) for a printing form cylinder (2) for wet offset printing has an ink-transferring surface that can be or is illustrated and passage channels opening on the ink-transferring surface for a moistening agent. The printing form (12) has a multilayer structure.
    Type: Grant
    Filed: March 16, 2000
    Date of Patent: June 15, 2004
    Assignee: Maschinenfabrik Wifag
    Inventors: Matthias Riepenhoff, Yufan Jiang
  • Patent number: 6729573
    Abstract: A roll changer for a web-treating or -processing machine is set up for winding off a working web (A) to be treated or processed from a working roll (A) and for connecting a reserve web (V) from a reserve roll (R2) to the working web (A). The roll changer includes a first mount (1, 4) for the working roll (R1) and a second mount (2, 5) for the reserve roll (R2). A connecting device (10) connects the reserve web (V) to the working web (A). A holding device (21) is arranged downstream of the connecting device (10) along the web for fixing the working web (A). A pulling device (16), is arranged in a path of the working web (A) between the connecting device (10) and the holding device (21) and is set up to pull the working web (A) from the working roll (R1) during the stoppage of the working roll (R1).
    Type: Grant
    Filed: September 19, 2002
    Date of Patent: May 4, 2004
    Assignee: Maschinenfabrik Wifag
    Inventors: Daniel Burri, Hans Moser