Patents Assigned to Bobst Bielefeld GmbH
  • Patent number: 10850499
    Abstract: A sleeve station dedicated to the assembly of a sleeve and a mandrel for a flexographic press. The sleeve station can be loaded manually, and assembles the sleeve with the mandrel in a vertical orientation when both are in a vertical orientation with aligned axes, avoiding problems caused by the bending of the sleeves during assembly. After loading of the sleeve, it is returned to a horizontal axis orientation.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: December 1, 2020
    Assignee: Bobst Bielefeld GmbH
    Inventor: Alexander Sudermann
  • Publication number: 20190152217
    Abstract: The invention is about a convenient way of fixing a sleeve over a mandrel in a press. The sleeve is attached by applying a hydraulic pressure into the mandrel which deforms itself and grips on the sleeve. The pressure is brought by a piston mounted on a screw inside the mandrel, which when tightened increases the pressure and grips the sleeve.
    Type: Application
    Filed: May 24, 2017
    Publication date: May 23, 2019
    Applicant: BOBST BIELEFELD GMBH
    Inventor: Lorenz LANDENBERGER
  • Patent number: 9505207
    Abstract: A color proofing apparatus, including an engraved roller (12) having a pattern of ink accommodating cavities on its peripheral surface, a back pressure cylinder (14) forming a nip with the engraved roller (12), a conveyor (16) adapted to feed a sheet (18) of a print substrate through the nip in synchronism with the movements of the peripheral surfaces of the engraved roller (12) and the back pressure cylinder (14), and an optical sensor (30) disposed at the conveyor (16) for measuring a color value of the sheet (18) that has passed through the nip.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: November 29, 2016
    Assignee: Bobst Bielefeld GmbH
    Inventors: Gordon Whitelaw, Wolfgang Brusdeilins
  • Publication number: 20140033938
    Abstract: A colour proofing apparatus, including an engraved roller (12) having a pattern of ink accommodating cavities on its peripheral surface, a back pressure cylinder (14) forming a nip with the engraved roller (12), a conveyor (16) adapted to feed a sheet (18) of a print substrate through the nip in synchronism with the movements of the peripheral surfaces of the engraved roller (12) and the back pressure cylinder (14), and an optical sensor (30) disposed at the conveyor (16) for measuring a colour value of the sheet (18) that has passed through the nip.
    Type: Application
    Filed: February 9, 2012
    Publication date: February 6, 2014
    Applicant: BOBST BIELEFELD GMBH
    Inventors: Gordon Whitelaw, Wolfgang Brusdeilins
  • Patent number: 8534194
    Abstract: A method of adjusting a roller (18) in a rotary printing press (10), includes the steps of a) mounting the roller (18) in a preparation rack (24) 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 (10), and e) adjusting the roller in accordance with the set data.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: September 17, 2013
    Assignee: Bobst Bielefeld GmbH
    Inventors: Gordon Whitelaw, Georg Grautoff, Andreas Kückelmann
  • Patent number: 8464638
    Abstract: A printing press includes at least one exchangeable cylinder (10, 12) that is rotatably supported in a machine frame, a movable bearing member (18) forming part of a bearing (44) for the exchangeable cylinder (12), and a sensor head (26, 28, 30) that is capable of receiving signals from a signalling device (22, 24, 32) that is mounted on one of the cylinders (10, 12) of the printing press, and the sensor head (26, 28, 30) is mounted on the movable bearing member (18) and is arranged to receive the signals from a signalling device (22, 24, 32) at least when the bearing member (18) is in a predetermined position.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: June 18, 2013
    Assignee: Bobst Bielefeld GmbH
    Inventors: Gordon Whitelaw, Thomas Haecker, Wolfgang Brusdeilins
  • Patent number: D836689
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: December 25, 2018
    Assignee: BOBST BIELEFELD GMBH
    Inventor: Thorsten Helm