Patents by Inventor Rolf Schwan

Rolf Schwan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9529263
    Abstract: The invention pertains to an exposure apparatus, a method for exposing a photosensitive element to radiation using the exposure apparatus, and a method for preparing a printing form from the photosensitive element. The exposure apparatus includes a base assembly having an exposure bed that supports the photosensitive element, and a lamp housing assembly having two or more lamps. The lamp housing assembly includes an air distribution assembly having an air chamber that is disposed adjacent to the lamps and pressurized to provide uniform distribution of air exiting the air chamber to impinge a backside of each of the lamps. The air exiting the chamber and impinging the lamps is controlled by monitoring the temperature of the lamps and/or the irradiance emitting from the lamps.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: December 27, 2016
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Volker Struewe, Helmut Luetke, Rolf Schwan
  • Patent number: 9372407
    Abstract: The invention pertains to an exposure apparatus, a method for exposing a photosensitive element to radiation using the exposure apparatus, and a method for preparing a printing form from the photosensitive element. The exposure apparatus includes a base assembly having an exposure bed that supports the photosensitive element, and a lamp housing assembly having two or more lamps. The lamp housing assembly includes an air distribution assembly having an air chamber that is disposed adjacent to the lamps and pressurized to provide uniform distribution of air exiting the air chamber to impinge a backside of each of the lamps. The air exiting the chamber and impinging the lamps is controlled by monitoring the temperature of the lamps and/or the irradiance emitting from the lamps.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: June 21, 2016
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Volker Struewe, Helmut Luetke, Rolf Schwan
  • Publication number: 20160041468
    Abstract: The invention pertains to an exposure apparatus, a method for exposing a photosensitive element to radiation using the exposure apparatus, and a method for preparing a printing form from the photosensitive element. The exposure apparatus includes a base assembly having an exposure bed that supports the photosensitive element, and a lamp housing assembly having two or more lamps. The lamp housing assembly includes an air distribution assembly having an air chamber that is disposed adjacent to the lamps and pressurized to provide uniform distribution of air exiting the air chamber to impinge a backside of each of the lamps. The air exiting the chamber and impinging the lamps is controlled by monitoring the temperature of the lamps and/or the irradiance emitting from the lamps.
    Type: Application
    Filed: October 26, 2015
    Publication date: February 11, 2016
    Inventors: Volker STRUEWE, Helmut LUETKE, Rolf SCHWAN
  • Publication number: 20140315132
    Abstract: The invention pertains to an exposure apparatus, a method for exposing a photosensitive element to radiation using the exposure apparatus, and a method for preparing a printing form from the photosensitive element. The exposure apparatus includes a base assembly having an exposure bed that supports the photosensitive element, and a lamp housing assembly having two or more lamps. The lamp housing assembly includes an air distribution assembly having an air chamber that is disposed adjacent to the lamps and pressurized to provide uniform distribution of air exiting the air chamber to impinge a backside of each of the lamps. The air exiting the chamber and impinging the lamps is controlled by monitoring the temperature of the lamps and/or the irradiance emitting from the lamps.
    Type: Application
    Filed: April 3, 2014
    Publication date: October 23, 2014
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: VOLKER STRUEWE, Helmut Luetke, Rolf Schwan
  • Patent number: 8468940
    Abstract: The invention pertains to a method and apparatus for exposing a cylindrical print sleeve. The method and apparatus can accommodate exposing various cylindrical print sleeves having different sleeve lengths and/or diameters. The apparatus includes a sleeve support for supporting the cylindrical print sleeve at one end, a plurality of light tubes supported in a longitudinal orientation, and a means for positioning the light tubes along one of a plurality of concentric rails to form a substantially circular wall of light tubes about the print sleeve.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: June 25, 2013
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Helmut Luetke, Rolf Schwan, Volker Struewe
  • Publication number: 20100321663
    Abstract: The invention pertains to a method and apparatus for exposing a cylindrical print sleeve. The method and apparatus can accommodate exposing various cylindrical print sleeves having different sleeve lengths and/or diameters. The apparatus includes a sleeve support for supporting the cylindrical print sleeve at one end, a plurality of light tubes supported in a longitudinal orientation, and a means for positioning the light tubes along one of a plurality of concentric rails to form a substantially circular wall of light tubes about the print sleeve.
    Type: Application
    Filed: June 19, 2009
    Publication date: December 23, 2010
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Helmut Luetke, Rolf Schwan, Volker Struewe
  • Patent number: 5163235
    Abstract: An apparatus for washing out photopolymer printing plates by means of solvents, drying the printing plates and recovering the solvents, a conventional washout station and a conventional drying station being connected to a solvent recovery means integrated in the drying station, which consists of the following parts:a hermetically sealing drying chamber for the printing plates, having an adjustable hood (15) and stationary panel (16), with panel heaters (18a, 18b) inserted in the hood and panel,a system which is connected to the interior space formed when the drying chamber is closed and which consists of a heat exchanger (25) for cooling the solvent vapor/air mixture, formed by drying the printing plates in the drying chamber, and condensation of the solvents,a solvent separator (26) for separating off the liquefied solvents,a vacuum pump (27) and a buffer vessel (33) for sucking up the solvent vapor/air mixture and compressing the solvent vapor/air mixture,a heat exchanger (28) for increasing the temperature
    Type: Grant
    Filed: May 3, 1991
    Date of Patent: November 17, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Horst Hoffmann, Norbert Holl, Rolf Schwan