Patents by Inventor Dirk Faes

Dirk Faes 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).

  • Publication number: 20110048265
    Abstract: A method for making a lithographic aluminum printing plate support comprising the steps of (i) graining said support by applying a charge density x; (ii) desmutting the grained support; (iii) graining the desmutted support by applying a charge density y; (iv) anodizing the support; characterized in that during each graining step a current density varying between 80 and 250 A/dm2 is applied and that the ratio x/x+y varies between 0.3 and 0.7.
    Type: Application
    Filed: March 7, 2008
    Publication date: March 3, 2011
    Applicant: Agfa Graphics NV
    Inventors: Paola Campestrini, Dirk Faes
  • Publication number: 20110014381
    Abstract: A method for making a lithographic printing plate support includes the steps of providing an aluminum support; graining the support in a graining electrolyte solution; and treating the grained support in a desmut electrolyte solution containing hydrochloric acid by applying a direct current resulting in a charge density Q; wherein the desmut electrolyte solution has a pH less than 1 and Q is at least 400 C/dm2.
    Type: Application
    Filed: February 25, 2009
    Publication date: January 20, 2011
    Applicant: AGFA GRAPHICS NV
    Inventors: Paola Campestrini, Dirk Faes
  • Patent number: 7318995
    Abstract: A method for preparing a negative-working lithographic printing plate is provided which comprises the steps of (1) providing a lithographic printing plate precursor comprising on a grained and anodized aluminum support, having a hydrophilic surface, a coating comprising (i) polymer particles which are core-shell particles having a hydrophobic heat-softenable core and a hydrophilic shell and (ii) an infrared light absorbing agent, (2) exposing said coating to heat, thereby inducing coalescence of said polymer particles at exposed areas of said coating, and (iii) developing said precursor by applying a gum solution to said coating, thereby removing non-exposed areas of said coating from said support. According to the above method the printing plates exhibit after ageing an improved clean-out and a reduced background stain, resulting in toning-free printing.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: January 15, 2008
    Assignee: Agfa Graphics NV
    Inventors: Sue Wilkinson, Huub Van Aert, Dirk Faes, Joan Vermeersch
  • Publication number: 20060073418
    Abstract: A method for preparing a negative-working lithographic printing plate is provided which comprises the steps of (1) providing a lithographic printing plate precursor comprising on a grained and anodized aluminum support, having a hydrophilic surface, a coating comprising (i) polymer particles which are core-shell particles having a hydrophobic heat-softenable core and a hydrophilic shell and (ii) an infrared light absorbing agent, (2) exposing said coating to heat, thereby inducing coalescence of said polymer particles at exposed areas of said coating, and (iii) developing said precursor by applying a gum solution to said coating, thereby removing non-exposed areas of said coating from said support. According to the above method the printing plates exhibit after ageing an improved clean-out and a reduced background stain, resulting in toning-free printing.
    Type: Application
    Filed: September 29, 2005
    Publication date: April 6, 2006
    Applicant: AGFA-GEVAERT
    Inventors: Sue Wilkinson, Huub Van Aert, Dirk Faes, Joan Vermeersch