Patents by Inventor Lode Erik Dries Deprez

Lode Erik Dries Deprez 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: 10836194
    Abstract: A method for curing of an actinic light sensitive ink or toner layer on a substrate includes irradiating the actinic light sensitive ink or toner layer with a first radiation dose D1 in a first spectral range between 320 nm and 445 nm, followed by a second radiation dose D2 in a second spectral range between 200 nm and 319 nm. The ratio D1/D2 of the first radiation dose and the second radiation dose is between 0.25 and 500, more preferably between 0.25 and 200, even more preferably between 0.50 and 100.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: November 17, 2020
    Assignee: XEIKON MANUFACTURING N.V.
    Inventors: Lode Erik Dries Deprez, Wout Victor Maria Vervoort, Herman Jan Godelieve Van De Straete, Nick Horemans, Wouter Bart Tinne Leus
  • Patent number: 10808136
    Abstract: The ink composition comprises pigment particles and a stimulus responsive dispersing agent for dispersing said pigment particles in a protic polar solvent, for instance for inkjet printing, which stimulus responsive dispersing agent comprises an anchoring part for anchoring to said pigment particles, a stimulus responsive part as shown in formula (XXa) or (XXb) and a hydrophilic part for solvent stabilization of the pigment, wherein the stimulus responsive part upon exposure to a stimulus initiates decomposition of the stimulus responsive dispersing agent. The paper with the printed ink can be deinked in an industrial deinking process.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: October 20, 2020
    Assignee: Xeikon Manufacturing N.V.
    Inventors: Geert Gaston Paul Deroover, Lode Erik Dries Deprez
  • Publication number: 20200310289
    Abstract: A digital printing process for xerography printing with curable dry toner. The process includes: forming a latent image as a pattern of electric charge on a surface of an imaging member; transferring dry toner onto a development member; developing the latent image by transferring dry toner from the development member onto the imaging member in accordance with the pattern; transferring the dry toner from the imaging member to a first substrate; applying a second substrate on the transferred dry toner, fusing the transferred dry toner, and bonding the second substrate to the first substrate. The fusing is done before and/or during and/or after the applying of the second substrate. After application of the second substrate, the dry toner is irradiated with actinic radiation or particle beams to cure at least the fused transferred dry toner. The irradiating is done after and/or during the fusing.
    Type: Application
    Filed: October 25, 2018
    Publication date: October 1, 2020
    Applicant: XEIKON MANUFACTURING N.V.
    Inventors: Lode Erik Dries DEPREZ, Werner Jozef Johan OP DE BEECK, Karlien Maria Hugo Renata TORFS, Maarten Marina E VANDENBERGH
  • Publication number: 20200255570
    Abstract: The polymeric dispersant is a copolymer obtainable by copolymerizing at least a first monomer chosen from a maleimide compound and maleic anhydride, and a second monomer being an ethylenically unsaturated monomer and in case of maleic anhydride, conversion of resulting maleic anhydride units to N-substituted maleimide units, wherein the first monomer comprises a first substituent having a substantially non-polar chain and wherein the second monomer comprises a second, more polar substituent. In one embodiment of the copolymerisation method, first and second monomers are used with copolymerisation parameters r1, r2, such that r1 and r2?0.5. This results in an at least moderately alternating copolymer. The conversion of maleic anhydride units to maleimide may be partial, for instance at least 10%. The polymeric dispersant can be used in an ink dispersion further comprising colorant particles and an aqueous and/or alcoholic carrier liquid.
    Type: Application
    Filed: January 23, 2018
    Publication date: August 13, 2020
    Inventors: Wouter Jeroom Maria Van Gaens, Geert Gaston Paul Deroover, Lode Erik Dries Deprez, Werner Jozef Johan Op de Beeck, Mathias Jo Bert van Remortel
  • Patent number: 10627745
    Abstract: A digital printing process for xerography printing with liquid toner is disclosed, said liquid toner including a curable carrier liquid and imaging particles suspended in the carrier liquid. The process includes: forming a latent image as a pattern of electric charge on a surface of an imaging member; transferring the liquid toner onto a development member; developing the latent image by transferring liquid toner from the development member onto the imaging member in accordance with the pattern; transferring the liquid toner from the imaging member to a first substrate; applying a second substrate on the transferred liquid toner; after application of the second substrate, irradiating the liquid toner with actinic radiation or particle beams to cure the carrier liquid.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: April 21, 2020
    Assignee: Xeikon Manufacturing N.V.
    Inventors: Lode Erik Dries Deprez, Werner Jozef Johan Op de Beeck, Wouter Jeroom Maria Van Gaens
  • Publication number: 20200070555
    Abstract: A method for curing of an actinic light sensitive ink or toner layer on a substrate includes irradiating the actinic light sensitive ink or toner layer with a first radiation dose D1 in a first spectral range between 320 nm and 445 nm, followed by a second radiation dose D2 in a second spectral range between 200 nm and 319 nm. The ratio D1/D2 of the first radiation dose and the second radiation dose is between 0.25 and 500, more preferably between 0.25 and 200, even more preferably between 0.50 and 100.
    Type: Application
    Filed: May 17, 2018
    Publication date: March 5, 2020
    Applicant: XEIKON MANUFACTURING N.V.
    Inventors: Lode Erik Dries DEPREZ, Wout Victor Maria VERVOORT, Herman Jan Godelieve VAN DE STRAETE, Nick HOREMANS, Wouter Bart Tinne LEUS
  • Patent number: 10539898
    Abstract: A radiation curable dry toner includes core-shell toner particles. The core-shell toner particles have an average volume-based diameter between 5 and 10 micrometre, and a core-shell toner particle thereof includes an inner portion having a radiation curable first resin material consisting of at least 90 weight %, preferably at least 95 weight %, of the total amount of resin material of the inner portion; an outer shell surrounding said inner portion, said outer shell including a second resin material, said second resin material being any one of the following: cured first resin material; or a resin material which is different from the first resin material.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: January 21, 2020
    Assignee: Xeikon Manufacturing N.V.
    Inventors: Lode Erik Dries Deprez, Werner Jozef Johan Op de Beeck
  • Publication number: 20190146377
    Abstract: A digital printing process for xerography printing with liquid toner is disclosed, said liquid toner including a curable carrier liquid and imaging particles suspended in the carrier liquid. The process includes: forming a latent image as a pattern of electric charge on a surface of an imaging member; transferring the liquid toner onto a development member; developing the latent image by transferring liquid toner from the development member onto the imaging member in accordance with the pattern; transferring the liquid toner from the imaging member to a first substrate; applying a second substrate on the transferred liquid toner; after application of the second substrate, irradiating the liquid toner with actinic radiation or particle beams to cure the carrier liquid.
    Type: Application
    Filed: April 25, 2017
    Publication date: May 16, 2019
    Inventors: Lode Erik Dries Deprez, Werner Jozef Johan Op de Beeck, Wouter Jeroom Maria Van Gaens
  • Publication number: 20190129322
    Abstract: A radiation curable dry toner includes core-shell toner particles. The core-shell toner particles have an average volume-based diameter between 5 and 10 micrometre, and a core-shell toner particle thereof includes an inner portion having a radiation curable first resin material consisting of at least 90 weight %, preferably at least 95 weight %, of the total amount of resin material of the inner portion; an outer shell surrounding said inner portion, said outer shell including a second resin material, said second resin material being any one of the following: cured first resin material; or a resin material which is different from the first resin material.
    Type: Application
    Filed: April 25, 2017
    Publication date: May 2, 2019
    Inventors: Lode Erik Dries Deprez, Werner Jozef Johan Op de Beeck
  • Patent number: 9785079
    Abstract: A digital printing apparatus using liquid toner comprising carrier liquid, a dispersing agent and imaging particles, the apparatus comprising: an imaging member adapted to sustain a pattern of electric charge forming a latent image on its surface; a development member arranged to receive a quantity of liquid toner; and to develop said latent image by transferring a portion of said quantity of liquid toner onto said imaging member in accordance with said pattern; a melting unit arranged downstream of the imaging member and configured to melt imaging particles of a transferred part of the portion of liquid toner, said part being transferred from the imaging member, wherein there is provided a dispersing capacity modification unit downstream of the imaging member, said dispersing capacity modification unit being configured for reducing the dispersing capacity of the dispersing agent in the transferred part of the portion of liquid toner.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: October 10, 2017
    Assignee: Xeikon Manufacturing N.V.
    Inventors: Lode Erik Dries Deprez, Werner Jozef Johan Op De Beeck, Geert Gaston Paul Deroover
  • Publication number: 20170168431
    Abstract: The digital printing process includes the printing of liquid toner on both substrate sides. Thereto developed portions of a first and a second liquid toner are transferred to the first side and fused by exposure to infrared radiation and by subsequent contact fusing. The substrate is conditioned for a further transfer step by maintaining a substantially uniform water content therein during and after the fusing step, in which further transfer step at least one further developed portion of liquid toner is transferred to a side of the substrate. This occurs particularly by limiting heat development in the liquid toner, such as by using a black toner liquid with an absorbance at 800 nm of at most than 0.8.
    Type: Application
    Filed: June 25, 2015
    Publication date: June 15, 2017
    Inventors: Lode Erik Dries Deprez, Werner Jozef Johan Op de Beeck
  • Patent number: 9606475
    Abstract: The printing method includes the steps of (1) Transferring after charging a charged liquid developer dispersion from a surface of the first member optionally via the at least one further member to a substrate, wherein excess liquid developer dispersion remains present on the first member after the transfer; (2) Treating the excess liquid developer dispersion so as to facilitate its removal from the first member (3) removing, at least substantially, the treated excess liquid developer dispersion from the surface of the first member using a removal device, and (4) upon interrupting or terminating the printing, removing material adhered to the removal device.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: March 28, 2017
    Assignee: Xeikon IP B.V.
    Inventors: Werner Jozef Johan Op de Beeck, Wim Libaers, Lode Erik Dries Deprez
  • Patent number: 9588464
    Abstract: The digital printing apparatus uses a liquid toner comprising toner particles in a carrier liquid for printing an image on a substrate. It includes an imaging member adapted to sustain a pattern of electric charge forming a latent image on its surface; a development member arranged to receive a quantity of the liquid toner dispersion and to develop said latent image; means for transfer of the liquid toner dispersion from the imaging member to the substrate at a transfer location, and a fusing unit. The apparatus further includes a liquid removal unit arranged for removal of carrier liquid from the substrate, and upstream of said fusing unit.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: March 7, 2017
    Assignee: Xeikon IP B.V.
    Inventors: Lode Erik Dries Deprez, Nick Horemans
  • Patent number: 9575436
    Abstract: A digital printing system includes a development member in rotational contact with a further member for imagewise transferring liquid toner from the development member optionally via the further member to a substrate. The system is such that toner residue remains on the development member after the transfer. A treatment device is present for patternwise treatment of the toner residue on the development member, especially by addition of a dispersing agent to facilitate removal of the toner residue. A controller is present for controlling the patternwise treatment. A system is used for robust and continuous printing and is suitable for recycling of the toner residue into liquid toner.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: February 21, 2017
    Assignee: Xeikon IP B.V.
    Inventors: Lode Erik Dries Deprez, Werner Jozef Johan Op de Beeck
  • Publication number: 20170028733
    Abstract: In the method of digitally printing an image onto a substrate, a liquid toner dispersion including toner particles in a substantially non-polar carrier liquid is applied to the substrate as a plurality of droplets and in accordance with a pattern, said pattern being based on the image to be printed. The liquid toner dispersion is thereafter splitted into a first and a second layer, which first layer is rich in toner particles and located adjacent to the first surface, which second layer is rich in carrier liquid. At least part of the second layer is removed by means of a liquid removal device; and the compacted toner particles is fused to obtain the image.
    Type: Application
    Filed: April 8, 2015
    Publication date: February 2, 2017
    Applicant: Xeikon IP B.V.
    Inventors: Lode Erik Dries Deprez, Werner Jozef Johan Op de Beeck
  • Patent number: 9500998
    Abstract: Disclosed is a liquid toner dispersion which has a relative low shear viscosity between 1.25 and 225 and a relative conductivity between 0.3 and 30. The liquid toner dispersion includes toner particles in a non-polar carrier liquid, as well as a dispersing agent. This liquid toner dispersion is used in a digital printing process including adding dispersing agent during recycling of excess liquid toner dispersion remaining on a development member after patterned transfer of liquid toner dispersion to the imaging member.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: November 22, 2016
    Assignee: Xeikon IP B.V.
    Inventors: Lode Erik Dries Deprez, Wim Libaers, Werner Jozef Johan Op de Beeck, Kurt Gustaaf Maria Mampaey, Mathias Jo Bert van Remortel
  • Patent number: 9482979
    Abstract: A liquid toner dispersion provided with marking particles comprising a pigment and a polyester based resin. The dispersion includes a nonpolar organic solvent and a hyperdispersant including a graft copolymer provided with an anchor group including an amine-functionalized polymer onto which at least one stabilizing group is grafted. The stabilizing group includes a hydroxylated fatty acid oligomer. The amine-functionalized polymer has a weight-average molecular weight of less than 1000 g/mol.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: November 1, 2016
    Assignee: Xeikon IP BV
    Inventors: Werner Jozef Johan Op de Beeck, Lode Erik Dries Deprez, Geert Gaston Paul Deroover
  • Patent number: 9465310
    Abstract: A liquid toner dispersion provided with marking particles comprising a pigment and a polyester based resin, the dispersion comprising a nonpolar organic carrier liquid and a hyperdispersant comprising a graft copolymer provided with an anchor group comprising an amine-functionalized polymer onto which at least one stabilizing group is grafted, wherein a first stabilizing group and a second stabilizing group are coupled to the anchor group, wherein the first stabilizing group is a polyolefin and the second stabilizing group is hydroxylated fatty acid compound.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: October 11, 2016
    Assignee: Xeikon IP BV
    Inventors: Geert Gaston Paul Deroover, Lode Erik Dries Deprez, Werner Jozef Johan Op de Beeck
  • Publication number: 20160291496
    Abstract: A digital printing apparatus using liquid toner comprising carrier liquid, a dispersing agent and imaging particles, the apparatus comprising: an imaging member adapted to sustain a pattern of electric charge forming a latent image on its surface; a development member arranged to receive a quantity of liquid toner; and to develop said latent image by transferring a portion of said quantity of liquid toner onto said imaging member in accordance with said pattern; a melting unit arranged downstream of the imaging member and configured to melt imaging particles of a transferred part of the portion of liquid toner, said part being transferred from the imaging member, wherein there is provided a dispersing capacity modification unit downstream of the imaging member, said dispersing capacity modification unit being configured for reducing the dispersing capacity of the dispersing agent in the transferred part of the portion of liquid toner.
    Type: Application
    Filed: April 24, 2014
    Publication date: October 6, 2016
    Applicant: XEIKON IP BV
    Inventors: Lode Erik Dries Deprez, Werner Jozef Johan Op De Beeck, Geert Gaston Paul Deroover
  • Publication number: 20160195834
    Abstract: The printing method comprises the steps of (1) Transferring after charging a charged liquid developer dispersion from a surface of the first member optionally via the at least one further member to a substrate, wherein excess liquid developer dispersion remains present on the first member after said transfer; (2) Treating the excess liquid developer dispersion so as to facilitate its removal from the first member (3) removing, at least substantially, the treated excess liquid developer dispersion from the surface of the first member by means of a removal device, and (4) upon interrupting or terminating the printing, removing material adhered to the removal device.
    Type: Application
    Filed: September 4, 2014
    Publication date: July 7, 2016
    Inventors: Werner Jozef Johan Op de Beeck, Wim Libaers, Lode Erik Dries Deprez