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).
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Patent number: 10539898Abstract: 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: GrantFiled: April 25, 2017Date of Patent: January 21, 2020Assignee: Xeikon Manufacturing N.V.Inventors: Lode Erik Dries Deprez, Werner Jozef Johan Op de Beeck
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Publication number: 20190146377Abstract: 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: ApplicationFiled: April 25, 2017Publication date: May 16, 2019Inventors: Lode Erik Dries Deprez, Werner Jozef Johan Op de Beeck, Wouter Jeroom Maria Van Gaens
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Publication number: 20190129322Abstract: 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: ApplicationFiled: April 25, 2017Publication date: May 2, 2019Inventors: Lode Erik Dries Deprez, Werner Jozef Johan Op de Beeck
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Patent number: 9785079Abstract: 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: GrantFiled: April 24, 2014Date of Patent: October 10, 2017Assignee: Xeikon Manufacturing N.V.Inventors: Lode Erik Dries Deprez, Werner Jozef Johan Op De Beeck, Geert Gaston Paul Deroover
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Publication number: 20170168431Abstract: 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: ApplicationFiled: June 25, 2015Publication date: June 15, 2017Inventors: Lode Erik Dries Deprez, Werner Jozef Johan Op de Beeck
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Patent number: 9606475Abstract: 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: GrantFiled: September 4, 2014Date of Patent: March 28, 2017Assignee: Xeikon IP B.V.Inventors: Werner Jozef Johan Op de Beeck, Wim Libaers, Lode Erik Dries Deprez
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Patent number: 9588464Abstract: 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: GrantFiled: June 27, 2014Date of Patent: March 7, 2017Assignee: Xeikon IP B.V.Inventors: Lode Erik Dries Deprez, Nick Horemans
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Patent number: 9575436Abstract: 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: GrantFiled: September 4, 2014Date of Patent: February 21, 2017Assignee: Xeikon IP B.V.Inventors: Lode Erik Dries Deprez, Werner Jozef Johan Op de Beeck
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Publication number: 20170028733Abstract: 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: ApplicationFiled: April 8, 2015Publication date: February 2, 2017Applicant: Xeikon IP B.V.Inventors: Lode Erik Dries Deprez, Werner Jozef Johan Op de Beeck
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Patent number: 9500998Abstract: 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: GrantFiled: April 4, 2014Date of Patent: November 22, 2016Assignee: 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
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Patent number: 9482979Abstract: 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: GrantFiled: December 9, 2014Date of Patent: November 1, 2016Assignee: Xeikon IP BVInventors: Werner Jozef Johan Op de Beeck, Lode Erik Dries Deprez, Geert Gaston Paul Deroover
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Patent number: 9465310Abstract: 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: GrantFiled: January 12, 2015Date of Patent: October 11, 2016Assignee: Xeikon IP BVInventors: Geert Gaston Paul Deroover, Lode Erik Dries Deprez, Werner Jozef Johan Op de Beeck
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Publication number: 20160291496Abstract: 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: ApplicationFiled: April 24, 2014Publication date: October 6, 2016Applicant: XEIKON IP BVInventors: Lode Erik Dries Deprez, Werner Jozef Johan Op De Beeck, Geert Gaston Paul Deroover
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Publication number: 20160195834Abstract: 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: ApplicationFiled: September 4, 2014Publication date: July 7, 2016Inventors: Werner Jozef Johan Op de Beeck, Wim Libaers, Lode Erik Dries Deprez
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Publication number: 20160179035Abstract: 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: ApplicationFiled: June 27, 2014Publication date: June 23, 2016Inventors: Lode Erik Dries Deprez, Nick Horemans
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Publication number: 20160177118Abstract: 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: ApplicationFiled: June 27, 2014Publication date: June 23, 2016Inventors: Geert Gaston Paul Deroover, Lode Erik Dries Deprez
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Publication number: 20160179036Abstract: The digital printing system comprises a development member in rotational contact with a further member for imagewise transferring liquid toner from the development member optionally via said further member to a substrate. The system is such that toner residue remains on the development member after the transfer. Treatment means are present for patternwise treatment of said toner residue on said development member, especially by addition of a dispersing agent, so as to facilitate removal of the toner residue by means of removal means. Control means are present for controlling the patternwise treatment. The system is used for robust and continuous printing and is suitable for recycling of the toner residue into liquid toner.Type: ApplicationFiled: September 4, 2014Publication date: June 23, 2016Inventors: Lode Erik Dries Deprez, Werner Jozef Johan Op de Beeck
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Patent number: 9285715Abstract: A method for the reduction of caking of excess liquid developer dispersion that remains present on the surface of a member after transfer of liquid developer dispersion from one member to another member in a digital printing apparatus, comprising the step of adding a dispersing composition to the excess liquid developer dispersion, wherein the dispersing composition comprises a dispersing agent.Type: GrantFiled: April 3, 2014Date of Patent: March 15, 2016Assignee: Xeikon IP BVInventors: Dirk Marcel Constant Gijsbrechts, Werner Jozef Johan Op De Beeck, Wim Libaers, Lode Erik Dries Deprez
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Publication number: 20160041506Abstract: 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: ApplicationFiled: April 4, 2014Publication date: February 11, 2016Applicant: 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
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Patent number: 9170515Abstract: This invention is related to a liquid developer dispersion for use in a digital printing apparatus comprising a non volatile carrier liquid, a marking particle and a dispersing compounds, wherein the marking particle in the liquid developer dispersion is stabilized during storage and wherein at fusing two phases are formed. The invention is also related to the use of the developer in a digital printing apparatus and to a method for preparing the liquid developer dispersion.Type: GrantFiled: September 27, 2013Date of Patent: October 27, 2015Assignee: Xeikon IP BVInventors: Lode Erik Dries Deprez, Werner Jozef Johan Op de Beeck, Mathias Jo Bert van Remortel, Dirk Marcel Constant Gijsbrechts