Patents by Inventor Joan Vermeersch
Joan Vermeersch 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: 8377628Abstract: A heat-sensitive negative-working lithographic printing plate precursor includes on a grained and anodized aluminum support a coating including hydrophobic thermoplastic polymer particles, a hydrophilic binder, and an organic compound, wherein the organic compound includes at least one phosphonic acid group or at least one phosphoric acid group or a salt thereof.Type: GrantFiled: April 4, 2006Date of Patent: February 19, 2013Assignee: Agfa Graphics NVInventors: Pascal Meeus, Joan Vermeersch
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Patent number: 8216769Abstract: A heat-sensitive negative-working lithographic printing plate precursor includes a support having a hydrophilic surface or which is provided with a hydrophilic layer and a coating provided thereon, the coating including an image-recording layer which includes hydrophobic thermoplastic polymer particles, a binder, and an infrared absorbing dye; wherein the hydrophobic thermoplastic polymer particles have an average particle diameter, measured by Photon Correlation Spectroscopy, of more than 10 nm and less than 40 nm; the amount of the IR-dye, without taking into account an optional counter ion, is more than 0.80 mg per m2 of the total surface of the thermoplastic polymer particles, measured by Hydrodynamic Fractionation; and the amount of hydrophobic thermoplastic polymer particles relative to the total weight of the ingredients of the imaging layer is at least 60%.Type: GrantFiled: May 22, 2007Date of Patent: July 10, 2012Assignee: Agfa Graphics NVInventors: Hieronymus Andriessen, Steven Lezy, Hubertus Van Aert, Joan Vermeersch
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Patent number: 8133657Abstract: A method for making a lithographic printing plate includes the steps of (i) providing a lithographic printing plate precursor including a coating, the coating including an image-recording layer which includes hydrophobic thermoplastic polymer particles, a binder, and an infrared absorbing dye, wherein the hydrophobic thermoplastic polymer particles have an average particle diameter, measured by Photon Correlation Spectroscopy, of more than 10 nm and less than 40 nm, and the amount of the IR-dye, without taking into account an optional counter ion, is more than 0.70 mg per m2 of the total surface of the thermoplastic polymer particles, measured by Hydrodynamic Fractionation, and the amount of hydrophobic thermoplastic polymer particles relative to the total weight of the ingredients of the imaging layer is at least 60%; (ii) exposing the precursor to infrared light; and (iii) developing the exposed precursor in an alkaline aqueous solution.Type: GrantFiled: May 22, 2007Date of Patent: March 13, 2012Assignee: Agfa Graphics NVInventors: Hieronymus Andriessen, Steven Lezy, Hubertus Van Aert, Joan Vermeersch
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Patent number: 7767384Abstract: A method for making a heat-sensitive negative-working lithographic printing plate precursor including the steps of providing a support having a hydrophilic surface or which is provided with a hydrophilic layer, and applying onto the support a coating solution including an infrared absorbing agent, hydrophobic thermoplastic polymer particles, a hydrophilic binder, and a polymer including siloxane and/or perfluoroalkyl monomeric units.Type: GrantFiled: November 24, 2005Date of Patent: August 3, 2010Assignee: Agfa Graphics NVInventors: Joan Vermeersch, Marc Van Damme
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Publication number: 20090258314Abstract: A heat-sensitive negative-working lithographic printing plate precursor include a support having a hydrophilic surface or which is provided with a hydrophilic layer and a coating provided thereon, the coating including an image-recording layer which includes hydrophobic thermoplastic polymer particles, a binder, and an infrared absorbing dye; wherein the hydrophobic thermoplastic polymer particles have an average particle diameter, measured by Photon Correlation Spectroscopy, of more than 10 nm and less than 40 nm; the amount of the IR-dye, without taking into account an optional counter ion, is more than 0.80 mg per m2 of the total surface of the thermoplastic polymer particles, measured by Hydrodynamic Fraction; and—the amount of hydrophobic thermoplastic polymer particles relative to the total weight of the ingredients of the imaging layer is at least 60-%.Type: ApplicationFiled: May 22, 2007Publication date: October 15, 2009Applicant: AGFA GRAPHICS NVInventors: Hieronymus Andriessen, Steven Lezy, Hubertus Van Aert, Joan Vermeersch
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Publication number: 20090155722Abstract: A method for making a lithographic printing plate includes the steps of (i) providing a negative-working, heat-sensitive lithographic printing plate precursor including a support having a hydrophilic surface or which is provided with a hydrophilic layer and a coating provided thereon, the coating including an image-recording layer which includes hydrophobic thermoplastic polymer particles, a binder, and an infrared absorbing dye, wherein the hydrophobic thermoplastic polymer particles have an average particle diameter, measured by Photon Correlation Spectroscopy, of more than 10 nm and less than 40 nm, and the amount of the IR-dye, without taking into account an optional counter ion, is more than 0.Type: ApplicationFiled: May 22, 2007Publication date: June 18, 2009Applicant: AGFA GRAPHICS NVInventors: Hieronymus Andriessen, Steven Lezy, Hubertus Van Aert, Joan Vermeersch
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Publication number: 20090095184Abstract: A heat-sensitive negative-working lithographic printing plate precursor includes a support having a hydrophilic surface or which is provided with a hydrophilic layer and a coating provided thereon, the coating including an image-recording layer which includes hydrophobic thermoplastic polymer particles wherein the hydrophobic thermoplastic polymer particles include a polyester and have an average particle diameter from 18 nm to 50 nm.Type: ApplicationFiled: February 21, 2007Publication date: April 16, 2009Applicant: AGFA GRAPHICS NVInventors: Joan Vermeersch, Dirk Kokkelenberg, Hubertus Van Aert
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Patent number: 7473516Abstract: A method of making a lithographic printing plate includes the steps of: providing a lithographic printing plate precursor including (i) a support having a hydrophilic surface or which is provided with a hydrophilic layer and (ii) a coating provided thereon which includes hydrophobic thermoplastic polymer particles; exposing the coating to heat, thereby inducing coalescence of the thermoplastic polymer particles at exposed areas of the coating; and developing the precursor by applying a gum solution to the coating, thereby removing non-exposed areas of the coating from the support. According to the above method, the plate precursor can be developed and gummed in a single step.Type: GrantFiled: November 30, 2007Date of Patent: January 6, 2009Assignee: Agfa Graphics NVInventors: Joseph Vander Aa, Joan Vermeersch, Dirk Kokkelenberg, Huub Van Aert
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Patent number: 7467587Abstract: A method is disclosed for accurate reproduction of high-quality halftone images comprising microdots by means of lithographic plate materials which comprise a heat-sensitive positive-working coating that requires wet processing. Such microdots have a dot size ?25 ?m and may be obtained by stochastic screening or by amplitude-modulated screening at a ruling of not less than 150 lpi. It has been established that the “physical right exposure energy density” (physical REED) lies in the range from CP to 1.5*CP, wherein the physical REED is defined as the energy density at which the physical area on the plate, occupied by a microdot corresponding to a 50% halftone in the image data, coincides with the 50% target value; and wherein CP is the clearing point of the plate which is defined as the minimum energy density that is required to obtain, after processing, a dissolution of 95% of the coating.Type: GrantFiled: April 21, 2005Date of Patent: December 23, 2008Assignee: Agfa Graphics, N.V.Inventors: Joan Vermeersch, Wim Sap, Marc Van Damme
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Publication number: 20080311524Abstract: A method for making a negative-working heat-sensitive lithographic printing plate precursor includes the steps pf: (i) providing a support having a hydrophilic surface or which is provided with a hydrophilic layer; and (ii) applying on the support a coating which includes a product DQ, wherein DQ is obtained by: the step of coating a solution or dispersion including a nucleophilic compound Q and a dye D selected from the list consisting of di- or tri-arylmethane dyes, cyanine dyes, styryl dyes, and merostyryl dyes; or by D and Q interact to form interaction product DQ, having a white light optical density which is lower that the white light optical density of dye D; and the interaction product DQ is capable of at least partially releasing a dye directly after exposure to infrared light or heat, therby forming a visible image in the coating.Type: ApplicationFiled: July 1, 2005Publication date: December 18, 2008Applicant: AGFA GRAPHICS N.V.Inventors: Joan Vermeersch, Johan Loccufier, Paul Callant, Jurgen Jung, Marc Van Damme
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Patent number: 7455953Abstract: A positive working heat-sensitive lithographic printing plate precursor is disclosed which comprises a support having a hydrophilic surface and a coating, provided on the hydrophilic surface, wherein the coating comprises a spacer particle comprising aluminum hydroxide or aluminum oxide and having an average particle size larger than 0.3 ?m, for improving the scuff-mark resistance of the coating. Furthermore, the coating comprises an infrared light absorbing agent, an oleophilic resin soluble in an aqueous alkaline developer and a developer resistant means.Type: GrantFiled: March 25, 2004Date of Patent: November 25, 2008Assignee: Agfa Graphics, N.V.Inventors: Veerle Verschueren, Joan Vermeersch, Huub Van Aert, Eric Verschueren
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Publication number: 20080254389Abstract: A method for preparing a lithographic printing plate includes the steps of—providing a lithographic printing plate precursor including: a support having a hydrophilic surface or which is provided with a hydrophilic layer; and a coating provided on the support and including an image recording layer including hydrophobic thermoplastic polymer particles having an average particle size between about 40 nm and about 63 nm and a hydrophilic binder, the coating further including a pigment present in the image recording layer or in an additional layer of the coating, —image-wise exposing the coating, thereby inducing coalescence of the thermoplastic polymer particles at the exposed areas of the image recording layer; —developing the precursor by applying a gum solution to the coating, thereby removing the non-exposed areas of the image recording layer from the support; and—optionally, baking the developed precursor; wherein the hydrophobic thermoplastic polymer particles have an average particle size between about 40Type: ApplicationFiled: September 15, 2005Publication date: October 16, 2008Applicant: AGFA GRAPHICS NVInventors: Joan Vermeersch, Huub Van Aert
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Patent number: 7425405Abstract: A method for making a lithographic printing plate is disclosed which comprises the steps of: (i) providing a negative-working, heat-sensitive lithographic printing plate precursor comprising a support having a hydrophilic surface or which is provided with a hydrophilic layer and a coating provided thereon, the coating comprising an image-recording layer which comprises hydrophobic thermoplastic polymer particles and a hydrophilic binder, wherein the hydrophobic thermoplastic polymer particles have an average particle size in the range from 45 nm to 63 nm, and wherein the amount of the hydrophobic thermoplastic polymer particles in the image-recording layer is at least 70% by weight relative to the image-recording layer; (ii) exposing the coating to heat or infrared light, thereby inducing coalescence of the thermoplastic polymer particles at exposed areas of the coating; (iii) developing the precursor by applying an aqueous alkaline solution, thereby removing non-exposed areas of the coating from the suType: GrantFiled: June 30, 2005Date of Patent: September 16, 2008Assignee: Agfa Graphics, N.V.Inventors: Joan Vermeersch, Pascal Meeus
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Publication number: 20080213696Abstract: A heat-sensitive negative-working lithographic printing plate precursor includes on a grained and anodized aluminum support a coating including hydrophobic thermoplastic polymer particles, a hydrophilic binder, and an organic compound, wherein the organic compound includes at least one phosphonic acid group or at least one phosphoric acid group or a salt thereof.Type: ApplicationFiled: April 4, 2006Publication date: September 4, 2008Applicant: AGFA GRAPHICS NVInventors: Pascal Meeus, Joan Vermeersch
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Publication number: 20080199812Abstract: A method for making a heat-sensitive negative-working lithographic printing plate precursor including the steps of providing a support having a hydrophilic surface or which is provided with a hydrophilic layer, and applying onto the support a coating solution including an infrared absorbing agent, hydrophobic thermoplastic polymer particles, a hydrophilic binder, and a polymer including siloxane and/or perfluoroalkyl monomeric units.Type: ApplicationFiled: November 24, 2005Publication date: August 21, 2008Applicant: AGFA GRAPHICS NVInventors: Joan Vermeersch, Marc Van Damme
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Patent number: 7354696Abstract: A method for making a lithographic printing plate is disclosed which comprises the steps of: (i) providing a negative-working, heat-sensitive lithographic printing plate precursor comprising a support having a hydrophilic surface or which is provided with a hydrophilic layer and a coating provided thereon, the coating comprising an image-recording layer which comprises hydrophobic thermoplastic polymer particles and a hydrophilic binder, ?wherein the hydrophobic thermoplastic polymer particles have an average particle size in the range from 45 nm to 63 nm and wherein the amount of the hydrophobic thermoplastic polymer particles in the image-recording layer is at least 70% by weight relative to the image-recording layer; (ii) exposing the coating to heat or infrared light, thereby inducing coalescence of the thermoplastic polymer particles at exposed areas of the coating; (iii) developing the precursor by applying an aqueous, alkaline solution, thereby removing non-exposed areas of the coating from the suppType: GrantFiled: June 30, 2005Date of Patent: April 8, 2008Assignee: Agfa Graphics NVInventors: Joan Vermeersch, Pascal Meeus, Dirk Kokkelenberg
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Publication number: 20080076067Abstract: A method of making a lithographic printing plate includes the steps of: providing a lithographic printing plate precursor including (i) a support having a hydrophilic surface or which is provided with a hydrophilic layer and (ii) a coating provided thereon which includes hydrophobic thermoplastic polymer particles; exposing the coating to heat, thereby inducing coalescence of the thermoplastic polymer particles at exposed areas of the coating; and developing the precursor by applying a gum solution to the coating, thereby removing non-exposed areas of the coating from the support. According to the above method, the plate precursor can be developed and gummed in a single step.Type: ApplicationFiled: November 30, 2007Publication date: March 27, 2008Applicant: AGFA GRAPHICS NVInventors: Joseph VANDER AA, Joan VERMEERSCH, Dirk KOKKELENBERG, Huub VAN AERT
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Patent number: 7348126Abstract: A negative-working lithographic printing plate precursor is disclosed comprising on a support having a hydrophilic surface or which is provided with a hydrophilic layer, a coating comprising an infrared absorbing agent, a first layer comprising an aqueous dispersion comprising hydrophobic thermoplastic polymer particles and a first hydrophobic binder, and a second layer located between said first layer and said support which comprises a second hydrophobic binder, characterized in that said first hydrophobic binder is a phenolic resin and said second hydrophobic binder is a polymer comprising at least one sulphonamide group.Type: GrantFiled: April 25, 2005Date of Patent: March 25, 2008Assignee: Agfa Graphics N.V.Inventors: Joan Vermeersch, Marc Van Damme
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Patent number: 7318995Abstract: 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: GrantFiled: September 29, 2005Date of Patent: January 15, 2008Assignee: Agfa Graphics NVInventors: Sue Wilkinson, Huub Van Aert, Dirk Faes, Joan Vermeersch
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Patent number: 7316891Abstract: A method of making a lithographic printing plate is disclosed which comprises the steps of providing a lithographic printing plate precursor comprising (i) a support having a hydrophilic surface or which is provided with a hydrophilic layer and (ii) a coating provided thereon which comprises hydrophobic thermoplastic polymer particles; exposing the coating to heat, thereby inducing coalescence of the thermoplastic polymer particles at exposed areas of the coating; developing the precursor by applying a gum solution to the coating, thereby removing non-exposed areas of the coating from the support. According to the above method, the plate precursor can be developed and gummed in a single step.Type: GrantFiled: March 4, 2003Date of Patent: January 8, 2008Assignee: Agfa Graphics NVInventors: Joseph Vander Aa, Joan Vermeersch, Dirk Kokkelenberg, Huub Van Aert