Patents by Inventor Aart Nijkamp
Aart Nijkamp 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: 11247456Abstract: An electrical circuit for measuring the shape of a voltage waveform in a print head of a printer includes an integrated circuit for generating one or more voltage amplitude waveforms. The electrical circuit includes an inkjet drop forming unit including a plurality of inkjet chambers, wherein each of the plurality of inkjet chambers includes a piezoelectric actuator and an ink nozzle, and a connecting circuit between the integrated circuit and the inkjet drop forming unit suitable for applying one of the one or more voltage amplitude waveforms generated by the integrated circuit to the piezoelectric actuator in one of the plurality of inkjet chambers. In order to measure the shape of the one or more generated voltage amplitude waveforms via capacitive crosstalk, the electrical circuit also includes a conductor in physical proximity to the connecting circuit.Type: GrantFiled: November 8, 2019Date of Patent: February 15, 2022Assignee: Canon Production Printing Holding B.V.Inventors: Aart Nijkamp, Johannes M. M. Simons, Cornelis W. M. Venner
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Publication number: 20200156368Abstract: An electrical circuit for measuring the shape of a voltage waveform in a print head of a printer is provided. The electrical circuit comprises an integrated circuit for generating one or more voltage amplitude waveforms. Further, the electrical circuit comprises an inkjet drop forming unit comprising a plurality of inkjet chambers, wherein each of the plurality of inkjet chambers comprises a piezoelectric actuator and an ink nozzle, and a connecting circuit between the integrated circuit and the inkjet drop forming unit suitable for applying one of the one or more voltage amplitude waveforms generated by the integrated circuit to the piezoelectric actuator in one of the plurality of inkjet chambers. In order to measure the shape of the one or more generated voltage amplitude waveforms via capacitive crosstalk, the electrical circuit also comprises a conductor in physical proximity to the connecting circuit.Type: ApplicationFiled: November 8, 2019Publication date: May 21, 2020Applicant: Océ Holding B.V.Inventors: Aart NIJKAMP, Johannes M.M. SIMONS, Cornelis W.M. VENNER
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Patent number: 9889682Abstract: An apparatus is provided for positioning a substrate on a support body. The apparatus comprises the support body for supporting the substrate, at least one registration element, wherein said at least one registration element is positioned and arranged for registering the substrate in a preselected position on the support body when brought into a registering state. The apparatus further comprises a registration actuator movably arranged with respect to the support body for selectively arranging a registration element into the registering state.Type: GrantFiled: October 20, 2016Date of Patent: February 13, 2018Assignee: Oce-Technologies B.V.Inventor: Aart Nijkamp
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Patent number: 9701104Abstract: An apparatus is provided for processing a substrate on a support body. The apparatus comprises the support body, at least one registration member, a carriage unit and a controller. The support body is arranged for supporting the substrate. The at least one registration member is adapted for registering the substrate on the support body by engaging the substrate in contact to the at least one registration member, when the at least one registration member is arranged into a registering state. The carriage unit is movably arranged relative to the support body for processing the substrate.Type: GrantFiled: November 2, 2016Date of Patent: July 11, 2017Assignee: OCÉ HOLDING B.V.Inventor: Aart Nijkamp
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Publication number: 20170120574Abstract: An apparatus is provided for processing a substrate on a support body. The apparatus comprises the support body, at least one registration member, a carriage unit and a controller. The support body is arranged for supporting the substrate. The at least one registration member is adapted for registering the substrate on the support body by engaging the substrate in contact to the at least one registration member, when the at least one registration member is arranged into a registering state. The carriage unit is movably arranged relative to the support body for processing the substrate.Type: ApplicationFiled: November 2, 2016Publication date: May 4, 2017Applicant: Océ Holding B.V.Inventor: Aart NIJKAMP
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Publication number: 20170120629Abstract: An apparatus is provided for positioning a substrate on a support body. The apparatus comprises the support body for supporting the substrate, at least one registration element, wherein said at least one registration element is positioned and arranged for registering the substrate in a preselected position on the support body when brought into a registering state. The apparatus further comprises a registration actuator movably arranged with respect to the support body for selectively arranging a registration element into the registering state.Type: ApplicationFiled: October 20, 2016Publication date: May 4, 2017Applicant: Océ-Technologies B.V.Inventor: Aart NIJKAMP
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Patent number: 9567179Abstract: A print media discharge unit includes a print media transport path along which in operation a sheet of print media is transported in a transport direction. The print media transport path is defined by a first electrically isolating print media guide and a second electrically isolating print media guide. The print media discharge unit further includes an electrically grounded electrically conductive discharge element extending through an opening in at least one of the first and second electrically isolating print media guides into the print media transport path. At least one of the first and second electrically isolating print media guide includes a plurality of guidance ribs aligned substantially in the transport direction at an angle with respect to the transport direction.Type: GrantFiled: July 20, 2015Date of Patent: February 14, 2017Assignee: OCÉ-TECHNOLOGIES B.V.Inventors: Kevin H. J. R. Prinsen, Aart Nijkamp
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Publication number: 20160185554Abstract: The invention pertains to a print media discharge unit, comprising a print media transport path along which in operation a sheet of print media is transported in a transport direction, the print media transport path is defined by a first electrically isolating print media guide and a second electrically isolating print media guide, the print media discharge unit further comprising an electrically grounded electrically conductive discharge element extending through an opening in at least one of said first and second electrically isolating print media guides into the print media transport path, wherein at least one of said first and second electrically isolating print media guide comprise a plurality of guidance ribs aligned substantially in the transport direction at an angle with respect to the transport direction.Type: ApplicationFiled: July 20, 2015Publication date: June 30, 2016Applicant: Océ-Technologies B.V.Inventors: Kevin H.J.R. PRINSEN, Aart NIJKAMP
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Patent number: 7548250Abstract: An image-forming element for a printing apparatus which includes a support structure with a plurality of electrodes of a first type disposed thereon and an electronic control unit for energizing the electrodes. The image-forming element further includes a plurality of electrodes of a second type, each one of said electrodes of the second type being arranged for interacting capacitively through a dielectric layer with a number of electrodes of the first type, forming a group, the electronic control unit containing a first series of drivers for energizing the electrodes of the first type, each one of said drivers being suited for energizing one electrode of the first type within each group and a second series of drivers for energizing individually the electrodes of the second type, the first and second series of drivers being arranged such that the electrodes of the first type can be individually activated, image wise.Type: GrantFiled: November 23, 2005Date of Patent: June 16, 2009Assignee: OCE-Technologies B.V.Inventors: Catharinus Van Acquoij, Rene J. Van Der Meer, Aart Nijkamp, Stanislaw K. J. Lenczowski, David D. L. Wijngaards, Albert G. M. Van Welie, Johannes G. V. Van Stiphout
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Publication number: 20060109333Abstract: An image-forming element for a printing apparatus which includes a support structure with a plurality of electrodes of a first type disposed thereon and an electronic control unit for energizing the electrodes. The image-forming element further includes a plurality of electrodes of a second type, each one of said electrodes of the second type being arranged for interacting capacitively through a dielectric layer with a number of electrodes of the first type, forming a group, the electronic control unit containing a first series of drivers for energizing the electrodes of the first type, each one of said drivers being suited for energizing one electrode of the first type within each group and a second series of drivers for energizing individually the electrodes of the second type, the first and second series of drivers being arranged such that the electrodes of the first type can be individually activated, image wise.Type: ApplicationFiled: November 23, 2005Publication date: May 25, 2006Inventors: Catharinus Acquoij, Rene Van Der Meer, Aart Nijkamp, Stanislaw Lenczowski
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Patent number: 6795101Abstract: An image forming device includes an image forming element moving past an image forming station in which a toner is deposited on the surface of the image forming element, the image forming element having at least one electrode extending over a predetermined surface area of the image forming element. The image device also includes an impedance/capacitance measuring circuit measuring the amount of toner deposited on the predetermined surface area on the basis of a resulting change in the impedance/capacitance of the electrode.Type: GrantFiled: April 12, 2002Date of Patent: September 21, 2004Assignee: Oce-Technologies B.V.Inventors: Rene Johannes Van Der Meer, Aart Nijkamp
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Publication number: 20020158956Abstract: An image forming device includes an image forming element moving past an image forming station in which a toner is deposited on the surface of the image forming element, the image forming element having at least one electrode extending over a predetermined surface area of the image forming element. The image device also includes an impedance/capacitance measuring circuit measuring the amount of toner deposited on the predetermined surface area on the basis of a resulting change in the impedance/capacitance of the electrode.Type: ApplicationFiled: April 12, 2002Publication date: October 31, 2002Inventors: Rene Johannes Van Der Meer, Aart Nijkamp