Patents Assigned to Scrona AG
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Patent number: 11970002Abstract: An electrohydrodynamic print head has a plurality of nozzles arranged in a plurality of wells. Extraction electrodes are located around the wells at a level below the nozzles. Further, shielding electrodes are located around the wells at a level below the extraction electrodes. For each well, there are several such shielding electrodes located at different angular positions. This allows to use the shielding electrodes for laterally deflecting the ink after its ejection from the nozzles.Type: GrantFiled: November 11, 2019Date of Patent: April 30, 2024Assignee: SCRONA AGInventor: Patrick Galliker
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Publication number: 20240123729Abstract: An electrohydrodynamic inkjet printing system includes a print head with a plurality of ink nozzles arranged in recesses on the print head. A plurality of ejection electrodes located at the ink nozzles. A support structure is arranged in front of the ink nozzles and forming a front surface, wherein the ejection electrodes are arranged on the support structure. Gas from a first gas source and/or from a second gas source is conveyed through gas ducts and or gas is fed through the gas ducts to a gas sink. The gas ducts extend, over at least part of their length, along the support structure.Type: ApplicationFiled: February 4, 2022Publication date: April 18, 2024Applicant: Scrona AGInventors: Julian SCHNEIDER, Martin SCHMID, Patrick GALLIKER
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Publication number: 20240059064Abstract: The electrohydrodynamic print head comprises a nozzle carrier with a plurality of nozzles arranged thereon. A plurality of electrodes associated with the nozzles are located on the front side of the nozzles. A support structure supporting the electrodes is located on the nozzle carrier and comprises a plurality of support elements arranged between the nozzles. Ink retainers are arranged between the nozzles and the support elements. The front surfaces of the ink retainers are located behind the front ends of the nozzles in order to prevent the nozzles from being submerged by ink. Guard electrodes can be provided between the ejection electrodes and the ink retainers to reduce the electrical fields at the ink retainers and thereby to improve their efficiency to pin the ink. Suction ducts surrounding each nozzle allow to remove ink from the nozzles.Type: ApplicationFiled: January 14, 2021Publication date: February 22, 2024Applicant: Scrona AGInventors: Martin SCHMID, Julian SCHNEIDER, Patrick GALLIKER
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Optically transparent conductor assembly with electrical tracks and touch sensor comprising the same
Patent number: 11875004Abstract: A touch sensor has a first and a second set of tracks arranged on a substrate. The tracks have a small width of less than 10 micrometers that renders them invisible to the naked eye. At the same time, neighboring parallel tracks are located at less than 200 micrometers from each other for macroscopic uniformity. The two sets of tracks may include interrupted tracks to reduce mutual capacitance and to increase sensitivity. The tracks can be meandering for optical anisotropy. The touch sensor can be manufactured using electrohydrodynamic ejection printing.Type: GrantFiled: February 20, 2019Date of Patent: January 16, 2024Assignee: Scrona AGInventor: Patrick Galliker -
Patent number: 11840084Abstract: The print head includes a nozzle layer with a plurality of nozzles for printing ink onto a target. It further includes ventilation openings including blow openings for feeding a gas to the region between the nozzles and the target as well as suction openings for feeding gas away from this region. This allows maintaining a desired atmosphere at the region in order to better control the printing process.Type: GrantFiled: June 22, 2020Date of Patent: December 12, 2023Assignee: SCRONA AGInventor: Patrick Galliker
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Patent number: 11738558Abstract: The electrohydrodynamic print head comprises a plurality of nozzles. Each nozzle has a central nozzle duct laterally surrounded by a nozzle wall. The top end of the nozzle duct communicates with an ink feed duct. An annular trench laterally surrounds the nozzle. An extraction electrode is located around the axis of the nozzle at a level below it, and a shaping electrode located laterally outside the nozzle duct. The shaping electrode is arranged within a ring having a horizontal width of less than the vertical distance between said shaping electrode and the extraction electrode or it is located above the trench. Both these measures allow to operate the device with high voltages with reduced risk of electrical breakdown.Type: GrantFiled: September 18, 2019Date of Patent: August 29, 2023Assignee: SCRONA AGInventor: Patrick Galliker
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Publication number: 20220410569Abstract: An electrohydrodynamic print head has a plurality of nozzles arranged in a plurality of wells. Extraction electrodes are located around the wells at a level below the nozzles. Further, shielding electrodes are located around the wells at a level below the extraction electrodes. For each well, there are several such shielding electrodes located at different angular positions. This allows to use the shielding electrodes for laterally deflecting the ink after its ejection from the nozzles.Type: ApplicationFiled: November 11, 2019Publication date: December 29, 2022Applicant: Scrona AGInventor: Patrick GALLIKER
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Publication number: 20220363059Abstract: The electrohydrodynamic print head comprises a plurality of nozzles. Each nozzle has a central nozzle duct laterally surrounded by a nozzle wall. The top end of the nozzle duct communicates with an ink feed duct. An annular trench laterally surrounds the nozzle. An extraction electrode is located around the axis of the nozzle at a level below it, and a shaping electrode located laterally outside the nozzle duct. The shaping electrode is arranged within a ring having a horizontal width of less than the vertical distance between said shaping electrode and the extraction electrode or it is located above the trench. Both these measures allow to operate the device with high voltages with reduced risk of electrical breakdown.Type: ApplicationFiled: September 18, 2019Publication date: November 17, 2022Applicant: Scrona AGInventor: Patrick GALLIKER
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Publication number: 20220242116Abstract: The electrohydrodynamic print head includes a nozzle layer with a plurality of nozzles A feed layer is arranged above nozzle layer. It contains feed ducts for feeding ink to the nozzles as well as electrically conducting feed lines for feeding voltages to electrodes at nozzles. The feed layer includes one or more dielectric sublayers, which is/are structured to form the feed ducts and feed lines. Some of the sublayers contain vertical via sections and others contain horizontal interconnect sections. The feed layer is structured for customizing the print head easily.Type: ApplicationFiled: July 17, 2019Publication date: August 4, 2022Applicant: Scrona AGInventor: Patrick GALLIKER
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Publication number: 20220242118Abstract: The print head includes a nozzle layer with a plurality of nozzles for printing ink onto a target. It further includes ventilation openings including blow openings for feeding a gas to the region between the nozzles and the target as well as suction openings for feeding gas away from this region. This allows maintaining a desired atmosphere at the region in order to better control the printing process.Type: ApplicationFiled: June 22, 2020Publication date: August 4, 2022Applicant: Scrona AGInventor: Patrick GALLIKER
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OPTICALLY TRANSPARENT CONDUCTOR ASSEMBLY WITH ELECTRICAL TRACKS AND TOUCH SENSOR COMPRISING THE SAME
Publication number: 20220206637Abstract: A touch sensor has a first and a second set of tracks arranged on a substrate. The tracks have a small width of less than 10 micrometers that renders them invisible to the naked eye. At the same time, neighboring parallel tracks are located at less than 200 micrometers from each other for macroscopic uniformity. The two sets of tracks may include interrupted tracks to reduce mutual capacitance and to increase sensitivity. The tracks can be meandering for optical anisotropy. The touch sensor can be manufactured using electrohydrodynamic ejection printing.Type: ApplicationFiled: February 20, 2019Publication date: June 30, 2022Applicant: Scrona AGInventor: Patrick GALLIKER