Patents Assigned to Xjet Ltd
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Patent number: 11884008Abstract: A system for forming a product with different size particles is disclosed. The system comprises at least one print head region configured to retain a first group of print heads configurable to additively print at least a first portion of the product with a first material and a second group of print heads configurable to additively print at least a second portion of the product with a second material. The described system may also comprise a processor configured to regulate the first group of print heads and the second group of print heads to distribute the first material and the second material. A method of making an object by ink jet printing using the disclosed system is also disclosed.Type: GrantFiled: November 8, 2022Date of Patent: January 30, 2024Assignee: XJET LTD.Inventors: Eli Kritchman, Wael Salalha, Tali Aqua, Tal Sela, Axel Benichou, Doron Avramov, Yohai Dayagi
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Patent number: 11753559Abstract: Ti ink compositions for printing, such as ink jet printing, are disclosed. The ink compositions comprise a liquid dispersion of Ti hydride powder having a mean particle size of less than 10.0 microns; a liquid carrier, and at least one surfactant. Methods of making and using the disclosed inks are also disclosed. For example, a finished Ti product can be produced by printing the disclosed ink composition, such as by ink jet printing, to form a green article, heating the green article to dehydrogenate it and form a Ti containing part. The method may further comprise sintering the Ti containing part to produce a sintered Ti product. In an embodiment, the method comprises printing one or more support materials for the ink composition, that comprises solid particles of a metal oxide, a metal carbide, a metal nitride, a polymer, or combinations thereof.Type: GrantFiled: May 17, 2021Date of Patent: September 12, 2023Assignee: XJET LTD.Inventors: Axel Benichou, Sven Rühle, Tali Aqua
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Publication number: 20230158739Abstract: A system for forming a product with different size particles is disclosed. The system comprises at least one print head region configured to retain a first group of print heads configurable to additively print at least a first portion of the product with a first material and a second group of print heads configurable to additively print at least a second portion of the product with a second material. The described system may also comprise a processor configured to regulate the first group of print heads and the second group of print heads to distribute the first material and the second material. A method of making an object by ink jet printing using the disclosed system is also disclosed.Type: ApplicationFiled: November 8, 2022Publication date: May 25, 2023Applicant: XJET LTD.Inventors: Eli KRITCHMAN, Wael SALALHA, Tali AQUA, Tal SELA, Axel BENICHOU, Doron AVRAMOV, Yohai DAYAGI
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Patent number: 11623280Abstract: An ink composition for use as a support ink in three dimensional (3D) printing processes comprises a dispersion of solid particles in liquid carder, compatible with an inkjet print head, wherein after removing the liquid carder, the solid particles serve as support material for a Three Dimensional (3D) printed object, wherein the support material is separable from the 3D printed object.Type: GrantFiled: July 7, 2020Date of Patent: April 11, 2023Assignee: XJET LTD.Inventors: Yohai Dayagi, Axel Benichou, Eli Kritchman
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Publication number: 20210370400Abstract: There is disclosed an ink composition for three dimensional (3D) printing. The ink composition comprises: a liquid dispersion of tungsten carbide (WC) particles and cobalt (Co) particles, and, a carrier vehicle for the dispersion of tungsten carbide particles and the dispersion of cobalt particles. The ink composition is of a viscosity usable with ink jet print heads for 3D printing.Type: ApplicationFiled: January 8, 2021Publication date: December 2, 2021Applicant: XJET LTD.Inventors: Axel BENICHOU, Liat LAUFER
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Publication number: 20210363370Abstract: Ti ink compositions for printing, such as ink jet printing, are disclosed. The ink compositions comprise a liquid dispersion of Ti hydride powder having a mean particle size of less than 10.0 microns; a liquid carrier, and at least one surfactant. Methods of making and using the disclosed inks are also disclosed. For example, a finished Ti product can be produced by printing the disclosed ink composition, such as by ink jet printing, to form a green article, heating the green article to dehydrogenate it and form a Ti containing part. The method may further comprise sintering the Ti containing part to produce a sintered Ti product. In an embodiment, the method comprises printing one or more support materials for the ink composition, that comprises solid particles of a metal oxide, a metal carbide, a metal nitride, a polymer, or combinations thereof.Type: ApplicationFiled: May 17, 2021Publication date: November 25, 2021Applicant: Xjet Ltd.Inventors: Axel BENICHOU, Sven RÜHLE, Tali AQUA
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Publication number: 20210354365Abstract: 3D (three-dimensional) ink-jet printing includes techniques for evaporating a carrier liquid during printing while at least a portion of dispersant remains in the printed layer; evaporating dispersant in a first layer prior to sintering the first layer and/or prior to printing a second layer; leveling an upper-layer of a printed object using a horizontal roller; and printing layers of an object, each layer with both object and support portions, resulting in an object with support, in particular, support for negative angles and molds.Type: ApplicationFiled: April 5, 2021Publication date: November 18, 2021Applicant: XJET LTD.Inventors: Eli KRITCHMAN, Nadav MORDECHAI, Igor GOFMAN, Alex DRUKMAN, Mark BAEVSKY, Denis DRAGUNOV, Tali AQUA, Eduardo NAPADENSKY, Yohai DAYAGI, Mubeen BAIDOSSI, Avi LEVY, Michael Pilavsky
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Patent number: 11104071Abstract: A printing head assembly with integrated purge mechanism is disclosed. The printing head assembly comprises: (a) a liquid dispensing head comprising one or more dispensing nozzles enclosed in a nozzle plate, driven by at least first and second pressures, and (b) a shielding mask including an opening in front of the one or more nozzles, wherein the opening being configured such that when printing liquid is dispensed from the head driven by the first pressure, the liquid being dispensed in pulses through the opening in the shielding mask, and (ii) when purge printing liquid is dispensed from the head driven by the second pressure, the liquid being drawn to a capillary gap formed between the shielding mask and the nozzle plate thereby removing the purge printing liquid from the nearby nozzles.Type: GrantFiled: April 22, 2019Date of Patent: August 31, 2021Assignee: XJET LTD.Inventors: Eliahu M. Kritchman, Ronen Mimon, Hanan Gothait
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Patent number: 11059984Abstract: Ti ink compositions for printing, such as ink jet printing, are disclosed. The ink compositions comprise a liquid dispersion of Ti hydride powder having a mean particle size of less than 10.0 microns; a liquid carrier; and at least one surfactant. Methods of making and using the disclosed inks are also disclosed. For example, a finished Ti product can be produced by printing the disclosed ink composition, such as by ink jet printing, to form a green article, heating the green article to dehydrogenate it and form a Ti containing part. The method may further comprise sintering the Ti containing part to produce a sintered Ti product. In an embodiment, the method comprises printing one or more support materials for the ink composition, that comprises solid particles of a metal oxide, a metal carbide, a metal nitride, a polymer, or combinations thereof.Type: GrantFiled: February 16, 2016Date of Patent: July 13, 2021Assignee: XJET LTD.Inventors: Axel Benichou, Sven Rühle, Tali Aqua
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Patent number: 11000897Abstract: An ink composition for use as a support ink in three dimensional (3D) printing processes comprises a dispersion of solid particles in liquid carrier, compatible with an inkjet print head, wherein after removing the liquid carrier, the solid particles serve as support material for a Three Dimensional (3D) printed object, wherein the support material is separable from the 3D printed object.Type: GrantFiled: October 17, 2014Date of Patent: May 11, 2021Assignee: XJET LTD.Inventors: Yohai Dayagi, Axel Benichou, Eli Kritchman
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Publication number: 20200398477Abstract: An apparatus and methods of additive manufacturing are provided. The apparatus may include at least one frame for supporting at least one print head configured to deposit fluidic additive manufacturing material layer by layer, at least one reservoir in communication with the at least one print head, the at least one reservoir being configured to contain the additive manufacturing material, a printing table including at least one printing region for supporting at least one removable substrate for printing at least one three-dimensional object, the at least one removable substrate is made from a material other than the additive manufacturing material, and at least one processor configured to: control a rotational movement between the at least one print head and the printing table; and control vertical movement between the at least one print head and the printing table.Type: ApplicationFiled: February 22, 2019Publication date: December 24, 2020Applicant: XJET LTD.Inventors: ELI KRITCHMAN, IGAL ZEITUN, MOSHE KOREN, NADAV MORDECHAI, NIR SADE, MOSHE MANOR
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Patent number: 10864737Abstract: Inkjet head cleaning and storage includes cleaning an orifice plate by inserting a tip of a shaped wiper into a slit of a printing mask, such that one or more shoulders of a handling end of the shaped wiper are in contact with respectively one or more edges of the slit. The shoulders of the shaped wiper facilitate the tip applying a predetermined pressure to an orifice surface during wiping. Preventing sediment buildup during extended periods of non-printing includes placing at least the orifice plate of the printing head in a protecting liquid that avoids evaporation of the volatile liquid from the nozzles. An innovative “night plate” can be used to seal the slit of a printing mask and ink purged from the printing head used to fill a gap between the printing head and the mask, thereby covering at least the orifice plate with purged ink.Type: GrantFiled: February 26, 2020Date of Patent: December 15, 2020Assignee: XJET LTD.Inventors: Eli Kritchman, Hanan Gothait, Timofey Shmal, Sharon Fima
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Publication number: 20200384536Abstract: An ink composition for use as a support ink in three dimensional (3D) printing processes comprises a dispersion of solid particles in liquid carder, compatible with an inkjet print head, wherein after removing the liquid carder, the solid particles serve as support material for a Three Dimensional (3D) printed object, wherein the support material is separable from the 3D printed object.Type: ApplicationFiled: July 7, 2020Publication date: December 10, 2020Applicant: XJET LTD.Inventors: Yohai DAYAGI, Axel BENICHOU, Eli KRITCHMAN
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Patent number: 10723156Abstract: A printing device for dispending material on a heated substrate is provided. The device may include a printing head having one or more nozzles and a heat shield that partially masks a side of the printing head that faces the heated substrate when printing so as to reduce heat transfer from the substrate to the printing head. The shield includes a slot aligned with the one or more nozzles to enable passage of material from the one or more nozzles to the heated substrate.Type: GrantFiled: January 30, 2019Date of Patent: July 28, 2020Assignee: XJET LTD.Inventors: Eliahu M. Kritchman, Hanan Gothait, Yigal Rozval, Meir Debi
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Publication number: 20200189282Abstract: Inkjet head cleaning and storage includes cleaning an orifice plate by inserting a tip of a shaped wiper into a slit of a printing mask, such that one or more shoulders of a handling end of the shaped wiper are in contact with respectively one or more edges of the slit. The shoulders of the shaped wiper facilitate the tip applying a predetermined pressure to an orifice surface during wiping. Preventing sediment buildup during extended periods of non-printing includes placing at least the orifice plate of the printing head in a protecting liquid that avoids evaporation of the volatile liquid from the nozzles. An innovative “night plate” can be used to seal the slit of a printing mask and ink purged from the printing head used to fill a gap between the printing head and the mask, thereby covering at least the orifice plate with purged ink.Type: ApplicationFiled: February 26, 2020Publication date: June 18, 2020Applicant: XJET LTD.Inventors: Eli KRITCHMAN, Hanan GOTHAIT, Timofey SHMAL, Sharon FIMA
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Patent number: 10611155Abstract: Printing systems are disclosed for preventing sediment buildup. In one implementation, a printing system is provided. The printing system includes a print area and a print head housing configured to enclose a print head spaced from the print area. The print head has a plurality of nozzles for expelling a printing liquid therefrom. The printing system further includes a pipe for interconnecting the print head with a reservoir, a pump for circulating the printing liquid from the reservoir to the print head and through the plurality of nozzles, and a processor. The processor may cause the pump to circulate the printing liquid to the print head and through the plurality of nozzles during a period of non-printing. In one embodiment, circulating the printing liquid includes flowing the printing liquid from the reservoir to the print head and from a retainer located below the plurality of nozzles back to the reservoir.Type: GrantFiled: October 18, 2015Date of Patent: April 7, 2020Assignee: XJET LTD.Inventors: Eli Kritchman, Hanan Gothait, Timofey Shmal, Sharon Fima
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Publication number: 20200047252Abstract: A system for forming a product with different size particles is disclosed. The system comprises at least one print head region configured to retain a first group of print heads configurable to additively print at least a first portion of the product with a first material and a second group of print heads configurable to additively print at least a second portion of the product with a second material. The described system may also comprise a processor configured to regulate the first group of print heads and the second group of print heads to distribute the first material and the second material. A method of making an object by ink jet printing using the disclosed system is also disclosed.Type: ApplicationFiled: April 18, 2018Publication date: February 13, 2020Applicant: XJET LTD.Inventors: Eli KRITCHMAN, Wael SALALHA, Tali AQUA, Tal SELA, Axel BENICHOU, Doron AVRAMOV, Yohai DAYAGI
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Publication number: 20200039263Abstract: A method for evaluating performance of a plurality of nozzles of a printing head includes repeatedly operating each of the nozzles to print test marks on a surface of a substrate, each of the test marks printed by that nozzle being printed at a different time. At least once during the repeated operation of each of the nozzles, at least some of the test marks are erased from the surface. The test marks that were printed by that nozzle are inspected for a feature that is indicative of the performance of that nozzle.Type: ApplicationFiled: October 15, 2019Publication date: February 6, 2020Applicant: XJET LTD.Inventors: Eliahu M. Kritchman, Timofey Shmal
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Patent number: 10479122Abstract: A method for evaluating performance of a plurality of nozzles of a printing head includes repeatedly operating each of the nozzles to print test marks on a surface of a substrate, each of the test marks printed by that nozzle being printed at a different time. At least once during the repeated operation of each of the nozzles, at least some of the test marks are erased from the surface. The test marks that were printed by that nozzle are inspected for a feature that is indicative of the performance of that nozzle.Type: GrantFiled: July 19, 2011Date of Patent: November 19, 2019Assignee: XJET LTD.Inventors: Eliahu M. Kritchman, Timofey Shmal
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Publication number: 20190248139Abstract: A printing head assembly with integrated purge mechanism is disclosed. The printing head assembly comprises: (a) a liquid dispensing head comprising one or more dispensing nozzles enclosed in a nozzle plate, driven by at least first and second pressures, and (b) a shielding mask including an opening in front of the one or more nozzles, wherein the opening being configured such that when printing liquid is dispensed from the head driven by the first pressure, the liquid being dispensed in pulses through the opening in the shielding mask, and (ii) when purge printing liquid is dispensed from the head driven by the second pressure, the liquid being drawn to a capillary gap formed between the shielding mask and the nozzle plate thereby removing the purge printing liquid from the nearby nozzles.Type: ApplicationFiled: April 22, 2019Publication date: August 15, 2019Applicant: XJET LTD.Inventors: Eliahu M. KRITCHMAN, Ronen MIMON, Hanan GOTHAIT