Patents Assigned to Xjet Ltd
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Publication number: 20190232696Abstract: 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: ApplicationFiled: January 30, 2019Publication date: August 1, 2019Applicant: XJET LTD.Inventors: Eliahu M. KRITCHMAN, Hanan GOTHAIT, Yigal ROZVAL, MEIR DEBI
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Patent number: 10315427Abstract: 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: September 26, 2016Date of Patent: June 11, 2019Assignee: XJET LTD.Inventors: Eliahu M. Kritchman, Ronen Mimon, Hanan Gothait
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Patent number: 10232655Abstract: 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: April 18, 2016Date of Patent: March 19, 2019Assignee: XJET LTD.Inventors: Eliahu M. Kritchman, Hanan Gothait, Yigal Rozval, Meir Debi
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Publication number: 20180324959Abstract: A method of printing is provided where printing is using a first printing unit having redundant nozzles. Then, the method may include stopping the printing with the first printing unit while continuing the printing with active nozzles of a second printing unit. The method may include inspecting the first printing unit and identifying faulty nozzles, then designating the faulty nozzles as inactive and designating inactive nozzles of the first printing unit as a new active nozzle. According to some embodiments the method may include moving the first printing unit to an inspection zone prior to inspecting while continuing the printing with active nozzles of a second printing unit and moving the first printing unit back to the printing zone after inspection and continuing the printing with the first printing unit.Type: ApplicationFiled: June 29, 2018Publication date: November 8, 2018Applicant: XJET LTD.Inventors: Hanan GOTHAIT, Ran Asher PELEG, Ofir BAHARAV
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Publication number: 20180323070Abstract: Embodiments of the invention are directed to a method of printing lines. A method may include positioning a plurality of print units according to a predefined spacing parameter. A method may include depositing material on a substrate by a plurality of print units to form a respective plurality of parallel lines according to a predefined spacing parameter. A printing unit may be positioned at an angle with respect to a predefined scan direction such that a predefined width of a printed line is achieved. A substrate may be rotated between scans such that a plurality of lines in a respective plurality of directions is printed in a scan direction.Type: ApplicationFiled: June 29, 2018Publication date: November 8, 2018Applicant: XJET LTD.Inventors: Michael DOVRAT, Ran Asher PELEG, Amir HADAR, Hanan GOTHAIT
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Publication number: 20180264731Abstract: The present disclosure provides additive manufacturing apparatuses and maintenance methods. For example, in one embodiment an additive manufacturing apparatus is provided. The apparatus includes a reservoir configured to contain additive manufacturing material and a supply conduit for interconnecting the reservoir with a print head. The apparatus further includes a regulator configured to control pressure of additive manufacturing material in the print head to trigger purging of the print head and an air-ink separator configured to receive a mixture of air and purged additive manufacturing material. The air-ink separator is configured to reclaim at least a portion of the additive manufacturing material from the mixture.Type: ApplicationFiled: March 14, 2018Publication date: September 20, 2018Applicant: XJET LTD.Inventors: Eliahu Kritchman, Hanan GOTHAIT, Timofey SHMAL, Shlomo YITZHAIK
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Patent number: 10034392Abstract: A method of printing is provided where printing is using a first printing unit having redundant nozzles. Then, the method may include stopping the printing with the first printing unit while continuing the printing with active nozzles of a second printing unit. The method may include inspecting the first printing unit and identifying faulty nozzles, then designating the faulty nozzles as inactive and designating inactive nozzles of the first printing unit as a new active nozzle. According to some embodiments the method may include moving the first printing unit to an inspection zone prior to inspecting while continuing the printing with active nozzles of a second printing unit and moving the first printing unit back to the printing zone after inspection and continuing the printing with the first printing unit.Type: GrantFiled: October 19, 2015Date of Patent: July 24, 2018Assignee: XJET LTDInventors: Hanan Gothait, Ran Asher Peleg, Ofir Baharav
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Patent number: 10026617Abstract: Embodiments of the invention are directed to a method of printing lines. A method may include positioning a plurality of print units according to a predefined spacing parameter. A method may include depositing material on a substrate by a plurality of print units to form a respective plurality of parallel lines according to a predefined spacing parameter. A printing unit may be positioned at an angle with respect to a predefined scan direction such that a predefined width of a printed line is achieved. A substrate may be rotated between scans such that a plurality of lines in a respective plurality of directions is printed in a scan direction.Type: GrantFiled: May 26, 2016Date of Patent: July 17, 2018Assignee: XJET LTDInventors: Michael Dovrat, Ran Asher Peleg, Amir Hadar, Hanan Gothait
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Publication number: 20180037763Abstract: 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: February 16, 2016Publication date: February 8, 2018Applicant: Xjet Ltd.Inventors: Axel BENICHOU, Sven RÜHLE, Tali AQUA
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Publication number: 20170095980Abstract: 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: September 26, 2016Publication date: April 6, 2017Applicant: XJET LTD.Inventors: Eliahu M. KRITCHMAN, Ronen MIMON, Hanan GOTHAIT
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Patent number: 9481178Abstract: 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: June 29, 2014Date of Patent: November 1, 2016Assignee: XJET LTDInventors: Eli Kritchman, Ronen Mimon, Hanan Gothait
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Publication number: 20160307760Abstract: Embodiments of the invention are directed to a method of printing lines. A method may include positioning a plurality of print units according to a predefined spacing parameter. A method may include depositing material on a substrate by a plurality of print units to form a respective plurality of parallel lines according to a predefined spacing parameter. A printing unit may be positioned at an angle with respect to a predefined scan direction such that a predefined width of a printed line is achieved. A substrate may be rotated between scans such that a plurality of lines in a respective plurality of directions is printed in a scan direction.Type: ApplicationFiled: May 26, 2016Publication date: October 20, 2016Applicant: XJET LTD.Inventors: Michael Dovrat, Ran Asher Peleg, Amir Hadar, Hanan Gothait
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Publication number: 20160243619Abstract: 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: October 17, 2014Publication date: August 25, 2016Applicant: XJET LTD.Inventors: Hanan GOTHAIT, Eli KRITCHMAN, Axel BENICHOU, Timofey SHMAL, Guy EYTAN, Wael SALALHA, Yohai DAYAGI, Oleg KODINETS, Lior LAVID
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Publication number: 20160236372Abstract: 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: October 17, 2014Publication date: August 18, 2016Applicant: XJET LTD.Inventors: Axel BENICHOU, Liat LAUFER
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Publication number: 20160229128Abstract: 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: ApplicationFiled: October 17, 2014Publication date: August 11, 2016Applicant: XJET LTD.Inventors: Yohai DAYAGI, Axel BENICHOU, Eli KRITCHMAN
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Publication number: 20160229209Abstract: 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: ApplicationFiled: April 18, 2016Publication date: August 11, 2016Applicant: XJET LTD.Inventors: Eliahu M. Kritchman, Hanan GOTHAIT, Yigal ROZVAL, Meir DEBI
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Publication number: 20160205787Abstract: A method of printing is provided where printing is using a first printing unit having redundant nozzles. Then, the method may include stopping the printing with the first printing unit while continuing the printing with active nozzles of a second printing unit. The method may include inspecting the first printing unit and identifying faulty nozzles, then designating the faulty nozzles as inactive and designating inactive nozzles of the first printing unit as a new active nozzle. According to some embodiments the method may include moving the first printing unit to an inspection zone prior to inspecting while continuing the printing with active nozzles of a second printing unit and moving the first printing unit back to the printing zone after inspection and continuing the printing with the first printing unit.Type: ApplicationFiled: October 19, 2015Publication date: July 14, 2016Applicant: XJET LTD.Inventors: Hanan GOTHAIT, Ran Asher PELEG, Ofir BAHARAV
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Patent number: 9381759Abstract: Embodiments of the invention are directed to a method of printing lines. A method may include positioning a plurality of print units according to a predefined spacing parameter. A method may include depositing material on a substrate by a plurality of print units to form a respective plurality of parallel lines according to a predefined spacing parameter. A printing unit may be positioned at an angle with respect to a predefined scan direction such that a predefined width of a printed line is achieved. A substrate may be rotated between scans such that a plurality of lines in a respective plurality of directions is printed in a scan direction.Type: GrantFiled: November 30, 2009Date of Patent: July 5, 2016Assignee: XJET LTDInventors: Michael Dovrat, Ran Asher Peleg, Amir Hadar, Hanan Gothait
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Patent number: 9340016Abstract: 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: May 17, 2010Date of Patent: May 17, 2016Assignee: XJET LTDInventors: Eliahu M. Kritchman, Hanan Gothait, Yigal Rozval, Meir Debi
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Patent number: 9193164Abstract: 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 shape 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 the purged ink.Type: GrantFiled: October 18, 2011Date of Patent: November 24, 2015Assignee: XJET LTD.Inventors: Eli Kritchman, Hanan Gothait, Timofey Shmal, Sharon Fima