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公开(公告)号：US10457042B2
公开(公告)日：2019-10-29
申请号：US16118186
申请日：2018-08-30
Inventor： Shuhei Nakatani , Futoshi Ohtsuka , Yousuke Toyofuku
Abstract: An object of the disclosure is to provide an inkjet head that makes it possible to realize alleviation of ink-discharge malfunction due to fluid crosstalk possibly caused among multiple discharge components, and that also simultaneously makes it possible to maintain a desirable volume of discharged liquid droplets. Furthermore, another object of the disclosure is to provide an inkjet device including the inkjet head.
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Patent Agency Ranking
公开(公告)号：US11312136B2
公开(公告)日：2022-04-26
申请号：US17194416
申请日：2021-03-08
Inventor： Kazunobu Irie , Hidehiro Yoshida , Shuhei Nakatani , Futoshi Ohtsuka , Yousuke Toyofuku
Abstract: An ink jet head includes a piezoelectric element that is driven in a d33 mode, a pressure generation chamber in which a pressure is generated by the piezoelectric element, and an individual ink supply flow passage that through which the ink is supplied to the pressure generation chamber. The ink jet head includes an individual ink discharge flow passage that through which the ink is discharged from the pressure generation chamber, and a nozzle that ejects the ink from the pressure generation chamber. In a cross-sectional view in a direction orthogonal to an arrangement direction of the nozzle, inner diameters of the pressure generation chamber, the individual ink supply flow passage, and the individual ink discharge flow passage are shorter on a part close to the nozzle than a part close to the piezoelectric element side. Accordingly, an ink jet head capable of ejecting high-viscosity ink can be provided.
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公开(公告)号：US12005709B2
公开(公告)日：2024-06-11
申请号：US17883292
申请日：2022-08-08
Inventor： Shuhei Nakatani , Kazunobu Irie
IPC: B41J2/14
CPC classification number: B41J2/14233 , B41J2002/14241 , B41J2202/03 , B41J2202/11
Abstract: A liquid discharging head includes a nozzle configured to discharge liquid, a pressure chamber communicated with the nozzle, and an individual channel communicated with the pressure chamber through a narrow part. The liquid discharging head also includes a common channel communicated with the individual channel, an energy generation element configured to generate energy, and a diaphragm configured to convey the energy to the pressure chamber. A metal oxide film is formed at inner walls of the nozzle, the pressure chamber, the narrow part, the diaphragm, and the individual channel, and a hydroxyl group has come out from the metal oxide film.
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公开(公告)号：US11446929B2
公开(公告)日：2022-09-20
申请号：US17076257
申请日：2020-10-21
Inventor： Shuhei Nakatani , Kazunobu Irie
IPC: B41J2/14
Abstract: A liquid discharging head and an ink-jet apparatus that can achieve stable discharging over time by suppressing clogging of a nozzle due to particles and the like contained in liquid, and by suppressing adhesion of particles to a channel and a diaphragm surface. A liquid discharging head includes a nozzle configured to discharge liquid; a pressure chamber communicated with the nozzle; an individual channel communicated with the pressure chamber through a narrow part; a common channel communicated with the individual channel; an energy generation element configured to generate energy; and a diaphragm configured to convey the energy to the pressure chamber, wherein a monomolecular film is formed at inner walls of the nozzle, the pressure chamber, the narrow part, the diaphragm, and the individual channel, the monomolecular film being lyophilic to the liquid.
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公开(公告)号：US10369783B2
公开(公告)日：2019-08-06
申请号：US15886811
申请日：2018-02-01
Inventor： Kentaro Kumazawa , Shuhei Nakatani , Takao Nagumo , Takashi Inoue , Futoshi Ohtsuka
Abstract: A high precision printing method taking into consideration the variance in the thickness of a printing target. An ink-jet printing method, including: (i) measuring a distance between a printing target and at least one nozzle; (ii) measuring a flying speed and a flying angle of an ink(a) discharged from the at least one nozzle; (iii) printing a test substrate with an ink to identify a location on which an ink(b) is spotted, and calculating a thickness-related displacement that is a displacement from the location on which the ink is spotted, based on a thickness difference between the printing target and the test substrate from results obtained in Step (i), and the flying speed and the flying angle of the ink(a) obtained in Step (ii); and (iv) discharging an ink(c) from the at least one nozzle to achieve actual printing of the printing target with the ink(c) while correcting the thickness-related displacement.
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6.发明授权公开(公告)号：US10279369B2
公开(公告)日：2019-05-07
申请号：US15063697
申请日：2016-03-08
Inventor： Masayo Shinoda , Shuhei Nakatani , Kazuma Tsujita
IPC: B05C5/02 , B41J2/21 , A61Q1/02 , B05C13/02 , A61K8/02 , B41J3/407 , B41J11/06 , A45D44/00 , B44C1/10
Abstract: Printing apparatus includes: a printer (thin-film carrier, conveyer, and droplet discharger) printing on a thin film by discharging, while shifting thin film in first direction, droplets containing a functional component from a plurality of positions differing from each other in second direction; and a print uniformity controller (print controller and position switcher) performing the printing for a plurality of times, by using the printer and changing position and/or orientation of thin film relative to the plurality of positions.
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