Patents by Inventor Kanshi Abe
Kanshi Abe 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: 9815285Abstract: A liquid discharge head includes a channel plate. The channel plate includes a fluid restrictor, a channel, a first plate member, and a second plate member. The channel is disposed on at least one of an upstream side and a downstream side of the fluid restrictor in a direction of flow of liquid. The channel has a greater width than a width of the fluid restrictor in a direction perpendicular to the direction of flow of liquid in an in-plane direction. The first plate member has a through hole including at least one broad portion and a narrow portion. The narrow portion is the fluid restrictor. The second plate member includes at least one through hole constituting part of the channel with the broad portion. The through hole is disposed opposite an end of the narrow portion at which the narrow portion is connected to the broad portion.Type: GrantFiled: November 22, 2016Date of Patent: November 14, 2017Assignee: RICOH COMPANY, LTD.Inventors: Yukio Otome, Takahiro Yoshida, Takayuki Nakai, Shiomi Andou, Kanshi Abe, Kenshiroh Munetomo, Toshimichi Odaka
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Publication number: 20170297333Abstract: A liquid discharging head includes: a nozzle plate having a plurality of nozzles from which liquid is discharged; a channel member including a plurality of individual liquid chambers that lead to the plurality of nozzles, respectively, and including a plurality of circulation channels that lead to the plurality of individual liquid chambers, respectively; and a common liquid chamber member for forming a common liquid chamber that supplies liquid to the plurality of individual liquid chambers and for forming a circulation common liquid chamber that leads to the plurality of circulation channels.Type: ApplicationFiled: June 30, 2017Publication date: October 19, 2017Applicant: Ricoh Company, Ltd.Inventors: Tomohiko KOHDA, Takahiro YOSHIDA, Shiomi ANDOU, Takayuki NAKAI, Kanshi ABE, Takeshi SHIMIZU, Ryo KASAHARA
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Publication number: 20170157924Abstract: A liquid discharge head includes a channel plate. The channel plate includes a fluid restrictor, a channel, a first plate member, and a second plate member. The channel is disposed on at least one of an upstream side and a downstream side of the fluid restrictor in a direction of flow of liquid. The channel has a greater width than a width of the fluid restrictor in a direction perpendicular to the direction of flow of liquid in an in-plane direction. The first plate member has a through hole including at least one broad portion and a narrow portion. The narrow portion is the fluid restrictor. The second plate member includes at least one through hole constituting part of the channel with the broad portion. The through hole is disposed opposite an end of the narrow portion at which the narrow portion is connected to the broad portion.Type: ApplicationFiled: November 22, 2016Publication date: June 8, 2017Applicant: RICOH COMPANY, LTD.Inventors: Yukio OTOME, Takahiro YOSHIDA, Takayuki NAKAI, Shiomi ANDOU, Kanshi ABE, Kenshiroh MUNETOMO, Toshimichi ODAKA
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Publication number: 20170120602Abstract: A droplet discharge head includes a plurality of discharge orifices, a plurality of pressure generation chambers, a supply liquid chamber, a plurality of supply channels, a circulation liquid chamber, and a plurality of circulation channels. The discharge orifices discharge droplets. The pressure generation chambers are communicated with the discharge orifices, to apply pressure to liquid in the pressure generation chambers. The supply liquid chamber stores liquid to be supplied to the pressure generation chambers. The supply channels are communicated with the pressure generation chambers. The circulation liquid chamber receives liquid collected from the pressure generation chambers. The circulation channels communicate the pressure generation chambers with the circulation liquid chamber.Type: ApplicationFiled: October 25, 2016Publication date: May 4, 2017Applicant: RICOH COMPANY, LTD.Inventors: Takayuki NAKAI, Takahiro YOSHIDA, Shiomi ANDOU, Toshimichi ODAKA, Kanshi ABE
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Patent number: 9427968Abstract: A liquid discharge head includes a nozzle plate having nozzles arrayed to discharge liquid droplets; a passage plate to form individual liquid chambers communicating with the respective nozzles; and a wall surface member to form a wall surface of the individual liquid chambers. The passage plate is formed with at least three plate-shaped members stacked and bonded by an adhesive. The nozzle plate and one plate-shaped member, and another plate-shaped member and the wall surface member are bonded, respectively. The three plate-shaped members include separation wall parts forming separation walls between the individual liquid chambers. At least one of the three plate-shaped members has a separation wall width different from that of the others, to have fillets of the forced-out adhesive formed between the wall surfaces, and surfaces of the plate-shaped members, the nozzle plate, or the wall surface member.Type: GrantFiled: September 10, 2015Date of Patent: August 30, 2016Assignee: RICOH COMPANY, LTD.Inventors: Tomohiko Kohda, Takeshi Shimizu, Ryo Kasahara, Kanshi Abe, Takayuki Nakai, Takahiro Yoshida, Shiomi Andou
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Publication number: 20160185113Abstract: A liquid ejection head is provided. The liquid ejection head includes at least two nozzle lines configured to have a plurality of nozzles for ejecting liquid disposed in respective lines, a plurality of individual liquid chambers configured to be in communication with corresponding nozzles of the nozzle lines, and at least two circulation channels corresponding to the nozzle lines, configured to be in communication with the individual liquid chambers. The at least two circulation channels are in communication with each other through a bridging channel disposed in a direction intersecting with the nozzle line direction, and the bridging channel and the circulation channels are disposed at different positions in a thickness direction of a member which forms the bridging channel and the circulation channels.Type: ApplicationFiled: December 21, 2015Publication date: June 30, 2016Applicant: RICOH COMPANY, LTD.Inventors: Takahiro Yoshida, Tomohiko Kohda, Takeshi Shimizu, Kanshi Abe, Ryo Kasahara, Takayuki Nakai, Shiomi Andou
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Patent number: 9375925Abstract: A disclosed liquid-ejection head for ejecting liquid droplets includes a substrate having a diaphragm forming a part of walls of a pressure liquid chamber, and a piezoelectric element adhered to the substrate with adhesive, and configured to apply pressure to the pressure liquid chamber via the diaphragm. The piezoelectric element has a surface facing the substrate having the diaphragm, and the surface has one or more projection parts in an area in which the pressure liquid chamber is not disposed, and whereon the substrate having the diaphragm has one or more recess parts that fit in the respective projection parts.Type: GrantFiled: September 16, 2015Date of Patent: June 28, 2016Assignee: RICOH COMPANY, LTD.Inventors: Takeshi Shimizu, Tomohiko Kohda, Takahiro Yoshida, Kanshi Abe, Shiomi Andou, Takayuki Nakai, Ryo Kasahara
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Publication number: 20160096369Abstract: A disclosed liquid-ejection head for ejecting liquid droplets includes a substrate having a diaphragm forming a part of walls of a pressure liquid chamber, and a piezoelectric element adhered to the substrate with adhesive, and configured to apply pressure to the pressure liquid chamber via the diaphragm. The piezoelectric element has a surface facing the substrate having the diaphragm, and the surface has one or more projection parts in an area in which the pressure liquid chamber is not disposed, and whereon the substrate having the diaphragm has one or more recess parts that fit in the respective projection parts.Type: ApplicationFiled: September 16, 2015Publication date: April 7, 2016Applicant: RICOH COMPANY, LTD.Inventors: Takeshi SHIMIZU, Tomohiko KOHDA, Takahiro YOSHIDA, Kanshi ABE, Shiomi ANDOU, Takayuki NAKAI, Ryo KASAHARA
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Publication number: 20160082728Abstract: A liquid discharge head includes a nozzle plate having nozzles arrayed to discharge liquid droplets; a passage plate to form individual liquid chambers communicating with the respective nozzles; and a wall surface member to form a wall surface of the individual liquid chambers. The passage plate is formed with at least three plate-shaped members stacked and bonded by an adhesive. The nozzle plate and one plate-shaped member, and another plate-shaped member and the wall surface member are bonded, respectively. The three plate-shaped members include separation wall parts forming separation walls between the individual liquid chambers. At least one of the three plate-shaped members has a separation wall width different from that of the others, to have fillets of the forced-out adhesive formed between the wall surfaces, and surfaces of the plate-shaped members, the nozzle plate, or the wall surface member.Type: ApplicationFiled: September 10, 2015Publication date: March 24, 2016Applicant: RICOH COMPANY, LTD.Inventors: Tomohiko Kohda, Takeshi SHIMIZU, Ryo KASAHARA, Kanshi ABE, Takayuki NAKAI, Takahiro YOSHIDA, Shiomi ANDOU
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Patent number: 9196821Abstract: An electromechanical transducer includes a first electrode mounted on one of a substrate and a base film, an electromechanical transducer film mounted on the first electrode and made of a piezoelectric substance having a perovskite crystal structure, and a second electrode mounted on the electromechanical transducer film. The electromechanical transducer film includes a {100} plane preferentially oriented to be orthogonal to a thickness direction of the electromechanical transducer film and has a full width at half maximum corresponding to a {200} plane in an X-ray diffraction measurement curve in 2?-? scan that is measured by emitting an X-ray beam onto a surface of the electromechanical transducer film at an incident angle ?. The full width at half maximum is not greater than 10 degrees.Type: GrantFiled: July 2, 2014Date of Patent: November 24, 2015Assignee: RICOH COMPANY, LTD.Inventors: Tsutoh Aoyama, Masaru Shinkai, Masahiro Ishimori, Keiji Ueda, Kanshi Abe, Manabu Nishimura, Toshiaki Masuda
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Publication number: 20150022592Abstract: An electromechanical transducer includes a first electrode mounted on one of a substrate and a base film, an electromechanical transducer film mounted on the first electrode and made of a piezoelectric substance having a perovskite crystal structure, and a second electrode mounted on the electromechanical transducer film. The electromechanical transducer film includes a {100} plane preferentially oriented to be orthogonal to a thickness direction of the electromechanical transducer film and has a full width at half maximum corresponding to a {200} plane in an X-ray diffraction measurement curve in 2?-? scan that is measured by emitting an X-ray beam onto a surface of the electromechanical transducer film at an incident angle ?. The full width at half maximum is not greater than 10 degrees.Type: ApplicationFiled: July 2, 2014Publication date: January 22, 2015Applicant: RICOH COMPANY, LTD.Inventors: Tsutoh Aoyama, Masaru Shinkai, Masahiro Ishimori, Keiji Ueda, Kanshi Abe, Manabu Nishimura, Toshiaki Masuda
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Patent number: 8919926Abstract: A disclosed inkjet head includes a liquid chamber formed by a space between a vibrating plate and a nozzle substrate and separated by partitions; a piezoelectric element formed by sequentially laminating a common electrode, a piezoelectric substance and an individual electrode over the space; first to fourth insulating films respectively having first to fourth openings; and a first wiring connected to the individual electrode and pulled through the first and second openings over the common electrode, wherein the first wiring passes through the third opening over the third insulating film, the first wiring is exposed from the fourth opening so as to be externally connected, and the third insulating film and the fourth insulating film are not partly formed above the liquid chamber and formed above the first wiring.Type: GrantFiled: February 29, 2012Date of Patent: December 30, 2014Assignee: Ricoh Company, Ltd.Inventors: Satoshi Mizukami, Masaki Kato, Takahiko Kuroda, Yoshikazu Akiyama, Kanshi Abe
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Patent number: 8727505Abstract: Disclosed is an electromechanical transducer element that includes an electromechanical transducer film formed of a complex oxide (PZT) including lead (Pb), zirconium (Zr), and titanium (Ti). The electromechanical transducer film is formed by laminating plural PZT thin films until a thickness of the formed electromechanical transducer film becomes a predetermined thickness. When an atomic weight ratio (Pb/(Zr+Ti)) of average Pb included in the formed electromechanical transducer film is denoted by Pb(avg) and an atomic weight ratio (Pb/(Zr+Ti)) of Pb in any one of laminate interfaces of the plural PZT thin films is denoted by Pb(interface), the Pb(avg) is greater than or equal to 100 atomic percentage (at %) and less than or equal to 110 atomic percentage (at %), and a fluctuation ratio ?Pb=Pb(avg)?Pb(interface) of Pb in the laminate interface is less than or equal to 20 percent.Type: GrantFiled: June 21, 2012Date of Patent: May 20, 2014Assignee: Ricoh Company, Ltd.Inventors: Satoshi Mizukami, Yoshikazu Akiyama, Masaru Shinkai, Keiji Ueda, Kanshi Abe, Takakazu Kihira, Naoya Kondo
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Patent number: 8602530Abstract: An ink-jet head includes a nozzle plate having nozzles, a vibrating plate on the nozzle plate, liquid chambers formed of spaces partitioned by division walls, a piezoelectric element having a common electrode, a piezoelectric body and an individual electrode layered in this order on a surface of the vibrating plate, a first insulator film having a first opening and a second insulator film having a second opening layered in this order on the first surface, a first wire drawn from the individual electrode via the first opening and the second opening, a third insulator film having a third opening on the first wire; and a second wire drawn via the third opening, where the third insulator film is formed in a first region of the second insulator film and is not formed in a second region excluding a region including the first wire formed above the liquid chamber.Type: GrantFiled: February 15, 2012Date of Patent: December 10, 2013Assignee: Ricoh Company, Ltd.Inventors: Satoshi Mizukami, Masaki Kato, Takahiko Kuroda, Yoshikazu Akiyama, Kanshi Abe
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Patent number: 8454133Abstract: An inkjet head is disclosed. In the inkjet head a vibrating plate is formed on a liquid chamber substrate on which multiple dedicated liquid chambers are aligned; a first insulating film and a second insulating film are formed between a dedicated electrode wiring and a lower electrode in an area in which the dedicated electrode wiring and the lower electrode overlap; a third insulating film and a fourth insulating film are stacked in an area which includes a forming area of the dedicated electrode wiring; in at least a portion of a forming area of the dedicated liquid chamber, there is provided a non-film forming area; and, in an area including a piezoelectric element forming section, either the first insulating film and the fourth insulating film are formed in the non-film forming area, or the fourth insulating film is formed in the non-film forming area.Type: GrantFiled: March 16, 2012Date of Patent: June 4, 2013Assignee: Ricoh Company, Ltd.Inventors: Satoshi Mizukami, Masaki Kato, Takahiko Kuroda, Kanshi Abe, Yoshikazu Akiyama
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Publication number: 20130002767Abstract: Disclosed is an electromechanical transducer element that includes an electromechanical transducer film formed of a complex oxide (PZT) including lead (Pb), zirconium (Zr), and titanium (Ti). The electromechanical transducer film is formed by laminating plural PZT thin films until a thickness of the formed electromechanical transducer film becomes a predetermined thickness. When an atomic weight ratio (Pb/(Zr+Ti)) of average Pb included in the formed electromechanical transducer film is denoted by Pb(avg) and an atomic weight ratio (Pb/(Zr+Ti)) of Pb in any one of laminate interfaces of the plural PZT thin films is denoted by Pb(interface), the Pb(avg) is greater than or equal to 100 atomic percentage (at %) and less than or equal to 110 atomic percentage (at %), and a fluctuation ratio ?Pb=Pb(avg)?Pb(interface) of Pb in the laminate interface is less than or equal to 20 percent.Type: ApplicationFiled: June 21, 2012Publication date: January 3, 2013Applicant: RICOH COMPANY, LTD.,Inventors: Satoshi MIZUKAMI, Yoshikazu AKIYAMA, Masaru SHINKAI, Keiji UEDA, Kanshi ABE, Takakazu KIHIRA, Naoya KONDO
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Publication number: 20120236083Abstract: An inkjet head is disclosed. In the inkjet head a vibrating plate is formed on a liquid chamber substrate on which multiple dedicated liquid chambers are aligned; a first insulating film and a second insulating film are formed between a dedicated electrode wiring and a lower electrode in an area in which the dedicated electrode wiring and the lower electrode overlap; a third insulating film and a fourth insulating film are stacked in an area which includes a forming area of the dedicated electrode wiring; in at least a portion of a forming area of the dedicated liquid chamber, there is provided a non-film forming area; and, in an area including a piezoelectric element forming section, either the first insulating film and the fourth insulating film are formed in the non-film forming area, or the fourth insulating film is formed in the non-film forming area.Type: ApplicationFiled: March 16, 2012Publication date: September 20, 2012Applicant: RICOH COMPANY, LTD.Inventors: Satoshi MIZUKAMI, Masaki Kato, Takahiko Kuroda, Kanshi Abe, Yoshikazu Akiyama
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Publication number: 20120229573Abstract: A disclosed inkjet head includes a liquid chamber formed by a space between a vibrating plate and a nozzle substrate and separated by partitions; a piezoelectric element formed by sequentially laminating a common electrode, a piezoelectric substance and an individual electrode over the space; first to fourth insulating films respectively having first to fourth openings; and a first wiring connected to the individual electrode and pulled through the first and second openings over the common electrode, wherein the first wiring passes through the third opening over the third insulating film, the first wiring is exposed from the fourth opening so as to be externally connected, and the third insulating film and the fourth insulating film are not partly formed above the liquid chamber and formed above the first wiring.Type: ApplicationFiled: February 29, 2012Publication date: September 13, 2012Applicant: RICOH COMPANY, LTD.Inventors: Satoshi MIZUKAMI, Masaki Kato, Takahiko Kuroda, Yoshikazu Akiyama, Kanshi Abe
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Publication number: 20120212545Abstract: An ink-jet head includes a nozzle plate having nozzles, a vibrating plate on the nozzle plate, liquid chambers formed of spaces partitioned by division walls, a piezoelectric element having a common electrode, a piezoelectric body and an individual electrode layered in this order on a surface of the vibrating plate, a first insulator film having a first opening and a second insulator film having a second opening layered in this order on the first surface, a first wire drawn from the individual electrode via the first opening and the second opening, a third insulator film having a third opening on the first wire; and a second wire drawn via the third opening, where the third insulator film is formed in a first region of the second insulator film and is not formed in a second region excluding a region including the first wire formed above the liquid chamber.Type: ApplicationFiled: February 15, 2012Publication date: August 23, 2012Applicant: RICOH COMPANY, LTD.Inventors: Satoshi MIZUKAMI, Masaki Kato, Takahiko Kuroda, Yoshikazu Akiyama, Kanshi Abe
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Publication number: 20090153607Abstract: A liquid ejecting head includes diffusion layers provided in areas opposing pressure generation chambers by doping impurities into a portion of a channel forming substrate, a detecting portion which detects variations in resistance values of the diffusion layers due to the deformation of vibration plates, and an adjustment portion which adjusts driving voltages applied to pressure generation elements on the basis of the detected result of the detecting portion. Accordingly, it is possible to acquire the displacement amounts of the vibration plates due to the driving of the pressure generation elements, by detecting the variations in resistance values of the diffusion layers due to the deformation of the vibration plates.Type: ApplicationFiled: December 4, 2008Publication date: June 18, 2009Applicant: SEIKO EPSON CORPORATIONInventor: Kanshi Abe