Patents by Inventor Kazunari Chikanawa
Kazunari Chikanawa 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).
-
Publication number: 20170225480Abstract: An ink jet head includes a pressure chamber, a main flow path, an actuator, a nozzle, a first communication flow path, and a filter. The pressure chamber is filled with an ink. The main flow path supplies the ink to the pressure chamber. The actuator changes the pressure of the ink filled in the pressure chamber. The nozzle is connected to the pressure chamber and ejects the ink filled in the pressure chamber by driving of the actuator. The first communication flow path connects the pressure chamber to the main flow path. The filter is disposed at a predetermined position between the nozzle and the vicinity of a first boundary of the main flow path and the first communication flow path, and the filter captures an impurity in the ink which has a size larger than the diameter of the nozzle.Type: ApplicationFiled: January 19, 2017Publication date: August 10, 2017Inventors: TAKASHI HARUGUCHI, KAZUNARI CHIKANAWA, TAKAHISA KATO, HIDEAKI HORIO, SHINJI TANAKA
-
Patent number: 8556387Abstract: An ink jet head unit including a head (2) in which a plurality of nozzle arrays (2a, 2b, 2c, 2d) are formed. Each of the nozzle arrays has a number of nozzle holes, and ink can be ejected from the nozzle holes. The head (2) is mounted on the head base, and flat cables (4a, 4b) are connected at one end to mounting parts (7a, 7b), which are interposed between a first pair of the nozzle arrays (2a, 2b) and a second pair of the nozzle arrays (2c, 2d). The flat cables are flexibly formed by covering transmission wires with an insulation film. The flat cables are connected to the head to transmit ink ejection signals for driving the head.Type: GrantFiled: April 28, 2004Date of Patent: October 15, 2013Assignee: Panasonic CorporationInventors: Hiroaki Nakashima, Kazunari Chikanawa, Seishi Tomari, Hiroyuki Matsuba, Tohru Nakagawa, Hideo Torii, Takeshi Kamada
-
Patent number: 7628476Abstract: An ink supplier for an ink jet recorder is provided. The ink supplier includes a recording head, a main ink reservoir, and a subsidiary ink reservoir connected to the main ink reservoir for replenishment with ink from the main ink reservoir. A position head of the ink liquid level in the subsidiary ink reservoir is maintained substantially constant relative to a printing head face of the recording head.Type: GrantFiled: April 27, 2005Date of Patent: December 8, 2009Assignees: Matsushita Electric Industrial Co., Ltd., Miyakoshi Printing Machinery Co., Ltd.Inventors: Hiroyuki Matsuba, Kazunari Chikanawa, Shigeyuki Takao, Tetsuya Matsuzaki, Hideo Izawa, Takao Namiki
-
Patent number: 7506960Abstract: Plural nozzle arrays of which each comprises plural nozzle holes (247a) from which ink is ejected are arranged slantingly in a main scanning direction. A distance between a first arbitrary nozzle hole (247a-1) and a second nozzle hole (247a-2), in a nozzle array adjacent to the array to which this first nozzle hole (247a-1) belongs, which is adjacent to the first nozzle hole (247a-1), and a distance between the first nozzle hole (247a-1) and a third nozzle hole (247a-3), in the nozzle array to which the second nozzle hole (247a-2) belongs, which is further adjacent to the first nozzle hole (247a-1) are different from each other.Type: GrantFiled: April 28, 2004Date of Patent: March 24, 2009Assignee: Panasonic CorporationInventors: Kazunari Chikanawa, Hiroaki Nakashima, Seishi Tomari, Hiroyuki Matsuba, Tohru Nakagawa, Hideo Torii, Takeshi Kamada
-
Patent number: 7156481Abstract: An ink jet recording apparatus, which performs printing by ink ejection, includes a pressure chamber in which ink liquid is filled; a nozzle hole (116) which is formed so as to communicate with the pressure chamber; a piezoelectric element (113) which is formed on the pressure chamber, and deforms the pressure chamber by mechanical expansion and contraction, whereby pressure is generated in the pressure chamber and ink is ejected from the nozzle hole (116); and a dew point control unit (123) which maintains a dew point in an atmosphere of the piezoelectric element (113) and the vicinity of the piezoelectric element at a lower value than a dew point in an environment where the ink jet recording apparatus is set. The dew point control unit (123) includes a compressor (123a), and an air drier (123b) which dries compression gas from the compressor (123a) and feeds it to the piezoelectric element.Type: GrantFiled: April 28, 2004Date of Patent: January 2, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroyuki Matsuba, Tohru Nakagawa, Hideo Torii, Takeshi Kamada, Kazunari Chikanawa, Hiroaki Nakashima, Seishi Tomari
-
Patent number: 7023036Abstract: A ferroelectric element is described which has a structure including a common electrode 11, a ferroelectric film 10 formed on the common electrode 11, an individual electrode 3 formed on the ferroelectric film 10, a lead wire 15 for feeding electric power to the individual electrode 3, which is formed on the same plane as of the individual electrode 3, and a protection film 16 entirely covering the exposed parts of the ferroelectric film 10 and the individual electrode 3, and covering the lead wire 15. The protection film 16 is preferably made of a material whose Young's modulus is smaller than that of the ferroelectric film 10, exactly 1/20 or smaller of the Young's modulus of the ferroelectric film 10. Further, the ferroelectric film is formed with the insulation reinforcing film containing at least one of the elements constituting the ferroelectric film.Type: GrantFiled: October 1, 2002Date of Patent: April 4, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Osamu Watanabe, Takanori Nakano, Kazunari Chikanawa, Shogo Matsubara, Shintaro Hara, Kazuo Nishimura
-
Publication number: 20050248607Abstract: In order to maintain ink supply pressure to a recording head constant while supplying the recording head with ink with an minimum of air entrained therein, the invention provides an ink supplier which comprises a main ink reservoir, a subsidiary ink reservoir connected to the main ink reservoir for replenishment with ink from the main ink reservoir and a means whereby a position head of the ink liquid level in the subsidiary ink reservoir is maintained substantially constant relative to a printing head face of the recording head. Included preferably also are a deaerator associated with the subsidiary ink reservoir for removing air from ink therein and a float floating on ink in the subsidiary ink reservoir.Type: ApplicationFiled: April 27, 2005Publication date: November 10, 2005Applicants: Matsushita Electric Industrial Co., Ltd., Miyakoshi Printing Machinery Co., Ltd.Inventors: Hiroyuki Matsuba, Kazunari Chikanawa, Shigeyuki Takao, Tetsuya Matsuzaki, Hideo Izawa, Takao Namiki
-
Publication number: 20050001868Abstract: An ink jet recording apparatus, which performs printing by ink ejection, comprises a pressure chamber in which ink liquid is filled; a nozzle hole 116 which is formed communicating with the pressure chamber; a piezoelectric element 113 which is formed on the pressure chamber, and deforms the pressure chamber by mechanical expansion and contraction, whereby pressure is generated in the pressure chamber and ink is ejected from the nozzle hole 116; and a dew point control unit 123 which keeps a dew point in an atmosphere of the piezoelectric element 113 and the vicinity of the piezoelectric element 113 at a lower value than a dew point in an environment where the ink jet recording apparatus is set. The dew point control unit 123 comprises a compressor 123a, and an air drier 123b which dries compression gas from this compressor 123a and feeds it to the piezoelectric element 113.Type: ApplicationFiled: April 28, 2004Publication date: January 6, 2005Inventors: Hiroyuki Matsuba, Tohru Nakagawa, Hideo Torii, Takeshi Kamada, Kazunari Chikanawa, Hiroaki Nakashima, Seishi Tomari
-
Publication number: 20050001877Abstract: Plural nozzle arrays of which each comprises plural nozzle holes 247a from which ink is ejected are arranged slantingly in a main scanning direction. A distance between a first arbitrary nozzle hole 247a-1 and a second nozzle hole 247a-2, in a nozzle array adjacent to the array to which this first nozzle hole 247a-1 belongs, which is adjacent to the first nozzle hole 247a-1, and a distance between the first nozzle hole 247a-1 and a third nozzle hole 247a-3, in the nozzle array to which the second nozzle hole 247a-2 belongs, which is further adjacent to the first nozzle hole 247a-1 are different from each other.Type: ApplicationFiled: April 28, 2004Publication date: January 6, 2005Inventors: Kazunari Chikanawa, Hiroaki Nakashima, Seishi Tomari, Hiroyuki Matsuba, Tohru Nakagawa, Hideo Torii, Takeshi Kamada
-
Publication number: 20050001881Abstract: An ink jet head unit comprises a head 2 in which plural nozzle arrays 2a, 2b, 2c, 3d of which each comprises many nozzle holes are formed, and ink is ejected from the nozzle holes; a head base on which the head 2 is mounted; and flat cables 4a, 4b flexibly formed by covering many transmission wires with an insulation film, of which one end sides where the transmission wires are exposed are fixed, in mounted parts 7a, 7b interposed between the nozzle arrays 2a, 2b and the nozzle arrays 2c, 2d, onto the head 2 thereby to transmit ink ejection signals for driving the head 2.Type: ApplicationFiled: April 28, 2004Publication date: January 6, 2005Inventors: Hiroaki Nakashima, Kazunari Chikanawa, Seishi Tomari, Hiroyuki Matsuba, Tohru Nakagawa, Hideo Torii, Takeshi Kamada
-
Publication number: 20040113977Abstract: A recording apparatus provided with a plurality of print line heads 1 for respective colors and thereby performing color printing, in which at least a few of head lines 1 are placed by being offset in the Y direction perpendicular to the X direction which is a relative transportation direction of a recording medium 5.Type: ApplicationFiled: December 10, 2003Publication date: June 17, 2004Inventors: Takahiro Esaki, Kazunari Chikanawa
-
Publication number: 20030156163Abstract: A ferroelectric element is described which has a structure including a common electrode 11, a ferroelectric film 10 formed on the common electrode 11, an individual electrode 3 formed on the ferroelectric film 10, a lead wire 15 for feeding electric power to the individual electrode 3, which is formed on the same plane as of the individual electrode 3, and a protection film 16 entirely covering the exposed parts of the ferroelectric film 10 and the individual electrode 3, and covering the lead wire 15. The protection film 16 is preferably made of a material whose Young's modulus is smaller than that of the ferroelectric film 10, exactly {fraction (1/20)} or smaller of the Young's modulus of the ferroelectric film 10. Further, the ferroelectric film is formed with the insulation reinforcing film containing at least one of the elements constituting the ferroelectric film.Type: ApplicationFiled: October 1, 2002Publication date: August 21, 2003Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Osamu Watanabe, Takanori Nakano, Kazunari Chikanawa, Shogo Matsubara, Shintaro Hara, Kazuo Nishimura
-
Patent number: D569418Type: GrantFiled: November 15, 2004Date of Patent: May 20, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroyuki Matsuba, Yoshinobu Ishimoto, Kazunari Chikanawa
-
Patent number: D590015Type: GrantFiled: April 15, 2008Date of Patent: April 7, 2009Assignee: Panasonic CorporationInventors: Hiroyuki Matsuba, Hiroaki Nakashima, Kazunari Chikanawa