Patents by Inventor Akifumi Arai
Akifumi Arai 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: 11731427Abstract: A printer includes an ink head including a nozzle surface including nozzles, a cap including an end portion contactable with the nozzle surface, a suction device, a memory, and a controller. The memory stores a suction position, a free suction position, and a minute open position located between the suction position and the free suction position. The controller performs a suction process in which the cap is located at the suction position and ink is sucked from the nozzles, and a minute open position process in which the cap is moved toward a minute open position and movement of the cap is stopped with the cap located at a minute open position, after the suction process.Type: GrantFiled: March 25, 2020Date of Patent: August 22, 2023Assignee: ROLAND DG CORPORATIONInventors: Kazuya Morizono, Teppei Sawada, Akifumi Arai
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Patent number: 11141977Abstract: An inkjet printer includes a first ink head, an ink collector, and an intermittent flushing controller. The first ink head includes a first sub-head that includes a first nozzle to discharge first ink, a second sub-head that includes a second nozzle to discharge second ink different from the first ink, and a nozzle surface provided with the first nozzle and the second nozzle. The ink collector collects the ink discharged from the first ink head. The intermittent flushing controller performs an intermittent flushing operation for at least the first sub-head. The intermittent flushing operation involves repeating a first operation and a second operation for a predetermined number of iterations. The first operation involves discharging the first ink into the ink collector from the first nozzle a predetermined number of times. The second operation involves being on standby for a predetermined time without discharging the first ink from the first nozzle.Type: GrantFiled: February 3, 2020Date of Patent: October 12, 2021Assignee: ROLAND DG CORPORATIONInventors: Teppei Sawada, Akifumi Arai
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Publication number: 20200307220Abstract: A printer includes an ink head including a nozzle surface including nozzles, a cap including an end portion contactable with the nozzle surface, a suction device, a memory, and a controller. The memory stores a suction position, a free suction position, and a minute open position located between the suction position and the free suction position. The controller performs a suction process in which the cap is located at the suction position and ink is sucked from the nozzles, and a minute open position process in which the cap is moved toward a minute open position and movement of the cap is stopped with the cap located at a minute open position, after the suction process.Type: ApplicationFiled: March 25, 2020Publication date: October 1, 2020Inventors: Kazuya MORIZONO, Teppei SAWADA, Akifumi ARAI
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Publication number: 20200254767Abstract: An inkjet printer includes a first ink head, an ink collector, and an intermittent flushing controller. The first ink head includes a first sub-head that includes a first nozzle to discharge first ink, a second sub-head that includes a second nozzle to discharge second ink different from the first ink, and a nozzle surface provided with the first nozzle and the second nozzle. The ink collector collects the ink discharged from the first ink head. The intermittent flushing controller performs an intermittent flushing operation for at least the first sub-head. The intermittent flushing operation involves repeating a first operation and a second operation for a predetermined number of iterations. The first operation involves discharging the first ink into the ink collector from the first nozzle a predetermined number of times. The second operation involves being on standby for a predetermined time without discharging the first ink from the first nozzle.Type: ApplicationFiled: February 3, 2020Publication date: August 13, 2020Inventors: Teppei SAWADA, Akifumi ARAI
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Publication number: 20110312213Abstract: A flat cable wiring structure includes a cable main body and a reinforcement piece. The cable main body includes conductors and an insulating film covering the conductors, and is configured to be wired near portions of a wiring board where leg portion of an electrical component protrudes from a surface of the wiring board. The reinforcement piece is superimposed on a partitioned area of an outer surface of the insulating film. The partitioned area is an area where the outer surface of the insulating film comes into contact with the leg portion in a case where the outer surface of the insulating film comes into contact with the leg portion due to a deformation of the cable main body.Type: ApplicationFiled: June 16, 2011Publication date: December 22, 2011Inventor: Akifumi ARAI
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Patent number: 7344390Abstract: A parallel wire is installed on a board. Wire parts of strip-off margins at both ends of the parallel wire are bent so as to form bent portions before the wire parts are inserted into the board. The wire parts inserted into the board are prevented from being removed from the board by the bent portions and soldered to the board, while being moved in a dip bath. The bent portions are respectively formed into substantially U-shapes so that the substantially U-shaped bent portions are oriented opposite each other in a case where the parallel wire is in a flat state before the wire parts are inserted into the board and the substantially U-shaped bent portions are oriented in the same direction after the wire parts are inserted into the board, whereby solder uniformly accumulates on the wire parts to fix the wire parts to the board when the wire parts inserted into the board are moved in the dip bath in said direction.Type: GrantFiled: November 29, 2006Date of Patent: March 18, 2008Assignee: Funai Electric Co., Ltd.Inventor: Akifumi Arai
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Publication number: 20070155251Abstract: A parallel wire is installed on a board. Wire parts of strip-off margins at both ends of the parallel wire are bent so as to form bent portions before the wire parts are inserted into the board. The wire parts inserted into the board are prevented from being removed from the board by the bent portions and soldered to the board, while being moved in a dip bath. The bent portions are respectively formed into substantially U-shapes so that the substantially U-shaped bent portions are oriented opposite each other in a case where the parallel wire is in a flat state before the wire parts are inserted into the board and the substantially U-shaped bent portions are oriented in the same direction after the wire parts are inserted into the board, whereby solder uniformly accumulates on the wire parts to fix the wire parts to the board when the wire parts inserted into the board are moved in the dip bath in said direction.Type: ApplicationFiled: November 29, 2006Publication date: July 5, 2007Applicant: Funai Electric Co., Ltd.Inventor: Akifumi Arai
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Patent number: 6950633Abstract: A rotary non-contact connector and a non-rotary non-contact connector enable data transmission in a non-contact mode by radio transmitters-receivers by combining rotary transformers or stationary transformers and radio transmitters-receivers, and providing power systems with buffer functions by a storage means to receive supplied electric power. Each of the rotary non-contact connector and the non-rotary non-contact connector has first and second radio transmitters-receivers provided between a rotor and an annular stator of a rotary transformer and between first and second stationary members of a stationary transformer to permit two-way radio data communication in a non-contact mode. Furthermore, storage means are provided to implement a buffering function for a power system.Type: GrantFiled: January 8, 2002Date of Patent: September 27, 2005Assignees: Tamagawa Seiki Kabushiki Kaisha, Chubu Nihon Maruki Co., Ltd.Inventors: Tetsuya Kojima, Akifumi Arai, Hiroyuki Koitabashi
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Patent number: 6759759Abstract: A rotary contactless connector and a non-rotary contactless connector enable data transmission in a contactless mode by optical elements by combining a rotary transformer or a stationary transformer and a means for coupling the optical elements, and providing a power system with or without a buffer feature by a storage means to receive supplied electric power. The rotary contactless connector has a rotary transformer (1), a light emitting element (8) or a light receiving element provided in the rotor (3), and a stationary light emitting element or light receiving element (11). Data is transmitted between the light emitting element (8) and the light receiving element (11) while supplying electric power to the rotor (3) through the intermediary of the rotary transformer (1).Type: GrantFiled: August 24, 2001Date of Patent: July 6, 2004Assignees: Tamagawa Seiki Kabushiki Kaisha, Chubu Maruko Co., Ltd.Inventors: Tetsuya Kojima, Akifumi Arai, Hiroyuki Koitabashi
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Publication number: 20040012471Abstract: A rotary contactless connector and a non-rotary contactless connector enable data transmission in a contactless mode by optical elements by combining a rotary transformer or a stationary transformer and a means for coupling the optical elements, and providing a power system with or without a buffer feature by a storage means to receive supplied electric power. The rotary contactless connector has a rotary transformer (1), a light emitting element (8) or a light receiving element provided in the rotor (3), and a stationary light emitting element or light receiving element (11). Data is transmitted between the light emitting element (8) and the light receiving element (11) while supplying electric power to the rotor (3) through the intermediary of the rotary transformer (1).Type: ApplicationFiled: August 24, 2001Publication date: January 22, 2004Applicants: TAMAGAWA SEIKI KABUSHIKI KAISHA, CHUBU NIHON MARUKO CO., LTD.Inventors: Tetsuya Kojima, Akifumi Arai, Hiroyuki Koitabashi
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Publication number: 20020132589Abstract: A rotary non-contact connector and a non-rotary non-contact connector enable data transmission in a non-contact mode by radio transmitters-receivers by combining rotary transformers or stationary transformers and radio transmitters-receivers, and providing power systems with buffer functions by a storage means to receive supplied electric power. Each of the rotary non-contact connector and the non-rotary non-contact connector has first and second radio transmitters-receivers provided between a rotor and an annular stator of a rotary transformer and between first and second stationary members of a stationary transformer to permit two-way radio data communication in a non-contact mode. Furthermore, storage means are provided to implement a buffering function for a power system.Type: ApplicationFiled: January 8, 2002Publication date: September 19, 2002Applicant: TAMAGAWA SEIKI KABUSHIKI KAISHAInventors: Tetsuya Kojima, Akifumi Arai, Hiroyuki Koitabashi