Patents by Inventor Yuji Iwata
Yuji Iwata 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: 10563768Abstract: An internal combustion engine includes an oil seal mounted at a crankshaft of an internal combustion engine body to restrain leakage of oil to an outside of the internal combustion engine, an oil seal fixing member fixed to the internal combustion engine body to fix the oil seal to the internal combustion engine body, and a cover member assembled on a lateral surface portion of the internal combustion engine body in a direction in which the crankshaft extends, the cover member covering the oil seal fixing member from a side opposite to the internal combustion engine body, the oil seal fixing member being fixed to the internal combustion engine body at a fixing position which is provided at an inner side than an outer edge portion of the cover member fastened to the internal combustion engine body.Type: GrantFiled: November 16, 2017Date of Patent: February 18, 2020Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Ichiro Kawano, Yuji Iwata, Akihiro Katsumata
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Publication number: 20180142788Abstract: An internal combustion engine includes an oil seal mounted at a crankshaft of an internal combustion engine body to restrain leakage of oil to an outside of the internal combustion engine, an oil seal fixing member fixed to the internal combustion engine body to fix the oil seal to the internal combustion engine body, and a cover member assembled on a lateral surface portion of the internal combustion engine body in a direction in which the crankshaft extends, the cover member covering the oil seal fixing member from a side opposite to the internal combustion engine body, the oil seal fixing member being fixed to the internal combustion engine body at a fixing position which is provided at an inner side than an outer edge portion of the cover member fastened to the internal combustion engine body.Type: ApplicationFiled: November 16, 2017Publication date: May 24, 2018Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Ichiro KAWANO, Yuji IWATA, Akihiro KATSUMATA
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Patent number: 9216586Abstract: A liquid ejecting apparatus includes a head unit that ejects a liquid onto a medium; a first liquid accommodation unit that accommodates the liquid; a second liquid accommodation unit that is different from the first liquid accommodation unit; a first flow channel that communicates with the first liquid accommodation unit and the head unit; a second flow channel that communicates with the first flow channel and the second liquid accommodation unit; and a liquid supply unit that delivers the liquid from the first liquid accommodation unit to the second liquid accommodation unit through the first flow channel and the second flow channel and that returns the liquid from the second liquid accommodation unit to the first liquid accommodation unit through the second flow channel and the first flow channel.Type: GrantFiled: September 13, 2012Date of Patent: December 22, 2015Assignee: Seiko Epson CorporationInventor: Yuji Iwata
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Patent number: 9073330Abstract: A printer includes an ink storage unit that stores an ink; a head unit that ejects the ink onto a medium; a plurality of supply flow channels for supplying the ink from the ink storage unit to the head unit; a plurality of bypass flow channels hung between the supply flow channels which are respectively different; a maintenance solution storage unit that stores a maintenance solution; and a controller that causes the ink to circulate inside a circulation flow channel which is configured only by the supply flow channel and the bypass flow channel among the ink storage unit, the head unit, the supply flow channel and the bypass flow channel, and that causes the maintenance solution to flow from the maintenance solution storage unit into a section located further to the downstream side of the supply flow channel than the circulation flow channel, and into the head unit.Type: GrantFiled: November 8, 2012Date of Patent: July 7, 2015Assignee: Seiko Epson CorporationInventor: Yuji Iwata
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Patent number: 9073337Abstract: A liquid ejecting apparatus includes a storage unit which stores liquid, a head unit which ejects the liquid onto a medium, a plurality of supply flow paths which supplies the liquid to the head unit from the storage unit, a plurality of bypass flow paths which straddles the supply flow paths which are different from each other, and a controller which circulates the liquid in a circulating flow path which is configured only by the supply flow path and the bypass flow path among the storage unit, the head unit, the supply flow path, and the bypass flow path.Type: GrantFiled: September 13, 2012Date of Patent: July 7, 2015Assignee: Seiko Epson CorporationInventor: Yuji Iwata
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Patent number: 8974018Abstract: Disclosed herein is a liquid discharge apparatus including a transporting unit to transport a medium, a storage unit to store liquid, a head unit to discharge the liquid onto the medium, a plurality of supply flow paths to supply the liquid from the storage unit to the head unit, a plurality of bypass flow paths, and a controller that causes alternately to repeat a transport operation which transports the medium by the transporting unit and a liquid discharge operation which discharges the liquid from the head unit, thereby to form an image on the medium, and to circulate, when the liquid is not discharged during execution of the image forming process, the liquid within a circulation flow path constituted only by the supply flow paths and the bypass flow paths among the storage unit, the head unit, the supply flow paths, and the bypass flow paths.Type: GrantFiled: October 29, 2012Date of Patent: March 10, 2015Assignee: Seiko Epson CorporationInventor: Yuji Iwata
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Patent number: 8960829Abstract: A printing apparatus includes a transporting unit which transports a medium, a head unit which discharges a plurality of types of ink onto the medium, a storage unit which stores white ink of the plurality of types of ink, a plurality of supply flow paths for supplying the white ink from the storage unit to the head unit, a plurality of bypass flow paths which are bridged between different supply flow paths from each other, and a controller which repeatedly performs a transport operation by the transporting unit, a color print operation and a white print operation to perform an image forming process on the medium and circulates the white ink in a circulation flow path formed only of the supply flow paths and the bypass flow paths among the storage unit, the head unit, the supply flow paths and the bypass flow paths, during the color print operation.Type: GrantFiled: October 30, 2012Date of Patent: February 24, 2015Assignee: Seiko Epson CorporationInventor: Yuji Iwata
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Patent number: 8567890Abstract: A method is for controlling a droplet discharge device including at least a droplet discharge head having a plurality of nozzles for discharging droplets of a functional liquid, a plurality of drive elements provided corresponding to each of the nozzles, and a vibrating plate which is vibrated by the drive elements to discharge the functional liquid from the nozzles; and a flushing unit in which the vibrating plate undergoes microvibration when the droplet discharge head is in a standby period. The method for controlling a droplet discharge device includes selecting one of a plurality of predetermined microvibration control programs for causing the vibrating plate to undergo microvibration in accordance with information relating to the functional liquid, and controlling the drive elements to cause the vibrating plate to undergo microvibration when the droplet discharge head is in the standby period in accordance with the selected microvibration control program.Type: GrantFiled: May 25, 2010Date of Patent: October 29, 2013Assignee: Seiko Epson CorporationInventors: Tatsuya Ito, Yuji Iwata, Osamu Kasuga
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Publication number: 20130242005Abstract: A liquid ejecting apparatus includes a head unit that ejects a liquid onto a medium; a first liquid accommodation unit that accommodates the liquid; a second liquid accommodation unit that is different from the first liquid accommodation unit; a first flow channel that communicates with the first liquid accommodation unit and the head unit; a second flow channel that communicates with the first flow channel and the second liquid accommodation unit; and a liquid supply unit that delivers the liquid from the first liquid accommodation unit to the second liquid accommodation unit through the first flow channel and the second flow channel and that returns the liquid from the second liquid accommodation unit to the first liquid accommodation unit through the second flow channel and the first flow channel.Type: ApplicationFiled: September 13, 2012Publication date: September 19, 2013Applicant: SEIKO EPSON CORPORATIONInventor: Yuji Iwata
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Publication number: 20130241979Abstract: A liquid ejecting apparatus includes a storage unit which stores liquid, a head unit which ejects the liquid onto a medium, a plurality of supply flow paths which supplies the liquid to the head unit from the storage unit, a plurality of bypass flow paths which straddles the supply flow paths which are different from each other, and a controller which circulates the liquid in a circulating flow path which is configured only by the supply flow path and the bypass flow path among the storage unit, the head unit, the supply flow path, and the bypass flow path.Type: ApplicationFiled: September 13, 2012Publication date: September 19, 2013Applicant: SEIKO EPSON CORPORATIONInventor: Yuji IWATA
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Patent number: 8444249Abstract: A droplet discharge device includes: a discharge unit discharging a droplet and being moved relatively to a discharged object, on which the droplet is discharged, so as to form a predetermined pattern on the discharged object; a discharge amount measurement unit measuring a discharge amount of the droplet discharged from the discharge unit; a temperature acquisition unit acquiring a temperature of the droplet in the formation of the predetermined pattern; a temperature adjustment unit adjusting the temperature of the discharge unit; and a discharge amount adjustment unit adjusting the discharge amount of the discharge unit. In the device, the temperature adjustment unit adjusts a temperature of the droplet in the measurement of the discharge amount by the discharge amount measurement unit to the temperature in the formation of the predetermined pattern.Type: GrantFiled: May 23, 2012Date of Patent: May 21, 2013Assignee: Seiko Epson CorporationInventors: Tatsuya Ito, Yuji Iwata, Osamu Kasuga
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Patent number: 8308267Abstract: A droplet discharge device includes a head for discharging a functional liquid, a driving voltage generation unit for generating a driving voltage to drive the head, first and second temperature acquisition units, a temperature difference computing unit, and a driving voltage correction unit. The first and second temperature acquisition units are configured to acquire temperature of the functional liquid in the head as first and second temperatures, respectively, when the head is in a head waiting state and in a head driven state, respectively. The temperature difference computing unit is configured to compute a temperature difference between the first and second temperatures. The driving voltage correction unit is configured to correct the driving voltage based on the temperature difference. The driving voltage generation unit is configured to generate the corrected driving voltage to the head when the head is in the head driven state.Type: GrantFiled: May 28, 2009Date of Patent: November 13, 2012Assignee: Seiko Epson CorporationInventors: Yuji Iwata, Tatsuya Ito, Osamu Kasuga
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Patent number: 8292403Abstract: A droplet discharge device includes an inkjet head including a nozzle plate having a nozzle, the inkjet head aligned so that a droplet of a function liquid discharged from the nozzle is placed on a surface of a target, a heater applying heat to the function liquid at the inkjet head, and an insulating member having an opening corresponding to the nozzle, the insulating member positioned between the target and the nozzle plate so as to prevent heat transmission from the inkjet head to the target.Type: GrantFiled: June 10, 2009Date of Patent: October 23, 2012Assignee: Seiko Epson CorporationInventor: Yuji Iwata
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Publication number: 20120229548Abstract: A droplet discharge device includes: a discharge unit discharging a droplet and being moved relatively to a discharged object, on which the droplet is discharged, so as to form a predetermined pattern on the discharged object; a discharge amount measurement unit measuring a discharge amount of the droplet discharged from the discharge unit; a temperature acquisition unit acquiring a temperature of the droplet in the formation of the predetermined pattern; a temperature adjustment unit adjusting the temperature of the discharge unit; and a discharge amount adjustment unit adjusting the discharge amount of the discharge unit. In the device, the temperature adjustment unit adjusts a temperature of the droplet in the measurement of the discharge amount by the discharge amount measurement unit to the temperature in the formation of the predetermined pattern.Type: ApplicationFiled: May 23, 2012Publication date: September 13, 2012Applicant: SEIKO EPSON CORPORATIONInventors: Tatsuya ITO, Yuji IWATA, Osamu KASUGA
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Patent number: 8252383Abstract: A method for ejecting liquid crystal from a droplet ejection head onto a mother glass substrate is disclosed. The ejecting method includes: substantially equalizing the temperature in the proximity of the droplet ejection head when the droplet ejection head is held in a standby state at a standby position with the temperature in the proximity of the droplet ejection head at the time when the droplet ejection head ejects the liquid crystal onto the mother glass substrate; and moving the droplet ejection head from the standby position to a position at which the mother glass substrate is located, thereby performing ejection of the liquid crystal onto the mother glass substrate.Type: GrantFiled: November 29, 2007Date of Patent: August 28, 2012Assignee: Seiko Epson CorporationInventor: Yuji Iwata
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Patent number: 8205957Abstract: A droplet discharge device includes: a discharge unit discharging a droplet and being moved relatively to a discharged object, on which the droplet is discharged, so as to form a predetermined pattern on the discharged object; a discharge amount measurement unit measuring a discharge amount of the droplet discharged from the discharge unit; a temperature acquisition unit acquiring a temperature of the discharge unit in the formation of the predetermined pattern; a temperature adjustment unit adjusting the temperature of the discharge unit; and a discharge amount adjustment unit adjusting the discharge amount of the discharge unit. In the device, the temperature adjustment unit adjusts a temperature of the discharge unit in the measurement of the discharge amount by the discharge amount measurement unit to the temperature in the formation of the predetermined pattern.Type: GrantFiled: May 22, 2009Date of Patent: June 26, 2012Assignee: Seiko Epson CorporationInventors: Tatsuya Ito, Yuji Iwata, Osamu Kasuga
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Patent number: 7883176Abstract: A droplet discharge device includes an inkjet head including a nozzle plate having a nozzle, the inkjet head aligned so that a droplet of a function liquid discharged from the nozzle is placed on a surface of a target, a heater applying heat to the function liquid at the inkjet head, and an insulating member having an opening corresponding to the nozzle, the insulating member positioned between the target and the nozzle plate so as to prevent heat transmission from the inkjet head to the target.Type: GrantFiled: June 10, 2009Date of Patent: February 8, 2011Assignee: Seiko Epson CorporationInventor: Yuji Iwata
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Publication number: 20100302296Abstract: A method is for controlling a droplet discharge device including at least a droplet discharge head having a plurality of nozzles for discharging droplets of a functional liquid, a plurality of drive elements provided corresponding to each of the nozzles, and a vibrating plate which is vibrated by the drive elements to discharge the functional liquid from the nozzles; and a flushing unit in which the vibrating plate undergoes microvibration when the droplet discharge head is in a standby period. The method for controlling a droplet discharge device includes selecting one of a plurality of predetermined microvibration control programs for causing the vibrating plate to undergo microvibration in accordance with information relating to the functional liquid, and controlling the drive elements to cause the vibrating plate to undergo microvibration when the droplet discharge head is in the standby period in accordance with the selected microvibration control program.Type: ApplicationFiled: May 25, 2010Publication date: December 2, 2010Applicant: SEIKO EPSON CORPORATIONInventors: Tatsuya ITO, Yuji IWATA, Osamu KASUGA
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Patent number: 7828418Abstract: A method for forming a mark includes ejecting a droplet of a liquid containing a mark forming material onto a surface of an object; radiating a laser beam from a radiation port to a predetermined radiation target position; moving at least one of the object and the radiation port relative to the other in such a manner that the laser beam radiated from the radiation port is radiated onto the droplet on the surface, wherein the droplet forms a mark on the surface by being irradiated with the laser beam; and pivoting the radiation port about the radiation target position as a pivot axis so as to set a radiation angle of the laser beam.Type: GrantFiled: October 26, 2006Date of Patent: November 9, 2010Assignee: Seiko Epson CorporationInventor: Yuji Iwata
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Patent number: 7816277Abstract: A deposit forming method including ejecting droplets of a deposit forming material onto a substrate, thereby forming a deposit by the droplets on the substrate, is provided. The droplets are ejected along a direction inclined at a predetermined angle in a predetermined direction with respect to a normal line of the substrate and at a predetermined pitch in the predetermined direction. The predetermined angle is set in correspondence with the diameter of each of the droplets and the predetermined pitch in such a manner that the dimension of a dot formed by each droplet on the substrate in the predetermined direction becomes greater than or equal to the predetermined pitch.Type: GrantFiled: February 12, 2007Date of Patent: October 19, 2010Assignee: Seiko Epson CorporationInventors: Kei Hiruma, Osamu Kasuga, Yuji Iwata