Patents by Inventor Kazuaki Sakurada
Kazuaki Sakurada 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: 20230182495Abstract: A control unit acquires an interval between weaving threads in a woven fabric, and changes an interval between ruled lines constituting a ruled line group in a test pattern on the basis of the acquired interval between weaving threads. When the interval between weaving threads in the woven fabric matches the interval between ruled lines constituting the ruled line group in the test pattern or when these intervals are in the relationship of integer multiple, ruled lines in the test pattern match the interval between weaving threads in the woven fabric. When they match, it is difficult to recognize the difference between the test pattern and the shadow of the weaving thread in the woven fabric. The control unit changes the interval between ruled lines constituting the ruled line group in the test pattern on the basis of the interval between weaving threads. This enables the difference recognition to be less difficult.Type: ApplicationFiled: December 14, 2022Publication date: June 15, 2023Inventor: Kazuaki SAKURADA
-
Publication number: 20220088952Abstract: A liquid ejecting device includes: a head having a plurality of nozzles for ejecting droplets onto a printing medium; a movement unit configured to move the head relative to the printing medium in a relative movement direction; and a control unit configured to record a test pattern on the printing medium by controlling the head and the movement unit, and to perform recording by correcting control of the head and/or the movement unit based on a correction value obtained from the test pattern, wherein the test pattern includes a plurality of patches from which a plurality of candidates for the correction value for correcting a landing position at which the droplet lands on the printing medium in the relative movement direction are obtained.Type: ApplicationFiled: September 16, 2021Publication date: March 24, 2022Inventors: Kazuaki SAKURADA, Junichi TAKENUKI, Teruyuki TAKATA
-
Patent number: 11198312Abstract: A method for determining a working gap includes a first recording step for ejecting ink from a recording head onto a first recording medium to record a test pattern, a first imaging step for capturing the test pattern recorded on the first recording medium in each of a state where a distance between the recording head and the first recording medium is a first distance, and a state where a distance between the recording head and the first recording medium is a second distance, a function calculating step, a second recording step for recording the test pattern on a second recording medium, a second imaging step for capturing the test pattern recorded on the second recording medium, and a working gap determining step for determining, based on the number of pixels of the captured test pattern and a function, a distance between the recording head and the second recording medium.Type: GrantFiled: January 29, 2020Date of Patent: December 14, 2021Assignee: Seiko Epson CorporationInventors: Kazuaki Sakurada, Tetsuo Tatsuda, Yuichi Shikagawa, Mamoru Ukita
-
Patent number: 10737486Abstract: A printing method includes a printing process that performs printing on a recording medium, in which, in the printing process, a first correction is performed in which discharging portions, where a first correction target head other than a first reference head among heads of a first group and a second correction target head other than the first reference head among the heads of a second group discharge inks, are corrected based on a first reference printing pattern, and a second correction is performed in which a discharging portion, where a third correction target head among heads of a third group other than a second reference head discharges the inks, is corrected based on the first reference printing pattern and a second reference printing pattern.Type: GrantFiled: December 5, 2017Date of Patent: August 11, 2020Assignee: Seiko Epson CorporationInventor: Kazuaki Sakurada
-
Publication number: 20200247159Abstract: A method for determining a working gap includes a first recording step for ejecting ink from a recording head onto a first recording medium to record a test pattern, a first imaging step for capturing the test pattern recorded on the first recording medium in each of a state where a distance between the recording head and the first recording medium is a first distance, and a state where a distance between the recording head and the first recording medium is a second distance, a function calculating step, a second recording step for recording the test pattern on a second recording medium, a second imaging step for capturing the test pattern recorded on the second recording medium, and a working gap determining step for determining, based on the number of pixels of the captured test pattern and a function, a distance between the recording head and the second recording medium.Type: ApplicationFiled: January 29, 2020Publication date: August 6, 2020Inventors: Kazuaki SAKURADA, Tetsuo TATSUDA, Yuichi SHIKAGAWA, Mamoru UKITA
-
Patent number: 10442216Abstract: A printing apparatus includes a transporting section that transports a work, a printing mechanism section that has a nozzle plate that performs printing by discharging ink on the work, and a moving section that reciprocally and relatively moves the printing mechanism section in a direction intersecting the transporting direction of the work. In the printing apparatus, when the printing mechanism section moves reciprocally, printing in a forward path includes a first printing area, a second printing areas, and printing in a backward path includes a first printing area, and second printing areas. In addition, the transportation amount of the work is adjusted based on the second printing areas.Type: GrantFiled: October 14, 2015Date of Patent: October 15, 2019Assignee: Seiko Epson CorporationInventors: Itaru Kozuma, Kazuaki Sakurada, Seigo Momose
-
Patent number: 10286667Abstract: A recording device includes, when a transporting direction of a medium is set to a first axis and a direction intersecting with the transporting direction is set to a second axis, a head which includes a nozzle column along the first axis; a pair of heads in which the heads discharging droplets of the same color are paired; and a head unit which includes a plurality of pairs of heads along the second axis. The pair of heads include a predetermined overlapping portion in which the nozzle columns are overlapped with each other in a side view from the second axis, the overlapping portion includes a plurality of nozzle regions divided along the second axis, and a position of the nozzle region which is used in discharge of the droplets is different from a position of the nozzle region of another pair of heads.Type: GrantFiled: March 17, 2017Date of Patent: May 14, 2019Assignee: Seiko Epson CorporationInventors: Kazuaki Sakurada, Toru Fujita, Takamitsu Kondo, Seigo Momose, Akira Yamada, Masahisa Otake
-
Patent number: 10173419Abstract: The printing apparatus is provided with a transport mechanism section that transports work, a printing mechanism section that has nozzles, which carry out printing by discharging an ink, as liquid droplets, onto the work transported by the transport mechanism section, and an adjustment section that adjusts a volume per single droplet of the ink discharged from the nozzles on the basis of a separation distance between the nozzles and the work, which is positioned directly below the nozzles.Type: GrantFiled: February 29, 2016Date of Patent: January 8, 2019Assignee: Seiko Epson CorporationInventors: Kazuaki Sakurada, Takamitsu Kondo, Seigo Momose, Akira Yamada
-
Publication number: 20180229519Abstract: A printing apparatus includes a transporting section that transports a work, a printing mechanism section that has a nozzle plate that performs printing by discharging ink on the work, and a moving section that reciprocally and relatively moves the printing mechanism section in a direction intersecting the transporting direction of the work. In the printing apparatus, when the printing mechanism section moves reciprocally, printing in a forward path includes a first printing area, a second printing areas, and printing in a backward path includes a first printing area, and second printing areas. In addition, the transportation amount of the work is adjusted based on the second printing areas.Type: ApplicationFiled: October 14, 2015Publication date: August 16, 2018Inventors: Itaru KOZUMA, Kazuaki SAKURADA, Seigo MOMOSE
-
Publication number: 20180154629Abstract: A printing method includes a printing process that performs printing on a recording medium, in which, in the printing process, a first correction is performed in which discharging portions, where a first correction target head other than a first reference head among heads of a first group and a second correction target head other than the first reference head among the heads of a second group discharge inks, are corrected based on a first reference printing pattern, and a second correction is performed in which a discharging portion, where a third correction target head among heads of a third group other than a second reference head discharges the inks, is corrected based on the first reference printing pattern and a second reference printing pattern.Type: ApplicationFiled: December 5, 2017Publication date: June 7, 2018Inventor: Kazuaki Sakurada
-
Patent number: 9962928Abstract: A printing apparatus includes a transport section, a printing section, and a control section. The printing section is configured to move in an intersecting direction intersecting a transport direction of a recording medium. The printing section includes a plurality of nozzles that are configured to perform printing by discharging an ink onto the recording medium. The control section is configured to control the transport section and the printing section. The printing section includes a first nozzle row and a second nozzle row, the first and second nozzle rows form an overlapping section in which the first and second nozzle rows overlap each other as viewed in the intersecting direction. The control section is configured to control a plurality of adjacent nozzles among the first nozzle row and the second nozzle row, which are in the vicinity of the overlapping section, not to discharge the ink.Type: GrantFiled: March 23, 2017Date of Patent: May 8, 2018Assignee: Seiko Epson CorporationInventors: Kazuaki Sakurada, Takamitsu Kondo, Seigo Momose, Akira Yamada
-
Publication number: 20180043685Abstract: The printing apparatus is provided with a transport mechanism section that transports work, a printing mechanism section that has nozzles, which carry out printing by discharging an ink, as liquid droplets, onto the work transported by the transport mechanism section, and an adjustment section that adjusts a volume per single droplet of the ink discharged from the nozzles on the basis of a separation distance between the nozzles and the work, which is positioned directly below the nozzles.Type: ApplicationFiled: February 29, 2016Publication date: February 15, 2018Inventors: Kazuaki SAKURADA, Takamitsu KONDO, Seigo MOMOSE, Akira YAMADA
-
Publication number: 20170274650Abstract: A recording device includes, when a transporting direction of a medium is set to a first axis and a direction intersecting with the transporting direction is set to a second axis, a head which includes a nozzle column along the first axis; a pair of heads in which the heads discharging droplets of the same color are paired; and a head unit which includes a plurality of pairs of heads along the second axis. The pair of heads include a predetermined overlapping portion in which the nozzle columns are overlapped with each other in a side view from the second axis, the overlapping portion includes a plurality of nozzle regions divided along the second axis, and a position of the nozzle region which is used in discharge of the droplets is different from a position of the nozzle region of another pair of heads.Type: ApplicationFiled: March 17, 2017Publication date: September 28, 2017Inventors: Kazuaki SAKURADA, Toru FUJITA, Takamitsu KONDO, Seigo MOMOSE, Akira YAMADA, Masahisa OTAKE
-
Patent number: 9770919Abstract: There is provided a recording apparatus in which it is possible to use a suitable reaction liquid to be applied on the recording medium, out of multiple types of reaction liquids. A recording apparatus includes a transport mechanism that transports a recording medium, a reaction liquid applying mechanism that selectively applies, on the recording medium, either a first reaction liquid that reacts with ink or a second reaction liquid that reacts with the ink and is different from the first reaction liquid, and an ink discharge mechanism that is positioned downstream from the reaction liquid applying mechanism in the transport direction of the recording medium and discharges the ink onto the recording medium. It is preferable that the reaction liquid applying mechanism include a first reaction liquid discharge unit that discharges the first reaction liquid and a second reaction liquid discharge unit that discharges the second reaction liquid.Type: GrantFiled: November 26, 2014Date of Patent: September 26, 2017Assignee: Seiko Epson CorporationInventors: Yuichi Washio, Kentaro Miyazaki, Kazuaki Sakurada, Satoru Katagami, Kazuya Tajima
-
Publication number: 20170210158Abstract: A printing apparatus executes a continuous printing by a printing execution unit while transporting a belt-shaped printing base material by a transport path in a longer direction. The printing execution unit includes a reaction solution discharge head, an ink discharge head, and a head for overprinting. The reaction solution discharge head forms a reaction solution layer containing a flocculant on a printing face of the printing base material. The ink discharge head forms a printing image by discharging an ink containing a color material on the reaction solution layer. The head for overprinting forms an overprint layer so as to be positioned on the reaction solution layer.Type: ApplicationFiled: July 21, 2015Publication date: July 27, 2017Inventors: Kazuaki SAKURADA, Kentaro MIYAZAKI, Satoru KATAGAMI, Yuichi WASHIO, Kazuya TAJIMA
-
Publication number: 20170190172Abstract: A printing apparatus includes a transport section, a printing section, and a control section. The printing section is configured to move in an intersecting direction intersecting a transport direction of a recording medium. The printing section includes a plurality of nozzles that are configured to perform printing by discharging an ink onto the recording medium. The control section is configured to control the transport section and the printing section. The printing section includes a first nozzle row and a second nozzle row, the first and second nozzle rows form an overlapping section in which the first and second nozzle rows overlap each other as viewed in the intersecting direction. The control section is configured to control a plurality of adjacent nozzles among the first nozzle row and the second nozzle row, which are in the vicinity of the overlapping section, not to discharge the ink.Type: ApplicationFiled: March 23, 2017Publication date: July 6, 2017Inventors: Kazuaki SAKURADA, Takamitsu KONDO, Seigo MOMOSE, Akira YAMADA
-
Patent number: 9636933Abstract: A printing apparatus is provided with a transport mechanism section that transports work, a printing mechanism section that has multiple nozzle groups, which perform printing by discharging an ink onto the work as liquid droplets, and control section that controls the actions of the transport mechanism section and the printing mechanism section. In addition, the printing mechanism section includes a first nozzle row that forms a first printing region, a second nozzle row that forms a second printing region, and an overlapping section in which the first nozzle row and the second nozzle row overlap. Further, the control section prohibits overlapping of the first printing region with the second printing region on the work when forming the third printing region.Type: GrantFiled: February 29, 2016Date of Patent: May 2, 2017Assignee: Seiko Epson CorporationInventors: Kazuaki Sakurada, Takamitsu Kondo, Seigo Momose, Akira Yamada
-
Patent number: 9573388Abstract: A printing method uses a reaction liquid containing an aggregating agent capable of causing the aggregation of a color material. This printing method includes: applying a first reaction liquid to a recording medium; applying a background color ink that contains a color material for a background color to a region of the recording medium which is coated with the first reaction liquid; drying the recording medium coated with the background color ink by heating the recording medium; applying a second reaction liquid to a region of the dried recording medium which is coated with the background color ink; and applying an image forming ink that contains a color material having a color different from that of the background color ink to a region of the recording medium which is coated with the second reaction liquid.Type: GrantFiled: November 6, 2015Date of Patent: February 21, 2017Assignee: Seiko Epson CorporationInventors: Satoru Katagami, Kazuaki Sakurada, Kazuya Tajima, Kazuyoshi Tanase, Yuichi Washio, Kentaro Miyazaki
-
Publication number: 20160288542Abstract: A printing apparatus is provided with a transport mechanism section that transports work, a printing mechanism section that has multiple nozzle groups, which perform printing by discharging an ink onto the work as liquid droplets, and control section that controls the actions of the transport mechanism section and the printing mechanism section. In addition, the printing mechanism section includes a first nozzle row that forms a first printing region, a second nozzle row that forms a second printing region, and an overlapping section in which the first nozzle row and the second nozzle row overlap. Further, the control section prohibits overlapping of the first printing region with the second printing region on the work when forming the third printing region.Type: ApplicationFiled: February 29, 2016Publication date: October 6, 2016Inventors: Kazuaki SAKURADA, Takamitsu KONDO, Seigo MOMOSE, Akira YAMADA
-
Publication number: 20160221366Abstract: There is provided a recording apparatus in which it is possible to use a suitable reaction liquid to be applied on the recording medium, out of multiple types of reaction liquids. A recording apparatus includes a transport mechanism that transports a recording medium, a reaction liquid applying mechanism that selectively applies, on the recording medium, either a first reaction liquid that reacts with ink or a second reaction liquid that reacts with the ink and is different from the first reaction liquid, and an ink discharge mechanism that is positioned downstream from the reaction liquid applying mechanism in the transport direction of the recording medium and discharges the ink onto the recording medium. It is preferable that the reaction liquid applying mechanism include a first reaction liquid discharge unit that discharges the first reaction liquid and a second reaction liquid discharge unit that discharges the second reaction liquid.Type: ApplicationFiled: November 26, 2014Publication date: August 4, 2016Inventors: Yuichi WASHIO, Kentaro MIYAZAKI, Kazuaki SAKURADA, Satoru KATAGAMI, Kazuya TAJIMA