Patents by Inventor Yuichiro Iwai

Yuichiro Iwai 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).

  • Patent number: 8523319
    Abstract: A method for arranging liquid droplet ejection heads includes: arranging and fixing a plurality of inkjet liquid droplet ejection heads, ejecting a common functional liquid, on a common carriage plate, based on the amount of liquid droplets ejected from a number of ejecting nozzles in a nozzle row that each of the liquid droplet ejection heads has, with the heads shifted in a direction of the nozzle row, the heads being so arranged and fixed that in the heads closely aligned in the direction of the nozzle row, a difference between the amounts of liquid droplets ejected from two ejection nozzles located at each innermost end of the heads is within a predetermined range of tolerance, and the amounts of liquid droplets ejected from two ejection nozzles located at the outermost ends in the direction of the nozzle row are within a predetermined range of a reference amount.
    Type: Grant
    Filed: June 25, 2010
    Date of Patent: September 3, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Toru Igarashi, Yuichiro Iwai
  • Publication number: 20100259581
    Abstract: A method for arranging liquid droplet ejection heads includes: arranging and fixing a plurality of inkjet liquid droplet ejection heads, ejecting a common functional liquid, on a common carriage plate, based on the amount of liquid droplets ejected from a number of ejecting nozzles in a nozzle row that each of the liquid droplet ejection heads has, with the heads shifted in a direction of the nozzle row, the heads being so arranged and fixed that in the heads closely aligned in the direction of the nozzle row, a difference between the amounts of liquid droplets ejected from two ejection nozzles located at each innermost end of the heads is within a predetermined range of tolerance, and the amounts of liquid droplets ejected from two ejection nozzles located at the outermost ends in the direction of the nozzle row are within a predetermined range of a reference amount.
    Type: Application
    Filed: June 25, 2010
    Publication date: October 14, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Toru IGARASHI, Yuichiro IWAI
  • Patent number: 7771011
    Abstract: Provided herein is a method for arranging liquid droplet ejection heads comprising: arranging and fixing a plurality of inkjet liquid droplet ejection heads, ejecting a common functional liquid, on a common carriage plate, based on the amount of liquid droplets ejected from a number of ejecting nozzles in a nozzle row that each of the liquid droplet ejection heads has, with the heads shifted in a direction of the nozzle row, the heads being so arranged and fixed that in the heads closely aligned in the direction of the nozzle row, a difference between the amounts of liquid droplets ejected from two ejection nozzles located at each innermost end of the heads is within a predetermined range of tolerance, and the amounts of liquid droplets ejected from two ejection nozzles located at the outermost ends in the direction of the nozzle row are within a predetermined range of a reference amount.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: August 10, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Toru Igarashi, Yuichiro Iwai
  • Publication number: 20080297550
    Abstract: Provided herein is a method for arranging liquid droplet ejection heads comprising: arranging and fixing a plurality of inkjet liquid droplet ejection heads, ejecting a common functional liquid, on a common carriage plate, based on the amount of liquid droplets ejected from a number of ejecting nozzles in a nozzle row that each of the liquid droplet ejection heads has, with the heads shifted in a direction of the nozzle row, the heads being so arranged and fixed that in the heads closely aligned in the direction of the nozzle row, a difference between the amounts of liquid droplets ejected from two ejection nozzles located at each innermost end of the heads is within a predetermined range of tolerance, and the amounts of liquid droplets ejected from two ejection nozzles located at the outermost ends in the direction of the nozzle row are within a predetermined range of a reference amount.
    Type: Application
    Filed: May 22, 2008
    Publication date: December 4, 2008
    Applicant: Seiko Epson Corporation
    Inventors: Toru IGARASHI, Yuichiro Iwai
  • Patent number: 4105902
    Abstract: A touch sensitive input particularly suited for use with an electronic wristwatch, an electronic calculator or a combination thereof is provided. The touch sensitive input includes a touch sensitive contact connected to the input of a detector circuit, the detector circuit input being normally referenced to a first potential for producing a detector circuit output signal representative of the first potential. Engagement of the touch sensitive contact selectively references the detector circuit input to a second potential and in response thereto produces a detector circuit output signal representative of the second potential. The detector circuit includes at least an MOS or C-MOS input stage.
    Type: Grant
    Filed: October 8, 1976
    Date of Patent: August 8, 1978
    Assignee: Kabushiki Kaisha Suwa Seikosha
    Inventors: Yuichiro Iwai, Akio Shimoi, Yoshikazu Kawamura
  • Patent number: 4093992
    Abstract: An electronic wristwatch having calculator circuitry operated by the time standard signals utilized to operate the timekeeping circuitry is provided. The electronic wristwatch includes a timing pulse generating circuit for producing a plurality of signals. Timekeeping circuitry is coupled to the timing pulse time standard signals produced thereby, for producing a plurality of timekeeping signals representive of actual time in response to at least one of the time standard signals being applied thereto. A digital display is provided for displaying actual time in response to at least some of the plurality of timekeeping signals being applied thereto.
    Type: Grant
    Filed: November 8, 1976
    Date of Patent: June 6, 1978
    Assignee: Kabushiki Kaisha Suwa Seikosha
    Inventors: Yoshikazu Kawamura, Akio Shimoi, Yuichiro Iwai