Patents by Inventor Kazuki YAMANAKA

Kazuki YAMANAKA 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: 11077690
    Abstract: A printing apparatus of this invention scans with a tester a testing chart printed by a printing controller to acquire testing image data. A total amount of displacement calculator calculates an amount of displacement of a recording position including a direction of misregister as a total amount of displacement, based on a large amount of displacement determined by a large amount of displacement determiner, a direction of displacement detected by a direction of displacement detector, a shift amount corresponding to an amount of displacement detecting chart determined by an amount of displacement detecting chart determiner, and a peak position of the amount of displacement detecting chart determined by the amount of displacement detecting chart determining unit. Thus, since a total amount of displacement of the misregister can be calculated only by printing the testing chart on web paper WP, an amount of displacement of the misregister in the transport direction can be obtained easily in a short time.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: August 3, 2021
    Assignee: SCREEN HOLDINGS CO., LTD.
    Inventors: Asuka Muramatsu, Kazuki Fukui, Tomotaka Kato, Kazuki Yamanaka, Seiya Nomura, Takaharu Yamamoto
  • Publication number: 20180272775
    Abstract: A printing apparatus of this invention scans with a tester a testing chart printed by a printing controller to acquire testing image data. A total amount of displacement calculator calculates an amount of displacement of a recording position including a direction of misregister as a total amount of displacement, based on a large amount of displacement determined by a large amount of displacement determiner, a direction of displacement detected by a direction of displacement detector, a shift amount corresponding to an amount of displacement detecting chart determined by an amount of displacement detecting chart determiner, and a peak position of the amount of displacement detecting chart determined by the amount of displacement detecting chart determining unit. Thus, since a total amount of displacement of the misregister can be calculated only by printing the testing chart on web paper WP, an amount of displacement of the misregister in the transport direction can be obtained easily in a short time.
    Type: Application
    Filed: September 20, 2016
    Publication date: September 27, 2018
    Inventors: Asuka MURAMATSU, Kazuki FUKUI, Tomotaka KATO, Kazuki YAMANAKA, Seiya NOMURA, Takahar YAMAMOTO
  • Patent number: 9545801
    Abstract: Provided is a printing method of performing printing onto a recording medium to be transported with a plurality of recording element arrays. The printing method includes a storing step of storing a perimeter of a timing roller upon acquiring correction data in association with the correction data, an obtaining step of obtaining the perimeter during printing after the storing step of storing the perimeter upon acquiring the correction data, and a modifying step of modifying the correction data during the printing in accordance with the perimeter upon acquiring the correction data and the perimeter during the printing.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: January 17, 2017
    Assignees: SCREEN Holdings Co., Ltd., RICOH COMPANY, LTD.
    Inventors: Seiya Nomura, Kazuki Yamanaka, Osamu Morizono, Kunio Muraji
  • Patent number: 9296229
    Abstract: In printing apparatus, an edge sensor detects a serpentine amount caused by transportation of a web. A predicted waveform data generating unit generates predicted waveform data on the serpentine amount to be produced in the following web in accordance with actually measured waveform data on the detected serpentine amount. A correcting unit corrects a printing position of an image in accordance with a shift amount, and applies a corrected printing position to a printing head. Here, the shift amount is determined with the shift amount determining unit in accordance with the predicted waveform data. Accordingly, the shift amount is determinable in accordance with the actually measured waveform data on the serpentine amount detected with the edge sensor more accurately than that through a method in which a shift amount is directly determined. This allows suppressed misregister.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: March 29, 2016
    Assignees: SCREEN Holdings Co., Ltd., RICOH COMPANY, LTD.
    Inventors: Kazuki Fukui, Kazuki Yamanaka, Kunio Muraji, Mitsuhiro Yoshida, Takashi Kamigiku
  • Publication number: 20160075155
    Abstract: In printing apparatus, an edge sensor detects a serpentine amount caused by transportation of a web. A predicted waveform data generating unit generates predicted waveform data on the serpentine amount to be produced in the following web in accordance with actually measured waveform data on the detected serpentine amount. A correcting unit corrects a printing position of an image in accordance with a shift amount, and applies a corrected printing position to a printing head. Here, the shift amount is determined with the shift amount determining unit in accordance with the predicted waveform data. Accordingly, the shift amount is determinable in accordance with the actually measured waveform data on the serpentine amount detected with the edge sensor more accurately than that through a method in which a shift amount is directly determined. This allows suppressed misregister.
    Type: Application
    Filed: September 11, 2015
    Publication date: March 17, 2016
    Applicant: SCREEN Holdings Co., Ltd.
    Inventors: Kazuki FUKUI, Kazuki YAMANAKA, Kunio MURAJI, Mitsuhiro YOSHIDA, Takashi KAMIGIKU
  • Publication number: 20160078330
    Abstract: Provided is a printing method of performing printing onto a recording medium to be transported with a plurality of recording element arrays. The printing method includes a storing step of storing a perimeter of a timing roller upon acquiring correction data in association with the correction data, an obtaining step of obtaining the perimeter during printing after the storing step of storing the perimeter upon acquiring the correction data, and a modifying step of modifying the correction data during the printing in accordance with the perimeter upon acquiring the correction data and the perimeter during the printing.
    Type: Application
    Filed: August 3, 2015
    Publication date: March 17, 2016
    Inventors: Seiya NOMURA, Kazuki YAMANAKA, Osamu MORIZONO, Kunio MURAJI
  • Publication number: 20150316920
    Abstract: A positioning apparatus is provided that starts positioning control according to output of a positioning command in accordance with input of an external input signal from an external sensor. The positioning apparatus includes an external input unit, a timer unit that counts a period of time that starts when the external input signal is input to the external input unit, a memory that stores a setting timer value that is set, using a positioning control program, as delay time for delaying the start of the positioning control and positioning command data calculated by an arithmetic processing unit, and a positioning command output unit that output the positioning command on the basis of the positioning command data stored in the memory to a target to be controlled. The positioning command output unit outputs the positioning command when a count value of the timer unit agrees with the setting timer value retained in the memory.
    Type: Application
    Filed: December 25, 2012
    Publication date: November 5, 2015
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kazuki YAMANAKA, Junji YAMAMOTO, Koichi KAKIMOTO
  • Patent number: 9085169
    Abstract: Provided is an inkjet printing apparatus configured to perform printing by discharging ink droplets onto a print medium. The apparatus includes a printing head having a plurality of inkjet heads and configured to perform printing by discharging the ink droplets from the plurality of inkjet heads onto the print medium; a chart printing device configured to print a step-shift correcting chart with the printing head; a reading device configured to read the step-shift correcting chart printed on the print medium; a print medium-processed portion detecting device configured to detect a processed portion of the print medium; an uninfluenced step-shift correcting-chart generating device configured to generate an uninfluenced step-shift correcting chart; and a shift-amount calculating device configured to calculate a shift amount for correcting the step shift in accordance with the uninfluenced step-shift correcting chart.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: July 21, 2015
    Assignees: SCREEN Holdings Co., Ltd., Ricoh Company, Ltd.
    Inventors: Kazuki Yamanaka, Seiya Nomura
  • Patent number: 9067412
    Abstract: A printing apparatus performing printing to a print medium includes a printer having at least two line heads with a plurality of recording modules; a scanner configured to scan an image printed with the printer to obtain a scanned image; a correcting-chart printing unit configured to print first and second correcting charts in first and second line head printing areas, respectively; a scanned image collecting unit configured to collect first and second scanned images; a correction-data calculating device configured to calculate correction data by determining a reference head difference from the first scanned image, determining an individual head difference from the second scanned image, summing up the reference head difference and the individual head difference to obtain a total, the reference head difference and the total being regarded as the correction data for the first and second line heads, respectively; and an adjusting device configured to adjust a timing.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: June 30, 2015
    Assignees: SCREEN Holdings Co., Ltd., Ricoh Company, Ltd.
    Inventors: Kazuki Yamanaka, Seiya Nomura
  • Publication number: 20150091963
    Abstract: A printing apparatus performing printing to a print medium includes a printer having at least two line heads with a plurality of recording modules; a scanner configured to scan an image printed with the printer to obtain a scanned image; a correcting-chart printing unit configured to print first and second correcting charts in first and second line head printing areas, respectively; a scanned image collecting unit configured to collect first and second scanned images; a correction-data calculating device configured to calculate correction data by determining a reference head difference from the first scanned image, determining an individual head difference from the second scanned image, summing up the reference head difference and the individual head difference to obtain a total, the reference head difference and the total being regarded as the correction data for the first and second line heads, respectively; and an adjusting device configured to adjust a timing
    Type: Application
    Filed: May 21, 2014
    Publication date: April 2, 2015
    Applicant: DAINIPPON SCREEN MFG. CO., LTD.
    Inventors: Kazuki YAMANAKA, Seiya NOMURA
  • Publication number: 20150029256
    Abstract: Provided is an inkjet printing apparatus configured to perform printing by discharging ink droplets onto a print medium. The apparatus includes a printing head having a plurality of inkjet heads and configured to perform printing by discharging the ink droplets from the plurality of inkjet heads onto the print medium; a chart printing device configured to print a step-shift correcting chart with the printing head; a reading device configured to read the step-shift correcting chart printed on the print medium; a print medium-processed portion detecting device configured to detect a processed portion of the print medium; an uninfluenced step-shift correcting-chart generating device configured to generate an uninfluenced step-shift correcting chart; and a shift-amount calculating device configured to calculate a shift amount for correcting the step shift in accordance with the uninfluenced step-shift correcting chart.
    Type: Application
    Filed: May 21, 2014
    Publication date: January 29, 2015
    Applicant: DAINIPPON SCREEN MFG. CO., LTD.
    Inventors: Kazuki YAMANAKA, Seiya NOMURA