Patents by Inventor Hiromitsu Yamaguchi

Hiromitsu Yamaguchi 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: 20150352756
    Abstract: The present invention provides an imprint apparatus which forms a pattern of an imprint material on a substrate using a mold, comprising a supply unit including a plurality of orifices and configured to supply the imprint material on the substrate by discharging the imprint material from each orifice, and a control unit configured to control the discharge of the imprint material from each orifice in accordance with arrangement information showing an arrangement of the imprint material on the substrate, wherein the control unit updates the arrangement information to bring a product of an ideal volume of the imprint material discharged from each orifice in one-time discharge and the number of discharges of the imprint material supplied on the substrate from the supply unit closer to a total amount of the imprint material actually supplied on the substrate in accordance with the arrangement information.
    Type: Application
    Filed: June 5, 2015
    Publication date: December 10, 2015
    Inventors: Hiromitsu Yamaguchi, Yoshikazu Miyajima
  • Patent number: 9162498
    Abstract: An ink jet printing apparatus and an image processing apparatus capable of stably outputting an image with no joint streak even in the case where printing conditions, such as the kind of ink and the kind of printing medium, change in a variety of ways are provided. For this purpose, correction processing is performed on image data corresponding to an eject port group located at one end part of an eject port column in a first printing scan and on image data corresponding to an eject port group located at the other end part in a second printing scan. At this time, the number of eject ports included in a first eject port group and the number of eject ports included in a second eject port group are adjusted in accordance with printing conditions.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: October 20, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiromitsu Yamaguchi, Yoshitomo Marumoto, Hitoshi Tsuboi, Ryota Kato, Takayuki Ushiyama
  • Patent number: 9085185
    Abstract: A printing apparatus that includes nozzle arrays, formed of nozzles for ejecting ink of the first to fourth ink color groups, and that scans a print medium while moving the nozzle arrays to perform printing. For printing a unit area of a print medium, where printing is to be completed by performing a plurality of scans, the printing apparatus performs a plurality of scans, and conveys, between movements, a print medium a predetermined amount, which is equivalent to the width of the unit area. Then, to perform a plurality of scans using the nozzle arrays for the first to fourth ink color groups, print data are generated, so that for the nozzle arrays that belong to two ink color groups, the nozzle array for the first ink color group is employed to eject ink into the unit area prior to the nozzle array for the second ink color group.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: July 21, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshitomo Marumoto, Hiromitsu Yamaguchi, Ryota Kato, Hitoshi Tsuboi, Yohei Masada
  • Patent number: 9073340
    Abstract: A printing apparatus that includes nozzle arrays, formed of nozzles for ejecting ink of the first to fourth ink color groups, and that scans a print medium while moving the nozzle arrays to perform printing. For printing a unit area of a print medium, where printing is to be completed by performing a plurality of scans, the printing apparatus performs a plurality of scans, and conveys, between movements, a print medium a predetermined amount, which is equivalent to the width of the unit area. Then, to perform a plurality of scans using the nozzle arrays for the first to fourth ink color groups, print data are generated, so that for the nozzle arrays that belong to two ink color groups, the nozzle array for the first ink color group is employed to eject ink into the unit area prior to the nozzle array for the second ink color group.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: July 7, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshitomo Marumoto, Hiromitsu Yamaguchi, Ryota Kato, Hitoshi Tsuboi, Yohei Masada
  • Publication number: 20150178599
    Abstract: An ink jet printing apparatus and an ink jet printing method capable of suppressing the occurrence of the texture or the feeling of granularity at a joint part even in the case where a thinning ratio in a boundary region is adjusted in order to reduce a joint streak are provided. To achieve such purposes, one dot arrangement pattern is set from a plurality of dot arrangement patterns for each pixel in accordance with a gradation level and a position on a printing medium. At this time, in a pixel region located at the joint part, a second dot arrangement pattern whose number of dots is different from a first dot arrangement pattern, which is set in the pixel region located at apart other than the joint part, is arranged so that low frequency components are less than high frequency components.
    Type: Application
    Filed: December 9, 2014
    Publication date: June 25, 2015
    Inventors: Takayuki Ushiyama, Yoshitomo Marumoto, Hiromitsu Yamaguchi, Hitoshi Tsuboi, Ryota Kato
  • Publication number: 20150174929
    Abstract: An ink jet printing apparatus and an image processing apparatus capable of stably outputting an image with no joint streak by making the density uniform in the entire range in which the joint streak appears are provided. Consequently, the number of dots that are printed is adjusted for image data corresponding to the boundary part between printing scans performed twice and the vicinity thereof. At this time, a ration in which the number of dots that are printed in increased or decreased from a default value based the image data is changed stepwise toward a direction in which the distance from the boundary part increases. Due to this, adjustment of an appropriate number of dots in accordance with each position within the range in which the joint streak appears is performed, and therefore, it is possible to make the joint streak no longer conspicuous.
    Type: Application
    Filed: December 9, 2014
    Publication date: June 25, 2015
    Inventors: Hiromitsu Yamaguchi, Yoshitomo Marumoto, Hitoshi Tsuboi, Ryota Kato, Takayuki Ushiyama
  • Publication number: 20150174930
    Abstract: An ink jet printing apparatus and an image processing apparatus capable of stably outputting an image with no joint streak even in the case where printing conditions, such as the kind of ink and the kind of printing medium, change in a variety of ways are provided. For this purpose, correction processing is performed on image data corresponding to an eject port group located at one end part of an eject port column in a first printing scan and on image data corresponding to an eject port group located at the other end part in a second printing scan. At this time, the number of eject ports included in a first eject port group and the number of eject ports included in a second eject port group are adjusted in accordance with printing conditions.
    Type: Application
    Filed: December 9, 2014
    Publication date: June 25, 2015
    Inventors: Hiromitsu Yamaguchi, Yoshitomo Marumoto, Hitoshi Tsuboi, Ryota Kato, Takayuki Ushiyama
  • Patent number: 9061517
    Abstract: The present invention provides an inkjet printing apparatus and an inkjet printing method for printing a high-definition image while improving glossiness of the image surface without causing complication and enlargement of the apparatus. A plurality of inks are ejected from first and second printing heads so that a weighted average of a printing rate for each scan regarding an ink having the highest lightness becomes the largest among the plurality of inks and so that a maximum value regarding the printing rate of the ink having the highest lightness becomes larger than those of other inks.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: June 23, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryota Kato, Yoshitomo Marumoto, Hitoshi Tsuboi, Hiromitsu Yamaguchi, Yohei Masada
  • Patent number: 9056456
    Abstract: A recording apparatus that continuously vary a first boundary formed by different discharge port arrays in an area on a recording medium corresponding to a first overlap portion, and a second boundary formed by different discharge port arrays on an area of the recording medium corresponding to a second overlap portion close to the first overlap portion, wherein a shape of the variation of the first boundary and a shape of the variation of the second boundary are different from each other.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: June 16, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yoshitomo Marumoto, Hiromitsu Yamaguchi, Hitoshi Tsuboi, Ryota Kato, Takayuki Ushiyama
  • Patent number: 9050824
    Abstract: A printing apparatus performs printing using a print head in which a plurality of ejection port arrays are arranged in such a way as to form overlap portions. Ink is ejected such that a shape of a first boundary between images printed in a first unit region by ejection ports of a first ejection port array and a second ejection port array in an overlap portion and a shape of a second boundary between images printed in a second unit region in first and second operations of scanning continuously change in an array direction as positions of the first and second boundaries change in a cross direction and the shape of the second boundary becomes different from the shape of the first boundary.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: June 9, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshitomo Marumoto, Hiromitsu Yamaguchi, Hitoshi Tsuboi, Ryota Kato, Takayuki Ushiyama
  • Patent number: 9044947
    Abstract: An object of the present invention is to provide an ink jet printing apparatus which can prevent possible stripe-like density unevenness in a joint in a print head constructed by joining a plurality of chips together even if the print head is inclined to the regular position of the print head. The present invention uses a print head having the nozzle arrays being shifted in a direction in which the nozzles are arranged, so as to have overlapping portions in a direction orthogonal to the nozzle arranging direction. The present invention controls an ink ejecting operation of the nozzles in the overlapping portions between the plurality of nozzle arrays on the basis of an angle between the nozzle array arranging direction and a direction orthogonal to the direction in which the print head moves relative to the print medium.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: June 2, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Satoshi Wada, Hiromitsu Yamaguchi, Makoto Akahira
  • Publication number: 20150145909
    Abstract: A printing apparatus that includes nozzle arrays, formed of nozzles for ejecting ink of the first to fourth ink color groups, and that scans a print medium while moving the nozzle arrays to perform printing. For printing a unit area of a print medium, where printing is to be completed by performing a plurality of scans, the printing apparatus performs a plurality of scans, and conveys, between movements, a print medium a predetermined amount, which is equivalent to the width of the unit area. Then, to perform a plurality of scans using the nozzle arrays for the first to fourth ink color groups, print data are generated, so that for the nozzle arrays that belong to two ink color groups, the nozzle array for the first ink color group is employed to eject ink into the unit area prior to the nozzle array for the second ink color group.
    Type: Application
    Filed: January 30, 2015
    Publication date: May 28, 2015
    Inventors: Yoshitomo Marumoto, Hiromitsu Yamaguchi, Ryota Kato, Hitoshi Tsuboi, Yohei Masada
  • Publication number: 20150124014
    Abstract: A recording apparatus that continuously vary a first boundary formed by different discharge port arrays in an area on a recording medium corresponding to a first overlap portion, and a second boundary formed by different discharge port arrays on an area of the recording medium corresponding to a second overlap portion close to the first overlap portion, wherein a shape of the variation of the first boundary and a shape of the variation of the second boundary are different from each other.
    Type: Application
    Filed: November 3, 2014
    Publication date: May 7, 2015
    Inventors: Yoshitomo Marumoto, Hiromitsu Yamaguchi, Hitoshi Tsuboi, Ryota Kato, Takayuki Ushiyama
  • Publication number: 20140184679
    Abstract: A printing apparatus performs printing using a print head in which a plurality of ejection port arrays are arranged in such a way as to form overlap portions. Ink is ejected such that a shape of a first boundary between images printed in a first unit region by ejection ports of a first ejection port array and a second ejection port array in an overlap portion and a shape of a second boundary between images printed in a second unit region in first and second operations of scanning continuously change in an array direction as positions of the first and second boundaries change in a cross direction and the shape of the second boundary becomes different from the shape of the first boundary.
    Type: Application
    Filed: December 26, 2013
    Publication date: July 3, 2014
    Inventors: Yoshitomo Marumoto, Hiromitsu Yamaguchi, Hitoshi Tsuboi, Ryota Kato, Takayuki Ushiyama
  • Patent number: 8740329
    Abstract: An inkjet printing apparatus that prints each raster in a multi-pass printing mode by causing a printhead having a plurality of nozzles forming a nozzle array to scan in a direction intersecting with the nozzle array is provided, in which the nozzles are divided into groups, each including adjacent nozzles, one nozzle selected from each group is united into one block, drive of nozzles is controlled such that drive timings of nozzles differ among a plurality of blocks in each group, and a sequence in which nozzles are driven is determined for each scan in the multi-pass printing mode such that printed dots are most equally printed in the raster.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: June 3, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiromitsu Yamaguchi, Yoshitomo Marumoto
  • Patent number: 8740351
    Abstract: The present invention provides an ink jet printing system and method which allows high-quality images to be printed while improving the gloss of an image surface, as well as a relevant storage medium. According to the present invention, an image is printed using a print head including multiple nozzle arrays provided for ink in respective multiple colors and in each of which multiple nozzles configured to eject ink are arranged; the print head ejects the ink in the multiple colors onto the same print area on a print medium during multiple scans. The multiple types of ink are ejected from the print head so that the connectivity of ink dots formed on the front outermost surface of a print area is higher than that of other ink dots formed in the print area.
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: June 3, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hitoshi Tsuboi, Yoshitomo Marumoto, Hiromitsu Yamaguchi, Ryota Kato, Yohei Masada
  • Patent number: 8736865
    Abstract: In order to vary a threshold value for performing an error diffusion process depending on a pixel position, a threshold value matrix configured to have pluralities of rows and columns is prepared. In this case, pieces of data in the threshold value matrix are arrayed such that average values in the respective rows and average values in the respective columns are almost the same value. If such a threshold value matrix is used to perform the error diffusion process, the dot sparseness and denseness do not occur with a period of the matrix, and therefore the pattern or sweeping phenomenon specific to the error diffusion can be suppressed.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: May 27, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiromitsu Yamaguchi, Yoshitomo Marumoto, Hitoshi Tsuboi
  • Patent number: 8721017
    Abstract: The present invention forms a high-quality image by using a print head, in which a plurality of arrayed small heads, each having a plurality of print elements arranged in columns, are arranged so that at least two sets of print elements in adjoining small heads are aligned in a scan direction. The print head and a print medium are moved relative to each other in the scan direction crossing a direction of the print element columns. The print elements are divided into a plurality of drive blocks and activated the drive blocks on a time-division basis. The small heads each have the plurality of print elements arranged in columns, the number of print elements being equal to an integer times the number of time-division drive blocks. Drive timings with which to activate the paired print elements aligned in the scan direction are the same time-division drive timing.
    Type: Grant
    Filed: September 23, 2013
    Date of Patent: May 13, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiromitsu Yamaguchi, Makoto Akihira, Satoshi Wada
  • Patent number: 8633673
    Abstract: The apparatus includes an AC adapter input, a battery charger coupled to the input to charge a battery, a temperature sensor, and system logic to execute code stored on storage devices. The battery charger provides a charging current that is a function of temperature sensed by the temperature sensor. The charging current may also be a function of sensed barometric pressure, battery age, external temperature, a full charge capacity, and system power demand.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: January 21, 2014
    Assignee: Lenovo (Singapore) Pte. Ltd.
    Inventors: Kenneth Scott Seethaler, Larry Glenn Estes, Jeremy Robert Carlson, Bouziane Yebka, Joseph Anthony Holung, Hiromitsu Yamaguchi, Tin-Lup Wong
  • Publication number: 20140015888
    Abstract: The present invention forms a high-quality image by using a print head, in which a plurality of arrayed small heads, each having a plurality of print elements arranged in columns, are arranged so that at least two sets of print elements in adjoining small heads are aligned in a scan direction. The print head and a print medium are moved relative to each other in the scan direction crossing a direction of the print element columns. The print elements are divided into a plurality of drive blocks and activated the drive blocks on a time-division basis. The small heads each have the plurality of print elements arranged in columns, the number of print elements being equal to an integer times the number of time-division drive blocks. Drive timings with which to activate the paired print elements aligned in the scan direction are the same time-division drive timing.
    Type: Application
    Filed: September 23, 2013
    Publication date: January 16, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: HIROMITSU YAMAGUCHI, MAKOTO AKAHIRA, SATOSHI WADA