Patents by Inventor Ryosuke Otani

Ryosuke Otani 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: 20210316417
    Abstract: A cover may be used in a tool with a tip tool. The cover may include an inner cover covering at least a part of the tip tool and an outer cover covering at least a part of the inner cover. In the cover, a space between the inner cover and the outer cover may constitute a suction path through which suctioned air flows. In the cover, a shape of the suction path may be changeable by a change in a relative positional relationship between the inner cover and the outer cover.
    Type: Application
    Filed: August 1, 2019
    Publication date: October 14, 2021
    Applicant: MAKITA CORPORATION
    Inventor: Ryosuke OTANI
  • Publication number: 20210260722
    Abstract: A wheel cover including a first cover attachable to a body of a power tool and a second cover removably attachable to the first cover reduces rattling of the second cover. The wheel cover includes a first cover attachable to a body of the power tool to cover at least a portion of a first surface of the tip tool adjacent to the body of the power tool, a second cover removably attachable to the first cover to cover at least a portion of a second surface of the tip tool opposite to the body of the power tool, and a rattle restrainer that reduces, while the second cover is attached to the first cover, rattling of the second cover relative to the first cover.
    Type: Application
    Filed: July 11, 2019
    Publication date: August 26, 2021
    Applicant: MAKITA CORPORATION
    Inventor: Ryosuke OTANI
  • Patent number: 11090946
    Abstract: Density unevenness accompanying a variation in an ejection characteristic of each nozzle is reduced without worsening granularity of an image. To this end, an image processing apparatus generates first corrected data by correcting image data by using a first correction table common to the plurality of nozzles. Further, the image processing apparatus generates second corrected data by correcting the image data by using a second correction table for each of the plurality of nozzles. Furthermore, the image processing apparatus generates first quantized data by quantizing the first corrected data and generates second quantized data by quantizing the second corrected data. After that, the image processing apparatus generates N-valued print data based on the first quantized data and the second quantized data.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: August 17, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Ryosuke Otani, Hisashi Ishikawa
  • Publication number: 20210220959
    Abstract: A power tool, such as a grinder, may include: a prime mover such as a motor; a power-transmission mechanism operably connected to the prime mover; a housing that houses the prime mover and the power-transmission mechanism; and a tool-accessory retaining part for holding a tool accessary. The tool-accessory retaining part is operably connected to the power-transmission mechanism. An accessory is mounted on the housing in a detachable manner. A link member moves in response to mounting and demounting of the accessory. A detection sensor is housed in an interior of the housing and includes a non-contact sensor device. The detection sensor is configured to detect movement of the link member using the non-contact sensor device.
    Type: Application
    Filed: September 6, 2019
    Publication date: July 22, 2021
    Inventors: Takashi MATSUBARA, Shunpei YAMAJI, Akira MIZUTANI, Ryosuke OTANI, Hiroki KANEKO
  • Publication number: 20210203807
    Abstract: An image processing apparatus generates image data for an image forming apparatus having a recording head with recording elements in a first direction that forms an image on a recording medium by ejecting ink from the elements toward the medium fed in a second direction perpendicular to the first. The apparatus has an acquiring unit that acquires multi-valued input image data having tones, a conversion unit that converts the input image data into halftone image data indicating a dot pattern, by using a dither matrix, and a correction processing unit that executes a density unevenness correction process in accordance with properties of each of the recording elements. The properties of the elements are obtained by reading a chart image formed based on the halftone image data. The dither matrix is a dispersive dither matrix with a size of Sx rows corresponding to the second direction, Sx, a natural number.
    Type: Application
    Filed: March 10, 2021
    Publication date: July 1, 2021
    Inventor: Ryosuke Otani
  • Patent number: 11020985
    Abstract: The image processing apparatus includes: an acquisition unit configured to acquire a pixel value group consisting of pixel values of a plurality of pixels included in a predetermined target area in image data; an acquisition unit configured to acquire a threshold value group consisting of a plurality of threshold values corresponding to the plurality of pixels; a calculation unit configured to calculate a target number of dots indicating a number of dots to be arranged within the target area; an acquisition unit configured to acquire a pixel position at which a dot is expected to be formed by a non-ejectable nozzle in the image data as a non-ejectable nozzle position; and determination unit configured to determine arrangement of dots in the target area based on a priority level determined based on the pixel value group and the threshold value group, the target number of dots, and the non-ejectable nozzle position.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: June 1, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Ryosuke Otani, Tomoya Kiriyama, Hisashi Ishikawa
  • Publication number: 20210158112
    Abstract: To implement non-ejection complementation processing while securing a chance for a nozzle in which an ejection failure has occurred to recover as a normal nozzle. Positional information for specifying an abnormal nozzle in which an ejection failure has occurred among a plurality of nozzles arrayed in a nozzle column is acquired and based on the positional information, input image data is converted into halftone image data. At this time, at least part of densities that are assumed to be obtained by a pixel line of the abnormal nozzle are distributed to pixels on a pixel line of a neighboring nozzle that is located in close proximity to the abnormal nozzle and in which no ejection failure has occurred so that in the halftone image data, at least in part of tones, the pixel on the pixel line of the abnormal nozzle has a density.
    Type: Application
    Filed: November 9, 2020
    Publication date: May 27, 2021
    Inventors: Ryosuke Otani, Hisashi Ishikawa
  • Publication number: 20210155009
    Abstract: In a case where a line drawing, such as a thin line, is included within input image data, the output of a non-ejectable nozzle is compensated for while suppressing deterioration of reproducibility thereof. Based on positional information for specifying an abnormal nozzle in which an ejection failure has occurred among a plurality of nozzles arrayed in a nozzle column, a pixel value of a pixel on a pixel line corresponding to the abnormal nozzle and a pixel value of a pixel on a pixel line corresponding to another nozzle that is located in close proximity to the abnormal nozzle and in which no ejection failure has occurred are exchanged for the input image data. Then, halftone image data is generated by performing halftone processing for the input image data for which pixel value exchange has been performed.
    Type: Application
    Filed: October 27, 2020
    Publication date: May 27, 2021
    Inventor: Ryosuke Otani
  • Publication number: 20210094138
    Abstract: A power tool may include: a motor; a power transmission mechanism connected to the motor; a housing that houses the motor and the power transmission mechanism; a tip tool holder connected to the power transmission mechanism and holding a tip tool; and a cover covering at least a part of the tip tool. The cover may include: a fixed cover portion fixed to the housing; a movable cover portion movable with respect to the fixed cover portion; and an operation member mechanically connected to the movable cover portion and configured to move the movable cover portion with respect to the fixed cover portion.
    Type: Application
    Filed: December 26, 2018
    Publication date: April 1, 2021
    Applicant: MAKITA CORPORATION
    Inventors: Ryo IMUTA, Ryosuke OTANI
  • Patent number: 10965836
    Abstract: An image processing apparatus generates image data for an image forming apparatus having a recording head with recording elements in a first direction that forms an image on a recording medium by ejecting ink from the elements toward the medium fed in a second direction perpendicular to the first. The apparatus has an acquiring unit that acquires multi-valued input image data having a uniform tone, a conversion unit that converts the input image data into halftone image data indicating a dot pattern, by using a dither matrix, and a correction processing unit that executes a density unevenness correction process in accordance with properties of each of the elements. The properties of the elements are obtained by reading a chart image formed based on the halftone image data. The dither matrix is a dispersive dither matrix with a size of Sx rows corresponding to the second direction, Sx, a natural number.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: March 30, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventor: Ryosuke Otani
  • Publication number: 20210053175
    Abstract: A hand-held tool, such as a disc grinder, is used to perform work at a high work site, a countermeasure is taken to prevent the hand-held tool from falling by using a suspension tool, such as a tether strap. If a coupling part that couples the suspension tool to the hand-held tool is damaged, this fact is notified to a user. Thereby, an original function of the suspension tool can be reliably performed. If a large impact is applied to a coupling member via a suspension tool, the coupling member is displaced to a second position, due to the deformation of a first position retaining member. A conductive portion disengages from contacts to cause a power circuit to be shut off, thereby prohibiting a main body part from being activated.
    Type: Application
    Filed: March 27, 2019
    Publication date: February 25, 2021
    Applicant: MAKITA CORPORATION
    Inventors: Ryosuke OTANI, Junya ISHIKAWA, Takafumi KOTSUJI, Satoshi NINAGAWA, Ken GOTO, Yu ETO
  • Publication number: 20200349405
    Abstract: An image processing apparatus that generates image data to be output to an image forming apparatus printing an image, and includes: a generation unit configured to generate, based on an input image, first generation amount data indicating a generation amount of each of one or more kinds of ink dot for each pixel and second generation amount data indicating a generation amount of a blank dot for which the ink dot is not formed for each pixel; and a processing unit configured to determine a dot arrangement pattern indicating an arrangement of each of the one or more kinds of ink dot by performing quantization processing using the first generation amount data and the second generation amount data.
    Type: Application
    Filed: July 21, 2020
    Publication date: November 5, 2020
    Inventors: Ryosuke Otani, Hisashi Ishikawa
  • Publication number: 20200247137
    Abstract: The image processing apparatus includes: an acquisition unit configured to acquire a pixel value group consisting of pixel values of a plurality of pixels included in a predetermined target area in image data; an acquisition unit configured to acquire a threshold value group consisting of a plurality of threshold values corresponding to the plurality of pixels; a calculation unit configured to calculate a target number of dots indicating a number of dots to be arranged within the target area; an acquisition unit configured to acquire a pixel position at which a dot is expected to be formed by a non-ejectable nozzle in the image data as a non-ejectable nozzle position; and determination unit configured to determine arrangement of dots in the target area based on a priority level determined based on the pixel value group and the threshold value group, the target number of dots, and the non-ejectable nozzle position.
    Type: Application
    Filed: January 24, 2020
    Publication date: August 6, 2020
    Inventors: Ryosuke Otani, Tomoya Kiriyama, Hisashi Ishikawa
  • Patent number: 10708466
    Abstract: An image processing apparatus according to an embodiment of the present invention includes: a first generation unit that generates a low-frequency image by extracting a low-frequency component from an input image; a second generation unit that generates a high-frequency image by extracting a high-frequency component from the input image; a screen processing unit that generates an AM screen image by performing AM screen processing on the low-frequency image; an addition processing unit that generates an added image by adding the high-frequency image to the AM screen image; and a correction unit that corrects the added image.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: July 7, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Ryosuke Otani
  • Patent number: 10671006
    Abstract: The image processing apparatus of the present invention includes: an edge determination unit configured to detect an edge pixel to which a white pixel and a black pixel are adjacent in a first direction in an image in which each pixel is represented as a white pixel or a black pixel; a first detection unit configured to detect a number of consecutive pixels up to the edge pixel in the first direction in the image; a second detection unit configured to detect a number of consecutive pixels whose number of consecutive pixels in the first direction is larger than a first threshold in a second direction perpendicular to the first direction in the image; and a type determination unit configured to determine a type of the edge pixel based on detection results by the first detection unit and detection results by the second detection unit.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: June 2, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Ryosuke Otani, Yoichi Takikawa, Hisashi Ishikawa
  • Publication number: 20200156386
    Abstract: Density unevenness accompanying a variation in an ejection characteristic of each nozzle is reduced without worsening granularity of an image. To this end, an image processing apparatus generates first corrected data by correcting image data by using a first correction table common to the plurality of nozzles. Further, the image processing apparatus generates second corrected data by correcting the image data by using a second correction table for each of the plurality of nozzles. Furthermore, the image processing apparatus generates first quantized data by quantizing the first corrected data and generates second quantized data by quantizing the second corrected data. After that, the image processing apparatus generates N-valued print data based on the first quantized data and the second quantized data.
    Type: Application
    Filed: November 14, 2019
    Publication date: May 21, 2020
    Inventors: Ryosuke Otani, Hisashi Ishikawa
  • Publication number: 20200086455
    Abstract: A grinder includes a brake mechanism, a switch lever, and a slide bar. In the grinder, an interlocking mechanism configured to interlock the brake mechanism with the switch lever includes a link member that is interposed between the switch lever and the slide bar, that moves the slide bar to the forward position at the push-in position of the switch lever, and that moves the slide bar to the retraction position at the initial position of the switch lever.
    Type: Application
    Filed: November 20, 2017
    Publication date: March 19, 2020
    Applicant: MAKITA CORPORATION
    Inventors: Junichi IWAKAMI, Hideharu MUTO, Ryosuke OTANI
  • Patent number: 10556319
    Abstract: A grinder includes a motor, a housing, a spindle and a cover. The spindle protrudes downward from the housing, is driven by the motor, and thereby rotates. The cover at least partially covers a tool accessory mounted on the spindle. The cover includes a first cover part and a second cover part. The first cover part is fixed to the housing and at least partially covers the tool accessory from above. The second cover part is held such that it is capable of moving relative to the first cover part. The grinder is configured such that the area of the tool accessory covered by the cover changes in accordance with the relative movement.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: February 11, 2020
    Assignee: MAKITA CORPORATION
    Inventors: Junichi Iwakami, Hideharu Muto, Naoki Soeda, Ryosuke Otani
  • Patent number: 10545446
    Abstract: The present invention performs inplane uneven density correction that suppresses a number of tone correction properties and has few correction residuals. Accordingly, a holding unit of an apparatus of the present invention holds a plurality of tone correction properties respectively corresponding to a plurality of spot diameters that divide a range of a spot diameter of a light exposed on a surface of a photoreceptor by a predetermined interval. In addition a setting unit sets a tone correction property selected from the plurality of tone correction properties based on a spot diameter on the photoreceptor for a pixel corresponding to pixel data C. A correction unit corrects the pixel data C based on the set tone correction property, to generate tone correction data Cc.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: January 28, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yoichi Takikawa, Ryosuke Otani, Hidenori Kanazawa, Go Araki, Hisashi Ishikawa
  • Publication number: 20200028988
    Abstract: A processing apparatus comprises a correction processor which executes a density unevenness correction process in accordance with properties of each of recording elements included in a recording head of an recoding apparatus, and a convertor which converts the image data, on which the density unevenness correction processing has been executed, into halftone image data, by using a dither matrix, wherein the dither matrix is a dispersive dither matrix, and has characteristics in which when input image data having a uniform tone is converted into binary halftone image data, the same number of dots are present at each of locations in a first direction, in a predetermined range in a second direction, for a tone, among the tones which the input image data can take on, that is subject to the density unevenness correction process.
    Type: Application
    Filed: July 10, 2019
    Publication date: January 23, 2020
    Inventor: Ryosuke Otani