Patents by Inventor Shigetoshi Hosaka

Shigetoshi Hosaka 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: 8186793
    Abstract: An image forming method is disclosed in which an image is formed on commercial printing paper using a high penetration pigmented ink by performing image processing which makes use of dot patterns corresponding to an output halftone level.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: May 29, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Shigetoshi Hosaka, Masakazu Yoshida, Takashi Kimura, Masanori Hirano, Takahiro Ike, Naoya Morohoshi, Tomohiro Inoue, Michio Umezawa, Takashi Mori
  • Patent number: 8141982
    Abstract: An imaging apparatus is disclosed that includes plural heads that are arranged in a main scanning direction, the heads including plural nozzle arrays that are arranged in the main scanning direction and configured to discharge droplets of recording liquids in at least three different colors including a yellow recording liquid. At least two of the nozzle arrays that are configured to discharge the yellow recording liquid are separately arranged in at least two of the heads. At least two of the nozzle arrays that are configured to discharge a first recording liquid of the recording liquids in a first color other than yellow are arranged together in one of the heads. At least two of the nozzle arrays that are configured to discharge a second recording liquid of the recording liquids in a second color other than yellow are arranged together in one of the heads.
    Type: Grant
    Filed: February 11, 2010
    Date of Patent: March 27, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Naoki Nakano, Shigetoshi Hosaka, Takashi Kimura, Yoshihisa Ohta, Toshihito Kamei, Masakazu Yoshida
  • Publication number: 20110273746
    Abstract: A disclosed image processing apparatus performs an image processing operation to execute double-side printing on both sides of an image forming medium. The image processing apparatus forms a dot font including a dot pattern of a character in a character image that has undergone a halftone process using a predetermined coefficient for mitigating show-through when the double-side printing is performed; forms a correction dot for making a correction to reduce step-like irregularities along an outline portion of the character in the character image, which correction dot is formed based on an arrangement position, a color, and a dot size of the correction dot for reproducing a gradation that has undergone the halftone process using said predetermined coefficient; and combines the dot font and the correction dot.
    Type: Application
    Filed: August 5, 2008
    Publication date: November 10, 2011
    Inventors: Yoshiaki Hoshino, Takashi Kimura, Masanori Hirano, Taku Satoh, Shigetoshi Hosaka, Masakazu Yoshida, Naoki Nakano, Shigetaka Sakakibara
  • Patent number: 8040567
    Abstract: An image processing method configured to produce image data output from an image forming apparatus configured to form an image by using a recording head composed of a liquid ejecting head having plural arranged nozzles configured to eject a liquid drop and an energy generating device configured to generate ejection energy corresponding to each nozzle while conducting a halftone processing configured to covert input image data to an N value which is less than a tone (M value) thereof (N value: M>N?2) is provided, wherein a halftone processing configured to substantially reduce a driving frequency of a driving wave pattern applied to the energy generating device is conducted when a liquid drop with a drop size causing ejection irregularity or a liquid drop from a nozzle causing ejection irregularity is ejected.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: October 18, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Shigetoshi Hosaka, Masakazu Yoshida, Taku Satoh, Takashi Kimura
  • Patent number: 8008184
    Abstract: A seed layer is formed on a surface of an insulating film and along a recess of the insulating film, and after a copper wiring is buried in the recess, a barrier film is formed, and an excessive metal is removed from the wiring. On a surface of a copper lower layer conductive path exposed at the bottom of the recess, a natural oxide of the copper is reduced or removed. On a substrate from which the natural oxide is reduced or removed, the seed layer, composed of a self-forming barrier metal having oxidative tendency higher than that of copper or an alloy of such metal and copper, is formed. The substrate is heated after burying copper in the recess. Thus, a barrier layer is formed by oxidizing the self-forming barrier metal. An excessive portion of the self-forming barrier metal is deposited on a surface of the buried copper.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: August 30, 2011
    Assignees: Tokyo Electron Limited, Tohoku University
    Inventors: Kenji Matsumoto, Shigetoshi Hosaka, Junichi Koike, Koji Neishi
  • Patent number: 7982915
    Abstract: A disclosed inkjet recording apparatus for performing recording by jetting a recording liquid onto a recording medium includes an image processing unit configured to obtain an output halftone level by performing halftone processing on input image data, to select a dot arrangement order according to the obtained output halftone level, and thereby to generate dot data where dots are arranged in a grid-like pattern. The disclosed inkjet recording apparatus is configured to use a pigmented ink as the recording liquid when the recording medium is a commercial printing paper, and to record the dots in a staggered arrangement where positions of the dots in odd/even-numbered columns or odd/even-numbered rows in the dot data are shifted in a sub-scanning direction or in a main-scanning direction.
    Type: Grant
    Filed: April 3, 2007
    Date of Patent: July 19, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Naoki Nakano, Masakazu Yoshida, Takashi Kimura, Masanori Hirano, Takahiro Ike, Shigetoshi Hosaka
  • Patent number: 7924465
    Abstract: A disclosed dither matrix is used in halftone processing for converting input image data having M input halftone levels into output image data having N (M>N>2) output halftone levels. In the halftone processing, a concentration type dither matrix is used as the dither matrix when an input halftone level is within a range of input halftone levels corresponding to an output halftone level that is lower than a predetermined threshold level T (N>T>1), and a dispersion type dither matrix is used as the dither matrix when the input halftone level is within a range of input halftone levels corresponding to an output halftone level that is equal to or higher than the predetermined threshold level T.
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: April 12, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Takahiro Ike, Masakazu Yoshida, Takashi Kimura, Masanori Hirano, Shigetoshi Hosaka
  • Publication number: 20100231631
    Abstract: An image forming method is disclosed in which an image is formed on commercial printing paper using a high penetration pigmented ink by performing image processing which makes use of dot patterns corresponding to an output halftone level.
    Type: Application
    Filed: February 21, 2007
    Publication date: September 16, 2010
    Applicant: Ricoh Company, Ltd.
    Inventor: Shigetoshi Hosaka
  • Publication number: 20100141707
    Abstract: An imaging apparatus is disclosed that includes plural heads that are arranged in a main scanning direction, the heads including plural nozzle arrays that are arranged in the main scanning direction and configured to discharge droplets of recording liquids in at least three different colors including a yellow recording liquid. At least two of the nozzle arrays that are configured to discharge the yellow recording liquid are separately arranged in at least two of the heads. At least two of the nozzle arrays that are configured to discharge a first recording liquid of the recording liquids in a first color other than yellow are arranged together in one of the heads. At least two of the nozzle arrays that are configured to discharge a second recording liquid of the recording liquids in a second color other than yellow are arranged together in one of the heads.
    Type: Application
    Filed: February 11, 2010
    Publication date: June 10, 2010
    Applicant: RICOH COMPANY, LTD.
    Inventors: Naoki NAKANO, Shigetoshi Hosaka, Takashi Kimura, Yoshihisa Ohta, Toshihito Kamei, Masakazu Yoshida
  • Publication number: 20100112806
    Abstract: A seed layer is formed on a surface of an insulating film and along a recess of the insulating film, and after a copper wiring is buried in the recess, a barrier film is formed, and an excessive metal is removed from the wiring. On a surface of a copper lower layer conductive path exposed at the bottom of the recess, a natural oxide of the copper is reduced or removed. On a substrate from which the natural oxide is reduced or removed, the seed layer, composed of a self-forming barrier metal having oxidative tendency higher than that of copper or an alloy of such metal and copper, is formed. The substrate is heated after burying copper in the recess. Thus, a barrier layer is formed by oxidizing the self-forming barrier metal. An excessive portion of the self-forming barrier metal is deposited on a surface of the buried copper.
    Type: Application
    Filed: November 30, 2009
    Publication date: May 6, 2010
    Applicants: TOKYO ELECTRON LIMITED, TOHOKU UNIVERSITY
    Inventors: Kenji MATSUMOTO, Shigetoshi HOSAKA, Junichi KOIKE, Koji NEISHI
  • Patent number: 7690763
    Abstract: An imaging apparatus is disclosed that includes plural heads that are arranged in a main scanning direction, the heads including plural nozzle arrays that are arranged in the main scanning direction and configured to discharge droplets of recording liquids in at least three different colors including a yellow recording liquid. At least two of the nozzle arrays that are configured to discharge the yellow recording liquid are separately arranged in at least two of the heads. At least two of the nozzle arrays that are configured to discharge a first recording liquid of the recording liquids in a first color other than yellow are arranged together in one of the heads. At least two of the nozzle arrays that are configured to discharge a second recording liquid of the recording liquids in a second color other than yellow are arranged together in one of the heads.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: April 6, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Naoki Nakano, Shigetoshi Hosaka, Takashi Kimura, Yoshihisa Ohta, Toshihito Kamei, Masakazu Yoshida
  • Patent number: 7648610
    Abstract: The present invention provides a gas process apparatus that realizes uniform exhaust without depending on process conditions, a gas process chamber that constitutes the gas process apparatus, a baffle plate mounted on the gas process chamber, a method of producing the baffle plate, and an apparatus for producing the baffle plate. The baffle plate of the present invention serves as a partition between a process space in which a chemical process is carried out with a supplied gas, and a duct that is adjacent to the process space and functions to discharge exhaust gas generated as a result of the chemical process. In accordance with the difference between the pressures on both sides of the baffle plate, which difference varies depending on the location on the baffle plate, the baffle holes are disposed on a plurality of locations on the baffle plate.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: January 19, 2010
    Assignee: Tokyo Electron Limited
    Inventors: Taro Komiya, Hatsuo Osada, Shigetoshi Hosaka, Tomihiro Yonenaga, Masayuki Tomoyasu
  • Patent number: 7533961
    Abstract: An imaging method is disclosed that is implemented in an image forming apparatus for forming a tone pattern on a recording medium by forming an arrangement of dots on the recording medium. The arrangement of dots is formed on the recording medium by jetting a recording liquid from a recording head while moving the recording head in a main scanning direction a plurality of times and intermittently conveying the recording medium in a sub-scanning direction that perpendicularly intersects the main scanning direction. The imaging method involves forming the arrangement of dots such that dots belonging to a first group that are consecutively aligned in a base tone direction and dots belonging to a second group that are consecutively aligned in the sub scanning direction are respectively formed in non-consecutive order on the recording medium.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: May 19, 2009
    Assignee: Ricoh Company, Ltd.
    Inventors: Naoki Kikuchi, Takashi Kimura, Shigetoshi Hosaka
  • Publication number: 20090080002
    Abstract: A disclosed inkjet recording apparatus for performing recording by jetting a recording liquid onto a recording medium includes an image processing unit configured to obtain an output halftone level by performing halftone processing on input image data, to select a dot arrangement order according to the obtained output halftone level, and thereby to generate dot data where dots are arranged in a grid-like pattern. The disclosed inkjet recording apparatus is configured to use a pigmented ink as the recording liquid when the recording medium is a commercial printing paper, and to record the dots in a staggered arrangement where positions of the dots in odd/even-numbered columns or odd/even-numbered rows in the dot data are shifted in a sub-scanning direction or in a main-scanning direction.
    Type: Application
    Filed: April 3, 2007
    Publication date: March 26, 2009
    Applicant: RICOH COMPANY, LTD.
    Inventors: Naoki Nakano, Masakazu Yoshida, Takashi Kimura, Masanori Hirano, Takahiro Ike, Shigetoshi Hosaka
  • Patent number: 7407248
    Abstract: An image processing method performs processing to generate image data based on input data and output the image data to an image forming device. The image forming device includes a printing head in which first nozzles for ejecting color ink drops are arranged in a symmetrical formation to forward and backward scanning directions and second nozzles for ejecting black or gray ink drops are arranged in an unsymmetrical formation with respect to the first nozzles. The image forming device is adapted to perform a uni-directional printing or a bidirectional printing with the printing head. In the image processing method, a black generation processing to the input data is performed, and when performing the black generation processing, a black-generation start level for the bidirectional printing is delayed to a shadow-side gradation level from a black-generation start level for the uni-directional printing.
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: August 5, 2008
    Assignee: Ricoh Company, Ltd.
    Inventors: Masanori Hirano, Masakazu Yoshida, Shigetoshi Hosaka
  • Publication number: 20080137147
    Abstract: A disclosed image forming apparatus is capable of forming an image using a black recording liquid and at least one color recording liquid and generating image data on an image to be output. When an input image is black, the image data is generated for forming the image with the black recording liquid and using the color recording liquid for the image.
    Type: Application
    Filed: December 3, 2007
    Publication date: June 12, 2008
    Inventors: Naoki NAKANO, Yoshiaki Hoshino, Masanori Hirano, Takashi Kimura, Masakazu Yoshida, Taku Satoh, Shigetoshi Hosaka, Shigetaka Sakakibara
  • Publication number: 20080123146
    Abstract: A disclosed dither matrix is used in halftone processing for converting input image data having M input halftone levels into output image data having N (M>N>2) output halftone levels. In the halftone processing, a concentration type dither matrix is used as the dither matrix when an input halftone level is within a range of input halftone levels corresponding to an output halftone level that is lower than a predetermined threshold level T (N>T>1), and a dispersion type dither matrix is used as the dither matrix when the input halftone level is within a range of input halftone levels corresponding to an output halftone level that is equal to or higher than the predetermined threshold level T.
    Type: Application
    Filed: November 1, 2006
    Publication date: May 29, 2008
    Applicant: RICOH COMPANY, LTD.
    Inventors: Takahiro Ike, Masakazu Yoshida, Takashi Kimura, Masanori Hirano, Shigetoshi Hosaka
  • Publication number: 20080117467
    Abstract: An image processing method configured to produce image data output from an image forming apparatus configured to form an image by using a recording head composed of a liquid ejecting head having plural arranged nozzles configured to eject a liquid drop and an energy generating device configured to generate ejection energy corresponding to each nozzle while conducting a halftone processing configured to covert input image data to an N value which is less than a tone (M value) thereof (N value: M>N?2) is provided, wherein a halftone processing configured to substantially reduce a driving frequency of a driving wave pattern applied to the energy generating device is conducted when a liquid drop with a drop size causing ejection irregularity or a liquid drop from a nozzle causing ejection irregularity is ejected.
    Type: Application
    Filed: November 15, 2007
    Publication date: May 22, 2008
    Applicant: Ricoh Company, Ltd.
    Inventors: Shigetoshi Hosaka, Masakazu Yoshida, Taku Satoh, Takashi Kimura
  • Publication number: 20080068412
    Abstract: An imaging method is disclosed that is implemented in an image forming apparatus for forming a tone pattern on a recording medium by forming an arrangement of dots on the recording medium. The arrangement of dots is formed on the recording medium by jetting a recording liquid from a recording head while moving the recording head in a main scanning direction a plurality of times and intermittently conveying the recording medium in a sub-scanning direction that perpendicularly intersects the main scanning direction. The imaging method involves forming the arrangement of dots such that dots belonging to a first group that are consecutively aligned in a base tone direction and dots belonging to a second group that are consecutively aligned in the sub scanning direction are respectively formed in non-consecutive order on the recording medium.
    Type: Application
    Filed: September 18, 2007
    Publication date: March 20, 2008
    Inventors: Naoki Kikuchi, Takashi Kimura, Shigetoshi Hosaka
  • Publication number: 20080018703
    Abstract: An imaging apparatus is disclosed that includes plural heads that are arranged in a main scanning direction, the heads including plural nozzle arrays that are arranged in the main scanning direction and configured to discharge droplets of recording liquids in at least three different colors including a yellow recording liquid. At least two of the nozzle arrays that are configured to discharge the yellow recording liquid are separately arranged in at least two of the heads. At least two of the nozzle arrays that are configured to discharge a first recording liquid of the recording liquids in a first color other than yellow are arranged together in one of the heads. At least two of the nozzle arrays that are configured to discharge a second recording liquid of the recording liquids in a second color other than yellow are arranged together in one of the heads.
    Type: Application
    Filed: April 21, 2006
    Publication date: January 24, 2008
    Inventors: Naoki Nakano, Shigetoshi Hosaka, Takashi Kimura, Yoshihisa Ohta, Toshihito Kamei, Masakazu Yoshida