Patents by Inventor Hisayoshi Ohshima

Hisayoshi Ohshima 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: 20230256742
    Abstract: A liquid droplet-forming device is provided, including: a liquid chamber; a discharge hole configured to discharge a raw material liquid in the liquid chamber in a form of liquid droplets; sealed space-forming means; and at least two flow paths, in which the sealed space-forming means is capable of forming a sealed space communicating with the liquid chamber through the discharge hole on a side opposite to the liquid chamber of the discharge hole, and the at least two flow paths communicate with each other through the sealed space.
    Type: Application
    Filed: April 28, 2023
    Publication date: August 17, 2023
    Inventors: Hisayoshi OHSHIMA, Yuichi SATO, Shinji AOKI, Satoshi SHINOHARA, Shuusuke IWATA
  • Patent number: 11448979
    Abstract: A discharge device is provided. The discharge device includes a liquid feed-discharger, and the liquid feed-discharger includes a feed unit configured to feed a liquid and a discharge unit having discharge holes configured to discharge the liquid fed by the feed unit. A ratio (X/Y) of a maximum cross-sectional area X (mm2) to a minimum cross-sectional area Y (mm2) of the liquid feed-discharger in a direction orthogonal to an axial direction of the liquid feed-discharger is from 1 to 5.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: September 20, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tadahiko Morinaga, Tatsuru Moritani, Naoki Shiraishi, Shinji Aoki, Hisayoshi Ohshima, Yuichi Sato
  • Publication number: 20190302633
    Abstract: A discharge device is provided. The discharge device includes a liquid feed-discharger, and the liquid feed-discharger includes a feed unit configured to feed a liquid and a discharge unit having discharge holes configured to discharge the liquid fed by the feed unit. A ratio (X/Y) of a maximum cross-sectional area X (mm2) to a minimum cross-sectional area Y (mm2) of the liquid feed-discharger in a direction orthogonal to an axial direction of the liquid feed-discharger is from 1 to 5.
    Type: Application
    Filed: March 22, 2019
    Publication date: October 3, 2019
    Inventors: Tadahiko MORINAGA, Tatsuru MORITANI, Naoki SHIRAISHI, Shinji AOKI, Hisayoshi OHSHIMA, Yuichi SATO
  • Patent number: 9132593
    Abstract: A disclosed method for producing a hollow cell array structure includes a first step of layering a deformable material capable of being plastically deformed under a predetermined condition on a first substrate, the first substrate having plural, mutually separated depressions in a surface thereof, such that the deformable material forms mutually isolated spaces in the corresponding depressions; a second step of expanding the spaces in the plural depressions by inducing a gas pressure of the spaces while extending the deformable material on the first substrate, such that plural hollow cells are simultaneously formed in correspondence to the plural depressions in predetermined directions; and a third step of selectively solidifying portions of the plural hollow cells by selectively applying ultraviolet rays thereto.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: September 15, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshihiro Kanematsu, Masaru Ohgaki, Shinji Aoki, Shinya Seno, Masahiro Masuzawa, Hisayoshi Ohshima, Yukie Inoue
  • Patent number: 9102138
    Abstract: Using an intermediate transfer body onto which a conductive recording liquid containing water that is ejected by heads is provided; and a potential applying unit which applies a potential which can electrolyze the water within the conductive recording liquid which is ejected from the heads and which temporarily bridges between the heads and the intermediate transfer body, the potential applying unit applies a potential between the intermediate transfer body and electrodes which are in contact with the recording liquid in supplying units which supply the recording liquid to the heads.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: August 11, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Ryota Suzuki, Takeo Tsukamoto, Hisayoshi Ohshima, Aino Hasegawa, Hideomi Sakuma, Manabu Seo, Hiroyuki Yamashita, Yuuma Usui, Takahiko Matsumoto, Takeshi Hihara
  • Patent number: 9010915
    Abstract: Disclosed is an aqueous ink composition, including an aqueous solvent, a coloring agent dissolved or dispersed in the aqueous solvent, an ABA-type amphipathic polymer including a hydrophobic segment A and a hydrophilic segment B, and an anionic surfactant configured to dissolve or disperse the ABA-type amphipathic polymer in the aqueous solvent, wherein a viscosity of the aqueous ink composition is changed depending on a pH thereof.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: April 21, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuuma Usui, Takeo Tsukamoto, Aino Hasegawa, Hideomi Sakuma, Manabu Seo, Hiroyuki Yamashita, Ryota Suzuki, Hisayoshi Ohshima, Takahiko Matsumoto, Shigeo Takeuchi, Takeshi Hihara
  • Patent number: 8944556
    Abstract: Disclosed is an image forming apparatus including a head configured to discharge an aqueous recording liquid onto a recording medium; and a coating unit configured to apply a process liquid onto the recording medium, wherein the process liquid is formed by emulsifying, by a first surfactant, water including a water-soluble polymer and a low polarity solvent which is not compatible with the water, wherein the water and the low polarity solvent are emulsified as a W/O emulsion in which the water is in a dispersed phase and the low polarity solvent is in a continuous phase.
    Type: Grant
    Filed: August 19, 2013
    Date of Patent: February 3, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Takeshi Hihara, Yuuma Usui, Takeo Tsukamoto, Manabu Seo, Takahiko Matsumoto, Hiroyuki Yamashita, Hideomi Sakuma, Aino Hasegawa, Ryota Suzuki, Hisayoshi Ohshima, Shigeo Takeuchi, Mizuki Otagiri
  • Patent number: 8870350
    Abstract: An image forming device includes a head including a nozzle that discharges an electrically-conductive recording liquid in accordance with a driving signal; an intermediate transfer body on which the recording liquid discharged by the head is applied; a voltage apply unit that applies a voltage between the intermediate transfer body and the head, so as to decompose the electrically-conductive recording liquid by electrolysis; a transfer unit that transfers an image supported on the intermediate transfer body onto a recording material; and a discharging control unit that generates the driving signal that causes the electrically-conductive recording liquid to be discharged from the nozzle. The discharging control unit generates the driving signal so that a position of a meniscus is placed outside the nozzle during a time interval in which the recording liquid temporarily bridges between the head and the intermediate transfer body.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: October 28, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Ryota Suzuki, Takeo Tsukamoto, Takeshi Orito, Manabu Seo, Hideomi Sakuma, Aino Hasegawa, Hiroyuki Yamashita, Yuuma Usui, Hisayoshi Ohshima, Takahiko Matsumoto
  • Publication number: 20140240422
    Abstract: Using an intermediate transfer body onto which a conductive recording liquid containing water that is ejected by heads is provided; and a potential applying unit which applies a potential which can electrolyze the water within the conductive recording liquid which is ejected from the heads and which temporarily bridges between the heads and the intermediate transfer body, the potential applying unit applies a potential between the intermediate transfer body and electrodes which are in contact with the recording liquid in supplying units which supply the recording liquid to the heads.
    Type: Application
    Filed: November 1, 2012
    Publication date: August 28, 2014
    Inventors: Ryota Suzuki, Takeo Tsukamoto, Hisayoshi Ohshima, Aino Hasegawa, Hideomi Sakuma, Manabu Seo, Hiroyuki Yamashita, Yuuma Usui, Takahiko Matsumoto, Takeshi Hihara
  • Publication number: 20140071196
    Abstract: Disclosed is an image forming apparatus including a head configured to discharge an aqueous recording liquid onto a recording medium; and a coating unit configured to apply a process liquid onto the recording medium, wherein the process liquid is formed by emulsifying, by a first surfactant, water including a water-soluble polymer and a low polarity solvent which is not compatible with the water, wherein the water and the low polarity solvent are emulsified as a W/O emulsion in which the water is in a dispersed phase and the low polarity solvent is in a continuous phase.
    Type: Application
    Filed: August 19, 2013
    Publication date: March 13, 2014
    Applicant: RICHO COMPANY, LTD.
    Inventors: Takeshi Hihara, Yuuma Usui, Takeo Tsukamoto, Manabu Seo, Takahiko Matsumoto, Hiroyuki Yamashita, Hideomi Sakuma, Aino Hasegawa, Ryota Suzuki, Hisayoshi Ohshima, Shigeo Takeuchi, Mizuki Otagiri
  • Publication number: 20130093810
    Abstract: An image forming device includes a head including a nozzle that discharges an electrically-conductive recording liquid in accordance with a driving signal; an intermediate transfer body on which the recording liquid discharged by the head is applied; a voltage apply unit that applies a voltage between the intermediate transfer body and the head, so as to decompose the electrically-conductive recording liquid by electrolysis; a transfer unit that transfers an image supported on the intermediate transfer body onto a recording material; and a discharging control unit that generates the driving signal that causes the electrically-conductive recording liquid to be discharged from the nozzle. The discharging control unit generates the driving signal so that a position of a meniscus is placed outside the nozzle during a time interval in which the recording liquid temporarily bridges between the head and the intermediate transfer body.
    Type: Application
    Filed: April 12, 2012
    Publication date: April 18, 2013
    Inventors: Ryota Suzuki, Takeo Tsukamoto, Takeshi Orito, Manabu Seo, Hideomi Sakuma, Aino Hasegawa, Hiroyuki Yamashita, Yuuma Usui, Hisayoshi Ohshima, Takahiko Matsumoto
  • Publication number: 20130050363
    Abstract: Disclosed is an aqueous ink composition, including an aqueous solvent, a coloring agent dissolved or dispersed in the aqueous solvent, an ABA-type amphipathic polymer including a hydrophobic segment A and a hydrophilic segment B, and an anionic surfactant configured to dissolve or disperse the ABA-type amphipathic polymer in the aqueous solvent, wherein a viscosity of the aqueous ink composition is changed depending on a pH thereof.
    Type: Application
    Filed: August 17, 2012
    Publication date: February 28, 2013
    Inventors: Yuuma Usui, Takeo Tsukamoto, Aino Hasegawa, Hideomi Sakuma, Manabu Seo, Hiroyuki Yamashita, Ryota Suzuki, Hisayoshi Ohshima, Takahiko Matsumoto, Shigeo Takeuchi, Takeshi Hihara
  • Patent number: 8273275
    Abstract: A disclosed method of manufacturing an image display element structure includes a coating step of coating a substrate surface including a plurality of recessed portions arranged at predetermined intervals, with a coating material that is plastic-deformable, in such a manner as to maintain spaces in the recessed portions; and an expanding step of forming gaps in the coating material coating the substrate surface by expanding gas in the spaces, wherein the gaps correspond to the recessed portions; and a peeling step of peeling off the coating material in which the gaps have been formed, from the substrate surface.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: September 25, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Hisayoshi Ohshima, Masaru Ohgaki, Toshihiro Kanematsu, Masahiro Masuzawa, Shinya Seno, Shinji Aoki
  • Patent number: 8241731
    Abstract: A display panel includes a sheet having first and second spaced apart surfaces defining a space therebetween and a plurality of partitions extending from the first surface to the second surface and dividing the space into a plurality of cells, wherein the thickness of each partition is in a range of 0.01 to 10 ?m.
    Type: Grant
    Filed: March 6, 2008
    Date of Patent: August 14, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Masaru Ohgaki, Masahiro Masuzawa, Toshihiro Kanematsu, Shinji Aoki, Shinya Seno, Hisayoshi Ohshima
  • Publication number: 20120114876
    Abstract: A disclosed method for producing a hollow cell array structure includes a first step of layering a deformable material capable of being plastically deformed under a predetermined condition on a first substrate, the first substrate having plural, mutually separated depressions in a surface thereof, such that the deformable material forms mutually isolated spaces in the corresponding depressions; a second step of expanding the spaces in the plural depressions by inducing a gas pressure of the spaces while extending the deformable material on the first substrate, such that plural hollow cells are simultaneously formed in correspondence to the plural depressions in predetermined directions; and a third step of selectively solidifying portions of the plural hollow cells by selectively applying ultraviolet rays thereto.
    Type: Application
    Filed: July 8, 2010
    Publication date: May 10, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Toshihiro Kanematsu, Masaru Ohgaki, Shinji Aoki, Shinya Seno, Masahiro Masuzawa, Hisayoshi Ohshima, Yukie Inoue
  • Patent number: 8090305
    Abstract: Disclosed is a fixing device including a liquid supply unit that supplies a liquid fixer containing a softening agent that dissolves or swells at least part of resin to soften the resin; an air supply unit that supplies air for foaming the liquid fixer; and a foam generation unit that mixes the liquid fixer from the liquid supply unit with the air from the air supply unit to generate foams. The foam generation unit has an air channel where the air from the air supply unit flows, a liquid-fixer channel provided such that the liquid fixer from the liquid supply unit flows from a direction opposite to a flowing direction of the air channel, and an air-and-liquid mixing part that mixes the air from the air channel with the liquid fixer from the liquid fixer channel so as to be opposite to each other, thereby generating a foam-like fixer.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: January 3, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshiyuki Iseki, Hisayoshi Ohshima, Takahiko Matsumoto, Yukimichi Someya
  • Patent number: 7936498
    Abstract: A display element includes a hollow structure. The hollow structure includes plural cells disposed in a plane, each having an opening in a first wall of the hollow structure, and a partition wall separating the adjacent cells. A solvent having one or more types of white particles and/or colored particles dispersed therein is disposed in the cells. The openings are sealed with a resin insoluble in the solvent. A thickness of the partition wall separating the adjacent cells is 0.01 ?m or greater but not greater than 10 ?m.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: May 3, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshihiro Kanematsu, Masaru Ohgaki, Shinji Aoki, Hisayoshi Ohshima, Shinya Seno, Masahiro Masuzawa
  • Patent number: 7918963
    Abstract: An apparatus maintaining adjusted positions of parts assembled by adhering includes a device coating plural sections between a part and an adhering target with light energy curable adhesives adhering the part to the adhering target, a light energy irradiating device for curing the adhesive, and a detecting device detecting a displacement of the part from the adhering target. A curing shrinkage force control device is also provided to control the light energy irradiating device to change the light and thus control curing shrinkage forces to offset undesirable stresses generated by the curing shrinkage forces when undesirable displacement is detected.
    Type: Grant
    Filed: September 19, 2003
    Date of Patent: April 5, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Taroh Terashi, Hisayoshi Ohshima, Yuusuke Taneda
  • Publication number: 20100284716
    Abstract: Disclosed is a fixing device including a liquid supply unit that supplies a liquid fixer containing a softening agent that dissolves or swells at least part of resin to soften the resin; an air supply unit that supplies air for foaming the liquid fixer; and a foam generation unit that mixes the liquid fixer from the liquid supply unit with the air from the air supply unit to generate foams. The foam generation unit has an air channel where the air from the air supply unit flows, a liquid-fixer channel provided such that the liquid fixer from the liquid supply unit flows from a direction opposite to a flowing direction of the air channel, and an air-and-liquid mixing part that mixes the air from the air channel with the liquid fixer from the liquid fixer channel so as to be opposite to each other, thereby generating a foam-like fixer.
    Type: Application
    Filed: April 29, 2010
    Publication date: November 11, 2010
    Inventors: Toshiyuki ISEKI, Hisayoshi Ohshima, Takahiko Matsumoto, Yukimichi Someya
  • Publication number: 20100188731
    Abstract: A display element includes a hollow structure. The hollow structure includes plural cells disposed in a plane, each having an opening in a first wall of the hollow structure, and a partition wall separating the adjacent cells. A solvent having one or more types of white particles and/or colored particles dispersed therein is disposed in the cells. The openings are sealed with a resin insoluble in the solvent. A thickness of the partition wall separating the adjacent cells is 0.01 ?m or greater but not greater than 10 ?m.
    Type: Application
    Filed: March 5, 2008
    Publication date: July 29, 2010
    Inventors: Toshihiro Kanematsu, Masaru Ohgaki, Shinji Aoki, Hisayoshi Ohshima, Shinya Seno, Masahiro Masuzawa