Patents by Inventor Hideomi Sakuma

Hideomi Sakuma 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: 20240040247
    Abstract: A method for capturing a subject, using an image capturing device mounted on a mobile apparatus. The image capturing device divides a target area of the subject into a plurality of image capturing areas in a moving direction of the mobile apparatus, and captures the plurality of image capturing areas, while moving with the mobile apparatus. The method includes: setting, as a focusing condition for the image capturing device, a focus distance that is commonly used to capture the plurality of image capturing areas in the target area, such that the plurality of image capturing areas are within depth of field; and capturing, with the image capturing device, the plurality of image capturing areas at the focus distance that is set as the focusing condition.
    Type: Application
    Filed: July 24, 2023
    Publication date: February 1, 2024
    Applicant: Ricoh Company, Ltd.
    Inventors: Hibiki Tatsuno, Yasuhiro Akita, Hideomi Sakuma, Kohei Ushio
  • Patent number: 10717523
    Abstract: An aircraft includes propellers at a center of the airframe; a first power source; a pitch adjuster to change pitch angles of the propellers; a plurality of attitude control propellers; a second power source lower in output than the first power source; and a control circuit to control attitude of the airframe. The control circuit includes a first yaw rotation generation control unit to control first yaw rotation generated by torques of the propellers with the pitch adjuster; and a second yaw rotation generation control unit to control a second yaw rotation generated by torques generated by a difference in rotation speed between the attitude control propellers. The control circuit is configured to control the first yaw rotation generation control unit and the second yaw rotation generation control unit in accordance with a magnitude of a command value of yaw rotation.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: July 21, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventor: Hideomi Sakuma
  • Publication number: 20180265191
    Abstract: An aircraft includes propellers at a center of the airframe; a first power source; a pitch adjuster to change pitch angles of the propellers; a plurality of attitude control propellers; a second power source lower in output than the first power source; and a control circuit to control attitude of the airframe. The control circuit includes a first yaw rotation generation control unit to control first yaw rotation generated by torques of the propellers with the pitch adjuster; and a second yaw rotation generation control unit to control a second yaw rotation generated by torques generated by a difference in rotation speed between the attitude control propellers. The control circuit is configured to control the first yaw rotation generation control unit and the second yaw rotation generation control unit in accordance with a magnitude of a command value of yaw rotation.
    Type: Application
    Filed: March 15, 2018
    Publication date: September 20, 2018
    Inventor: Hideomi SAKUMA
  • 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: 8919946
    Abstract: An image forming apparatus with a voltage applying unit between a recording head and an intermediate transfer drum is capable of activating polyvalent metal ions inactivated in advance in jetted recording liquid without liquid activators independent of the recording liquid for sufficient flocculation on the drum. When the jetted recording liquid temporarily bridges the head and the drum, electrolysis of the recording liquid by the voltage applied instantly leads to generation of hydrogen ions on the drum, which triggers a sequence of reactions in the recording liquid of activation of polyvalent metal ions, cross-link between the activated polyvalent metal ions and anionic polymer, and increase in viscosity on the drum.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: December 30, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Ryota Suzuki, Yuuma Usui, Takeo Tsukamoto, Hideomi Sakuma, Aino Hasegawa, Manabu Seo, Takeshi Orito
  • 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: 20130057628
    Abstract: An image forming apparatus with a voltage applying unit between a recording head and an intermediate transfer drum is capable of activating polyvalent metal ions inactivated in advance in jetted recording liquid without liquid activators independent of the recording liquid for sufficient flocculation on the drum. When the jetted recording liquid temporarily bridges the head and the drum, electrolysis of the recording liquid by the voltage applied instantly leads to generation of hydrogen ions on the drum, which triggers a sequence of reactions in the recording liquid of activation of polyvalent metal ions, cross-link between the activated polyvalent metal ions and anionic polymer, and increase in viscosity on the drum.
    Type: Application
    Filed: May 2, 2011
    Publication date: March 7, 2013
    Inventors: Ryota Suzuki, Yuuma Usui, Takeo Tsukamoto, Hideomi Sakuma, Aino Hasegawa, Manabu Seo, Takeshi Orito
  • 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: 7682016
    Abstract: An image-forming apparatus includes an endless conveyor belt, a counter roller, and a clutch part. The endless conveyor belt is rotatable to convey paper with a surface of the conveyor belt being charged. The counter roller holds the paper between the conveyor belt and the counter roller and conveys the paper. The clutch part is caused to slip by the difference in velocity between the conveyor belt and the counter roller. The counter roller is driven through the clutch part.
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: March 23, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Hideomi Sakuma, Shinji Imoto, Yohichi Itoh, Hiroshi Yasuda, Akira Ishii
  • Patent number: 7434927
    Abstract: An inkjet recording device is disclosed that is capable of precisely defining the gap between a conveyance belt and a recording head and maintaining good flatness of the conveyance belt and a recording medium being conveyed. A guide unit is arranged to push a portion of the conveyance belt from the inner side to approach the recording unit. The guide unit has a number of projecting ribs formed on the surface of the guide unit in contact with the conveyance belt and arranged to be perpendicular to the rolling direction of the conveyance belt.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: October 14, 2008
    Assignee: Ricoh Company, Ltd.
    Inventors: Hideomi Sakuma, Shinji Imoto, Yohichi Itoh, Hiroshi Yasuda, Akira Ishii
  • Publication number: 20060164491
    Abstract: An image-forming apparatus includes an endless conveyor belt, a counter roller, and a clutch part. The endless conveyor belt is rotatable to convey paper with a surface of the conveyor belt being charged. The counter roller holds the paper between the conveyor belt and the counter roller and conveys the paper. The clutch part is caused to slip by the difference in velocity between the conveyor belt and the counter roller. The counter roller is driven through the clutch part.
    Type: Application
    Filed: November 14, 2003
    Publication date: July 27, 2006
    Inventors: Hideomi Sakuma, Shinji Imoto, Yohichi Itoh, Hiroshi Yasuda, Akira Ishii
  • Publication number: 20060055754
    Abstract: An inkjet recording device is disclosed that is capable of precisely defining the gap between a conveyance belt and a recording head and maintaining good flatness of the conveyance belt and a recording medium being conveyed. A guide unit is arranged to push a portion of the conveyance belt from the inner side to approach the recording unit. The guide unit has a number of projecting ribs formed on the surface of the guide unit in contact with the conveyance belt and arranged to be perpendicular to the rolling direction of the conveyance belt.
    Type: Application
    Filed: November 25, 2003
    Publication date: March 16, 2006
    Inventors: Hideomi Sakuma, Shinji Imoto, Yohichi Itoh, Hiroshi Yasuda, Akira Ishii