Patents by Inventor Kazuhiro Akatsu
Kazuhiro Akatsu 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).
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Publication number: 20230219162Abstract: A pattern forming apparatus for a base material includes a holding unit and a pattern forming unit. The holding unit is configured to hold a base material on which one of a protrusion shape portion and a recess shape portion is formed. The pattern forming unit is configured to form a pattern on the base material. The pattern is formed on at least one of the protrusion shape portion, the recess shape portion, a periphery of the recess shape portion, a periphery of the protrusion shape portion, a portion along the protrusion shape portion, and a portion along the recess shape portion.Type: ApplicationFiled: March 1, 2023Publication date: July 13, 2023Inventors: Kazuhiro AKATSU, Rie HIRAYAMA, Kazuhiro FUJITA, Shoichiro SAKAI
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Publication number: 20220388724Abstract: Provided is a container including a container body, and an image on the container body. The image includes a plurality of dented portions and non-dented portions. Each of the dented portions is formed of a plurality of processed portions. The plurality of processed portions are disposed linearly, contacting or overlapping each other along a first scanning direction. A width of each of the dented portions in a second scanning direction orthogonal to the first scanning direction changes cyclically along the first scanning direction. Each of the dented portions has bossed portions along the first scanning direction between adjoining ones of the processed portions.Type: ApplicationFiled: May 20, 2022Publication date: December 8, 2022Applicant: Ricoh Company, Ltd.Inventors: Keiichi SERIZAWA, Kazuhiro FUJITA, Masako YOSHII, Makoto HINO, Kazuhiro AKATSU
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Publication number: 20220388324Abstract: Provided is a container including a container body and an image on the container body. The image includes a plurality of dented portions and non-dented portions. A visibility value of the image represented by Mathematical formula (1) below is greater than or equal to a predetermined value. Visibility value=b0·L*0·(1?exp(b1·?L*))??Mathematical formula (1) In Mathematical formula (1), L*0 represents a luminosity of the image. ?L* represents a difference between the luminosity of the image and a luminosity of any other portion than the image, b0 represents a positive real number, and b1 represents a negative real number.Type: ApplicationFiled: May 16, 2022Publication date: December 8, 2022Inventors: Masako YOSHII, Keiichi SERIZAWA, Makoto HINO, Kazuhiro AKATSU, Takeshi UEDA, Takayuki NAKAMURA, Yumiko KISHI
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Publication number: 20220305812Abstract: A medium, a container, an object-holding container, a marking, device, and a method of manufacturing the container. The medium includes an image of design, and the design includes a light color portion and a dark color portion, the light color portion including a light reflecting layer, and the dark color portion including a light attenuation layer The container includes a laser beam source to emit a laser beam, a forming unit to make the laser beam perform marking on a container that has transparency and is colorless or colored, and an adjuster to adjust a marking condition according to information about a to-lie-contained object stored in the container. The method includes irradiating the container with a laser beam to form a light reflecting layer and a light attenuation layer, and the light reflecting layer and the light attenuation layer includes an aggregate of microstructures.Type: ApplicationFiled: March 11, 2022Publication date: September 29, 2022Inventors: Kazuki FUNAHASHI, Yoichi ICHIKAWA, Yumiko KISHI, Hirotoshi NAKAYAMA, Makoto HINO, Kazuhiro AKATSU
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Patent number: 10591602Abstract: An object detector includes a projector including a light source having a two-dimensionally arranged plurality of light emitter groups, each of the light emitter groups having a plurality of light emitters, a light receiver which receives light emitted from the projector, and reflected by an object, and a light source driver which lights on and lights off each of the light emitter groups of the light source.Type: GrantFiled: April 15, 2019Date of Patent: March 17, 2020Assignee: Ricoh Company, Ltd.Inventors: Kazuhiro Akatsu, Tadashi Nakamura, Kohji Sakai
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Publication number: 20190242997Abstract: An object detector includes a projector including a light source having a two-dimensionally arranged plurality of light emitter groups, each of the light emitter groups having a plurality of light emitters, a light receiver which receives light emitted from the projector, and reflected by an object, and a light source driver which lights on and lights off each of the light emitter groups of the light source.Type: ApplicationFiled: April 15, 2019Publication date: August 8, 2019Inventors: Kazuhiro AKATSU, Tadashi NAKAMURA, Kohji SAKAI
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Patent number: 10302767Abstract: An object detector includes a projector including a light source having a two-dimensionally arranged plurality of light emitter groups, each of the light emitter groups having a plurality of light emitters, a light receiver which receives light emitted from the projector, and reflected by an object, and a light source driver which lights on and lights off each of the light emitter groups of the light source.Type: GrantFiled: October 10, 2017Date of Patent: May 28, 2019Assignee: RICOH COMPANY, LTD.Inventors: Kazuhiro Akatsu, Tadashi Nakamura, Kohji Sakai
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Patent number: 10209133Abstract: A wavelength estimation device including a light detector to receive light emitted from a light source and an estimation unit. The estimation unit estimates a wavelength of the light based on an amount of light received by the light detector.Type: GrantFiled: March 9, 2017Date of Patent: February 19, 2019Assignee: Ricoh Company, Ltd.Inventors: Kohji Sakai, Kazuhiro Akatsu
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Patent number: 9889679Abstract: An application device includes a conveyer to convey a recording medium, an application roller to apply a treatment liquid to the recording medium, a pressure roller to sandwich the recording medium with the application roller to press the recording medium against the application roller, and a winding member to form a curved conveying path to have the recording medium curved along a conveying direction to wind the recording medium around the pressure roller. The pressure roller comes in contact with the application roller when applying the treatment liquid and separates from the application roller when not applying the treatment liquid. A predetermined positional relationship is maintained between the pressure roller and the winding member while the pressure roller moves close to the application roller to be in contact with the application roller, or the pressure roller moves away from the application roller to be separated from the application roller.Type: GrantFiled: December 2, 2016Date of Patent: February 13, 2018Assignee: RICOH COMPANY, LTD.Inventors: Akitomo Kuwabara, Kazuhiro Akatsu, Yutaka Nagasawa, Yuuji Ohmura, Hirotaka Kobayashi, Hirofumi Ohkushi
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Publication number: 20180038959Abstract: An object detector includes a projector including a light source having a two-dimensionally arranged plurality of light emitter groups, each of the light emitter groups having a plurality of light emitters, a light receiver which receives light emitted from the projector, and reflected by an object, and a light source driver which lights on and lights off each of the light emitter groups of the light source.Type: ApplicationFiled: October 10, 2017Publication date: February 8, 2018Inventors: Kazuhiro AKATSU, Tadashi NAKAMURA, Kohji SAKAI
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Patent number: 9817123Abstract: An object detector includes a projector including a light source having a two-dimensionally arranged plurality of light emitter groups, ach of the light emitter groups having a plurality of light emitters, a light receiver which receives light emitted from the projector, and reflected by an object, and a light source driver which lights on and lights off each of the light emitter groups of the light source.Type: GrantFiled: December 7, 2016Date of Patent: November 14, 2017Assignee: RICOH COMPANY, LTD.Inventors: Kazuhiro Akatsu, Tadashi Nakamura, Kohji Sakai
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Publication number: 20170276546Abstract: A wavelength estimation device including a light detector to receive light emitted from a light source and an estimation unit. The estimation unit estimates a wavelength of the light based on an amount of light received by the light detector.Type: ApplicationFiled: March 9, 2017Publication date: September 28, 2017Inventors: Kohji SAKAI, Kazuhiro Akatsu
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Publication number: 20170165981Abstract: An application device includes a conveyer to convey a recording medium, an application roller to apply a treatment liquid to the recording medium, a pressure roller to sandwich the recording medium with the application roller to press the recording medium against the application roller, and a winding member to form a curved conveying path to have the recording medium curved along a conveying direction to wind the recording medium around the pressure roller. The pressure roller comes in contact with the application roller when applying the treatment liquid and separates from the application roller when not applying the treatment liquid. A predetermined positional relationship is maintained between the pressure roller and the winding member while the pressure roller moves close to the application roller to be in contact with the application roller, or the pressure roller moves away from the application roller to be separated from the application roller.Type: ApplicationFiled: December 2, 2016Publication date: June 15, 2017Applicant: RICHO COMPANY, LTD.Inventors: Akitomo Kuwabara, Kazuhiro Akatsu, Yutaka Nagasawa, Yuuji Ohmura, Hirotaka Kobayashi, Hirofumi Ohkushi
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Patent number: 9616682Abstract: There is provided a process liquid coating apparatus comprising: a recording medium conveyance unit configured to convey a recording medium; a coating roller configured to rotate in accordance with the conveyed recording medium to apply process liquid on a surface of the recording medium; a pressure roller configured to cause the coating roller to apply the process liquid on the surface of the recording medium by forming an abutment part for nipping and pressing the recording medium with the coating roller; and a winding member configured to form a bent conveyance path along which the recording medium is bent with respect to a conveyance direction so that the recording medium is wound around the surface of the pressure roller, wherein the winding member is disposed adjacent to the pressure roller.Type: GrantFiled: February 9, 2016Date of Patent: April 11, 2017Assignee: Ricoh Company, Ltd.Inventors: Kazuhiro Akatsu, Yutaka Nagasawa, Akitomo Kuwabara, Yuuji Ohmura, Hirofumi Ohkushi, Hirotaka Kobayashi, Sho Sawahata
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Publication number: 20170082747Abstract: An object detector includes a projector including a light source having a two-dimensionally arranged plurality of light emitter groups, ach of the light emitter groups having a plurality of light emitters, a light receiver which receives light emitted from the projector, and reflected by an object, and a light source driver which lights on and lights off each of the light emitter groups of the light source.Type: ApplicationFiled: December 7, 2016Publication date: March 23, 2017Inventors: KAZUHIRO AKATSU, Tadashi Nakamura, Kohji Sakai
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Patent number: 9568605Abstract: An object detector includes a projector including a light source having a two-dimensionally arranged plurality of light emitter groups, each of the light emitter groups having a plurality of light emitters, a light receiver which receives light emitted from the projector, and reflected by an object, and a light source driver which lights on and lights off each of the light emitter groups of the light source.Type: GrantFiled: November 26, 2014Date of Patent: February 14, 2017Assignee: RICOH COMPANY, LTD.Inventors: Kazuhiro Akatsu, Tadashi Nakamura, Kohji Sakai
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Publication number: 20160263913Abstract: There is provided a process liquid coating apparatus comprising: a recording medium conveyance unit configured to convey a recording medium; a coating roller configured to rotate in accordance with the conveyed recording medium to apply process liquid on a surface of the recording medium; a pressure roller configured to cause the coating roller to apply the process liquid on the surface of the recording medium by forming an abutment part for nipping and pressing the recording medium with the coating roller; and a winding member configured to form a bent conveyance path along which the recording medium is bent with respect to a conveyance direction so that the recording medium is wound around the surface of the pressure roller, wherein the winding member is disposed adjacent to the pressure roller.Type: ApplicationFiled: February 9, 2016Publication date: September 15, 2016Applicant: RICOH COMPANY, LTD.Inventors: Kazuhiro AKATSU, Yutaka NAGASAWA, Akitomo KUWABARA, Yuuji OHMURA, Hirofumi OHKUSHI, Hirotaka KOBAYASHI, Sho SAWAHATA
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Patent number: 9193197Abstract: A liquid droplet detecting device includes nozzles arranged in a paper width direction orthogonal to a paper conveying direction to discharge liquid droplets, a light emitting element provided on one side of the paper width direction to emit a light beam for liquid droplet detection, a light receiving element provided on the other side of the paper width direction to receive the light beam, a storage in which correspondence information on each of the nozzles and a scan position of the light beam when discharge of a liquid droplet from each of the nozzles is detected is stored, a controller to allow the light beam to scan according to the correspondence information, and a detector to determine presence or absence a liquid droplet discharged from each nozzle from an output of the light receiving element.Type: GrantFiled: February 11, 2015Date of Patent: November 24, 2015Assignee: Ricoh Company, Ltd.Inventors: Genichiro Kawamichi, Shigeru Morinaga, Hideharu Miki, Hiroshi Ando, Kahei Nakamura, Kazuhiro Akatsu, Hirotaka Kobayashi, Keiichi Watanabe
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Publication number: 20150224802Abstract: A liquid droplet detecting device includes nozzles arranged in a paper width direction orthogonal to a paper conveying direction to discharge liquid droplets, a light emitting element provided on one side of the paper width direction to emit a light beam for liquid droplet detection, a light receiving element provided on the other side of the paper width direction to receive the light beam, a storage in which correspondence information on each of the nozzles and a scan position of the light beam when discharge of a liquid droplet from each of the nozzles is detected is stored, a controller to allow the light beam to scan according to the correspondence information, and a detector to determine presence or absence a liquid droplet discharged from each nozzle from an output of the light receiving element.Type: ApplicationFiled: February 11, 2015Publication date: August 13, 2015Applicant: RICOH COMPANY, LTD.Inventors: Genichiro Kawamichi, Shigeru Morinaga, Hideharu Miki, Hiroshi Ando, Kahei Nakamura, Kazuhiro Akatsu, Hirotaka Kobayashi, Keiichi Watanabe
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Publication number: 20150160341Abstract: An object detector includes a projector including a light source having a two-dimensionally arranged plurality of light emitter groups, each of the light emitter groups having a plurality of light emitters, a light receiver which receives light emitted from the projector, and reflected by an object, and a light source driver which lights on and lights off each of the light emitter groups of the light source.Type: ApplicationFiled: November 26, 2014Publication date: June 11, 2015Inventors: Kazuhiro AKATSU, Tadashi Nakamura, Kohji Sakai