Patents by Inventor Yutaka Korogi
Yutaka Korogi 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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Patent number: 8740326Abstract: A recording medium lift detection apparatus for detecting a lift of a recording medium that is conveyed on a predetermined conveyance surface along a predetermined conveyance path, includes: a light projection/receiving, a light projection parallel flat plate, a light projection turning device, a control device and a recording medium lift detection control device.Type: GrantFiled: August 30, 2011Date of Patent: June 3, 2014Assignee: FUJIFILM CorporationInventors: Yutaka Korogi, Takashi Fukui
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Patent number: 8727469Abstract: An image forming apparatus comprising: a conveying unit; a liquid droplet jetting head that jets liquid droplets onto a recording medium conveyed by the conveying unit; an uplift amount detection unit that is provided at the recording medium conveying direction upstream side of the liquid droplet jetting head, projects and receives light along the conveying unit, and detects an uplift amount of the recording medium; a control unit that lowers the conveying speed of the conveying unit or separates the liquid droplet jetting head from the conveying unit when the uplift amount detected is a threshold value or greater; a temperature detection unit that detects temperatures; and a correcting unit that corrects the threshold value or the uplift amount based on the temperature difference between a temperature detected at the periphery of the uplift amount detection unit and a temperature detected at the periphery of the liquid droplet jetting heads.Type: GrantFiled: February 22, 2012Date of Patent: May 20, 2014Assignee: FUJIFILM CorporationInventors: Kazumasa Hattori, Yutaka Korogi
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Patent number: 8632156Abstract: A paper floating detection apparatus is arranged at a conveyance path of a conveyance device which holds paper on a conveyance surface and conveys the paper in a conveyance direction while causing a surface of the paper to face a droplet ejection head. The detection apparatus includes: a light emission unit and a light reception unit arranged to face each other across the conveyance path, such that an optical path of detection light emitted from the light emission unit and received by the light reception unit is substantially perpendicular to the conveyance direction, floating up of the paper from the conveyance surface being detected by detecting that the conveyed paper has shielded the detection light; and an air flow diverting guide member which is arranged in a periphery of the optical path and configured to prevent inflow of air having a temperature differential sufficient to affect the optical path.Type: GrantFiled: March 28, 2011Date of Patent: January 21, 2014Assignee: Fujifilm CorporationInventors: Yutaka Korogi, Tatsuya Nitta
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Patent number: 8622495Abstract: A paper floating detection apparatus which detects floating of paper conveyed along a prescribed conveyance path on a prescribed conveyance surface, includes: a paper floating detection device which includes a light emission unit and a light reception unit disposed so as to be mutually opposing across the conveyance path, and detects whether the paper floats or not according to whether a detection beam emitted parallel to the conveyance surface from the light emission unit toward the light reception unit in a position at a prescribed height from the conveyance surface is received by the light reception unit or not; a light emission parallel flat plate which is disposed in front of the light emission unit in such a manner that the detection beam emitted from the light emission unit passes through the light emission parallel flat plate, and which is provided rotatably about an axis parallel to the conveyance surface and perpendicular to the detection beam in such a manner that the height of the detection beam eType: GrantFiled: March 16, 2011Date of Patent: January 7, 2014Assignee: FUJIFILM CorporationInventor: Yutaka Korogi
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Publication number: 20120218328Abstract: An image forming apparatus comprising: a conveying unit; a liquid droplet jetting head that jets liquid droplets onto a recording medium conveyed by the conveying unit; an uplift amount detection unit that is provided at the recording medium conveying direction upstream side of the liquid droplet jetting head, projects and receives light along the conveying unit, and detects an uplift amount of the recording medium; a control unit that lowers the conveying speed of the conveying unit or separates the liquid droplet jetting head from the conveying unit when the uplift amount detected is a threshold value or greater; a temperature detection unit that detects temperatures; and a correcting unit that corrects the threshold value or the uplift amount based on the temperature difference between a temperature detected at the periphery of the uplift amount detection unit and a temperature detected at the periphery of the liquid droplet jetting heads.Type: ApplicationFiled: February 22, 2012Publication date: August 30, 2012Applicant: FUJIFILM CORPORATIONInventors: Kazumasa HATTORI, Yutaka KOROGI
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Patent number: 8204089Abstract: There is provided a mode locked laser device including: a cavity, the cavity having a semiconductor saturable absorbing mirror and a negative dispersion mirror that controls group velocity dispersion within the cavity, disposed in a straight line; a solid-state laser medium, disposed in the cavity and outputting oscillating light due to excitation light being incident thereon; an excitation unit that causes the excitation light to be incident on the solid-state laser medium; and a cavity holder, the light incident face of the semiconductor saturable absorbing mirror attached to one end of the cavity holder, the negative dispersion mirror attached to the other end of the cavity holder, and the cavity holder integrally supporting the semiconductor saturable absorbing mirror and the negative dispersion mirror.Type: GrantFiled: October 20, 2009Date of Patent: June 19, 2012Assignee: FUJIFILM CorporationInventors: Tadashi Kasamatsu, Shogo Yamazoe, Yutaka Korogi
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Publication number: 20120050373Abstract: A recording medium lift detection apparatus for detecting a lift of a recording medium that is conveyed on a predetermined conveyance surface along a predetermined conveyance path, includes: a light projection/receiving, a light projection parallel flat plate, a light projection turning device, a control device and a recording medium lift detection control device.Type: ApplicationFiled: August 30, 2011Publication date: March 1, 2012Inventors: Yutaka Korogi, Takashi Fukui
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Publication number: 20110234675Abstract: A paper floating detection apparatus is arranged at a conveyance path of a conveyance device which holds paper on a conveyance surface and conveys the paper in a conveyance direction while causing a surface of the paper to face a droplet ejection head. The detection apparatus includes: a light emission unit and a light reception unit arranged to face each other across the conveyance path, such that an optical path of detection light emitted from the light emission unit and received by the light reception unit is substantially perpendicular to the conveyance direction, floating up of the paper from the conveyance surface being detected by detecting that the conveyed paper has shielded the detection light; and an air flow diverting guide member which is arranged in a periphery of the optical path and configured to prevent inflow of air having a temperature differential sufficient to affect the optical path.Type: ApplicationFiled: March 28, 2011Publication date: September 29, 2011Inventors: Yutaka KOROGI, Tatsuya NITTA
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Publication number: 20110227985Abstract: A paper floating detection apparatus which detects floating of paper conveyed along a prescribed conveyance path on a prescribed conveyance surface, includes: a paper floating detection device which includes a light emission unit and a light reception unit disposed so as to be mutually opposing across the conveyance path, and detects whether the paper floats or not according to whether a detection beam emitted parallel to the conveyance surface from the light emission unit toward the light reception unit in a position at a prescribed height from the conveyance surface is received by the light reception unit or not; a light emission parallel flat plate which is disposed in front of the light emission unit in such a manner that the detection beam emitted from the light emission unit passes through the light emission parallel flat plate, and which is provided rotatably about an axis parallel to the conveyance surface and perpendicular to the detection beam in such a manner that the height of the detection beam eType: ApplicationFiled: March 16, 2011Publication date: September 22, 2011Inventor: Yutaka KOROGI
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Publication number: 20100103960Abstract: There is provided a mode locked laser device including: a cavity, the cavity having a semiconductor saturable absorbing mirror and a negative dispersion mirror that controls group velocity dispersion within the cavity, disposed in a straight line; a solid-state laser medium, disposed in the cavity and outputting oscillating light due to excitation light being incident thereon; an excitation unit that causes the excitation light to be incident on the solid-state laser medium; and a cavity holder, the light incident face of the semiconductor saturable absorbing mirror attached to one end of the cavity holder, the negative dispersion mirror attached to the other end of the cavity holder, and the cavity holder integrally supporting the semiconductor saturable absorbing mirror and the negative dispersion mirror.Type: ApplicationFiled: October 20, 2009Publication date: April 29, 2010Applicant: FUJIFILM CORPORATIONInventors: Tadashi KASAMATSU, Shogo YAMAZOE, Yutaka KOROGI
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Publication number: 20090209824Abstract: Safe and inexpensive visual confirmation of the scanning position of an OCT optical probe, which is inserted into a forceps channel of an endoscope, is provided. The OCT optical probe to be inserted into a forceps channel of an endoscope that applies illumination light to a site to be observed in a body cavity and images reflected light from the site to be observed, includes: a substantially cylindrical and long sheath to be inserted into the body cavity; a distal end optical system disposed in the sheath and being rotatable about the longitudinal axis of the sheath; and a ferrule integrally fixed to the distal end optical system, wherein the ferrule includes a reflecting section adapted to reflect a part of the illumination light toward the endoscope.Type: ApplicationFiled: February 9, 2009Publication date: August 20, 2009Applicants: FUJIFILM Corporation, Fujinon CorporationInventor: Yutaka Korogi
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Publication number: 20090198125Abstract: An OCT optical probe to be inserted into a subject includes: a cylindrical sheath to be inserted into a subject; an optical fiber disposed in the internal space of the sheath; a rotatably-supporting portion fixed to the optical fiber in the vicinity of a distal end of the optical fiber; a distal optical system to deflect light emitted from the distal end of the optical fiber toward the subject; a holding portion to hold the distal optical system such that the optical system is rotatably supported by the rotatably-supporting portion; and a flexible shaft covering the optical fiber in the internal space, wherein the holding portion is fixed to a distal end of the flexible shaft. Using the OCT optical probe of the invention, the problem of degradation of measurement accuracy due to optical insertion loss and optical reflection loss at a rotary joint can be eliminated inexpensively and safely.Type: ApplicationFiled: January 30, 2009Publication date: August 6, 2009Applicants: FUJIFILM CORPORATION, FUJINON CORPORATIONInventors: Koki NAKABAYASHI, Masahiro TOIDA, Kiichi KATO, Yutaka KOROGI, Tadashi MASUDA
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Patent number: 7145639Abstract: A spatial light modulating method performs spatial light modulation of light produced by a light source. The method includes forming an image of a two-dimensional pattern of the light, which has been obtained from the spatial light modulation, on a photosensitive material, using an image-sided telecentric optical system. The method further includes altering an axial air separation, upstream of the photosensitive material, to thereby adjust a focusing point at the time of the formation of the image of the two-dimensional pattern of the light.Type: GrantFiled: April 25, 2005Date of Patent: December 5, 2006Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiromi Ishikawa, Masahiro Ohba, Norihasa Takada, Yutaka Korogi
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Publication number: 20050185157Abstract: A spatial light modulator performs spatial light modulation of light produced by a light source. An image-side telecentric image forming optical system forms an image of a two-dimensional pattern of the light, which has been obtained from the spatial light modulation, on a photosensitive material. An axial air separation adjusting section is located between the image forming optical system and the photosensitive material. The axial air separation adjusting section alters an axial air separation between the image forming optical system and the photosensitive material and thereby adjusts a focusing point at the time of the formation of the image of the two-dimensional pattern of the light.Type: ApplicationFiled: April 25, 2005Publication date: August 25, 2005Inventors: Hiromi Ishikawa, Masahiro Ohba, Norihisa Takada, Yutaka Korogi
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Patent number: 6930761Abstract: A spatial light modulator performs spatial light modulation of light produced by a light source. An image-side telecentric image forming optical system forms an image of a two-dimensional pattern of the light, which has been obtained from the spatial light modulation, on a photosensitive material. An axial air separation adjusting section is located between the image forming optical system and the photosensitive material. The axial air separation adjusting section alters an axial air separation between the image forming optical system and the photosensitive material and thereby adjusts a focusing point at the time of the formation of the image of the two-dimensional pattern of the light.Type: GrantFiled: May 6, 2004Date of Patent: August 16, 2005Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiromi Ishikawa, Masahiro Ohba, Norihisa Takada, Yutaka Korogi
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Publication number: 20040223129Abstract: A spatial light modulator performs spatial light modulation of light produced by a light source. An image-side telecentric image forming optical system forms an image of a two-dimensional pattern of the light, which has been obtained from the spatial light modulation, on a photosensitive material. An axial air separation adjusting section is located between the image forming optical system and the photosensitive material. The axial air separation adjusting section alters an axial air separation between the image forming optical system and the photosensitive material and thereby adjusts a focusing point at the time of the formation of the image of the two-dimensional pattern of the light.Type: ApplicationFiled: May 6, 2004Publication date: November 11, 2004Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Hiromi Ishikawa, Masahiro Ohba, Norihisa Takada, Yutaka Korogi
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Patent number: 4937683Abstract: An image recording apparatus for focusing an image recored on an original onto a film so as to form an image on the film. The apparatus has a movable original table, a scanning mirror device adapted to be moved in accordance with the movement of the original so as to scan the image on the original, and a lens for focusing the light reflected from the scanning mirror onto the film which is held stationary. Since the lens and the film are not required to move, the image can be focused on the film with a high degree of precision.Type: GrantFiled: May 27, 1988Date of Patent: June 26, 1990Assignee: Fuji Photo Co., Ltd.Inventors: Keiichi Yamana, Yutaka Korogi