Patents by Inventor Takehiro Niitsu
Takehiro Niitsu 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: 9969184Abstract: A droplet ejection device includes: a droplet ejection head that ejects a droplet to a recording medium; an irradiating portion that evaporates moisture of the droplet landed on the recording medium by irradiating the recording medium with infrared laser beam; and a light shielding member that includes an upper light shielding member provided on a perimeter of the irradiating portion and a lower light shielding member provided on a position facing the irradiating portion and the upper light shielding portion while placing the recording medium therebetween, in which the upper light shielding portion and the lower light shielding portion are in contact with each other at an outside of the recording medium in the width direction so that the light shielding member shields the infrared laser beam at least in the width direction of the recording medium.Type: GrantFiled: December 5, 2016Date of Patent: May 15, 2018Assignee: Fuji Xerox Co., Ltd.Inventors: Jun Isozaki, Akira Sakamoto, Takehiro Niitsu, Hiroyuki Tsukuni, Yukari Motosugi
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Patent number: 9873265Abstract: An irradiation device includes: an irradiation unit that irradiates a target with light; at least one component that is arranged in an advancing direction of light reflected by the target; and a light blocking unit that is arranged between the target and the at least one component in the advancing direction and blocks the reflected light.Type: GrantFiled: November 9, 2016Date of Patent: January 23, 2018Assignee: Fuji Xerox Co., Ltd.Inventors: Takehiro Niitsu, Jun Isozaki, Hiroyuki Tsukuni, Akira Sakamoto
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Publication number: 20180001668Abstract: A droplet ejection device includes: a droplet ejection head that ejects a droplet to a recording medium; an irradiating portion that evaporates moisture of the droplet landed on the recording medium by irradiating the recording medium with infrared laser beam; and a light shielding member that includes an upper light shielding member provided on a perimeter of the irradiating portion and a lower light shielding member provided on a position facing the irradiating portion and the upper light shielding portion while placing the recording medium therebetween, in which the upper light shielding portion and the lower light shielding portion are in contact with each other at an outside of the recording medium in the width direction so that the light shielding member shields the infrared laser beam at least in the width direction of the recording medium.Type: ApplicationFiled: December 5, 2016Publication date: January 4, 2018Inventors: Jun Isozaki, Akira Sakamoto, Takehiro Niitsu, Hiroyuki Tsukuni, Yukari Motosugi
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Publication number: 20170361625Abstract: An irradiation device includes: an irradiation, unit that irradiates a target with light; at least one component that is arranged in an advancing direction of light reflected by the target; and a light blocking unit that is arranged between the target and the at least one component in the advancing direction and blocks the reflected light.Type: ApplicationFiled: November 9, 2016Publication date: December 21, 2017Inventors: Takehiro Niitsu, Jun Isozaki, Hiroyuki Tsukuni, Akira Sakamoto
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Patent number: 9809038Abstract: A droplet drying device includes a plurality of light emitting devices arranged in a two-dimensional manner to irradiate droplets with light to dry the droplets, the droplets being ejected on a recording medium by an ejection unit, a regular irradiation capability portion provided in a region corresponding to an image forming region of the recording medium where an image is formed, the regular irradiation capability portion having a predetermined light irradiation capability, and a low irradiation capability portion provided in a region corresponding to a region of the recording medium set to have a lower image-forming density than the image forming region, a light irradiation capability of the low irradiation capability portion being lower than the predetermined light irradiation capability.Type: GrantFiled: August 16, 2016Date of Patent: November 7, 2017Assignee: Fuji Xerox Co., Ltd.Inventors: Takuma Ishihara, Takeshi Zengo, Takehiro Niitsu, Akira Sakamoto
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Publication number: 20170217210Abstract: A droplet drying device includes a plurality of light emitting devices arranged in a two-dimensional manner to irradiate droplets with light to dry the droplets, the droplets being ejected on a recording medium by an ejection unit, a regular irradiation capability portion provided in a region corresponding to an image forming region of the recording medium where an image is formed, the regular irradiation capability portion having a predetermined light irradiation capability, and a low irradiation capability portion provided in a region corresponding to a region of the recording medium set to have a lower image forming density than the image forming region, a light irradiation capability of the low irradiation capability portion being lower than the predetermined Hein irradiation capability.Type: ApplicationFiled: August 16, 2016Publication date: August 3, 2017Inventors: Takuma Ishihara, Takeshi Zengo, Takehiro Niitsu, Akira Sakamoto
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Publication number: 20170212459Abstract: A fixing device includes a heating member that includes a substrate having a substantially flat portion and a recess in a surface on one side, a heating body provided on the substantially flat portion of the substrate and that generates heat with a supply of electric current, a resistive element provided in the recess of the substrate and that is connected in series to the heating body, the resistive element having a positive temperature coefficient, and a protective layer provided over the heating body and the resistive element and that protects the heating body and the resistive element; a belt member that is heated by being in contact with the surface, on the one side, of the substrate of the heating member, the belt member being rotatable; and a pressing member that is pressed against the belt member and forms a nip part.Type: ApplicationFiled: August 5, 2016Publication date: July 27, 2017Applicant: FUJI XEROX CO., LTD.Inventors: Shuichi YAMADA, Takehiro NIITSU, Koichi HAGA, Kazuhiro HAYASHI, Mutsuya TAKAHASHI, Michiaki MURATA
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Patent number: 9340041Abstract: There is provided a drying device including a plurality of surface-emitting laser elements each having a plurality of laser elements and arranged along a feeding direction of a recording medium. First power supplying pads are respectively provided at both ends of an electrode on a laser illumination surface of each surface-emitting laser element in a width direction of the recording medium and a second power supplying pad is provided at one end of the electrode on a backside of each surface-emitting laser element in the feeding direction. The respective first power supplying pads of the surface-emitting laser element arranged at an upstream-side in the feeding direction and the second power supplying pad of the surface-emitting laser element arranged at a downstream-side in the feeding direction are connected to each other by wires.Type: GrantFiled: January 26, 2015Date of Patent: May 17, 2016Assignee: FUJI XEROX CO., LTD.Inventors: Takehiro Niitsu, Jun Isozaki, Yasuhiro Ogasawara, Hiroyuki Tsukuni, Akira Sakamoto, Naoki Morita
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Patent number: 9321282Abstract: A drying device includes a laser element that irradiates an irradiation region with a laser, the irradiation region including a plurality of droplets on a recording medium which are ejected by an ejection unit, ejecting droplets according to an image, along a transport direction of the recording medium and a direction crossing the transport direction.Type: GrantFiled: September 2, 2014Date of Patent: April 26, 2016Assignee: Fuji Xerox Co., Ltd.Inventors: Jun Isozaki, Akira Sakamoto, Takehiro Niitsu, Yasuhiro Ogasawara, Takeshi Zengo, Naoki Morita
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Publication number: 20160059583Abstract: There is provided a drying device including a plurality of surface-emitting laser elements each having a plurality of laser elements and arranged along a feeding direction of a recording medium. First power supplying pads are respectively provided at both ends of an electrode on a laser illumination surface of each surface-emitting laser element in a width direction of the recording medium and a second power supplying pad is provided at one end of the electrode on a backside of each surface-emitting laser element in the feeding direction. The respective lust power supplying pads of the surface-emitting laser element arranged at an upstream-side in the feeding direction and the second power supplying pad of the surface-emitting laser element arranged at a downstream-side in the feeding direction are connected to each other by wires.Type: ApplicationFiled: January 26, 2015Publication date: March 3, 2016Inventors: Takehiro Niitsu, Jun Isozaki, Yasuhiro Ogasawara, Hiroyuki Tsukuni, Akira Sakamoto, Naoki Morita
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Publication number: 20150251449Abstract: A drying device includes a laser element that irradiates an irradiation region with a laser, the irradiation region including a plurality of droplets on a recording medium which are ejected by an ejection unit, ejecting droplets according to an image, along a transport direction of the recording medium and a direction crossing the transport direction.Type: ApplicationFiled: September 2, 2014Publication date: September 10, 2015Inventors: Jun Isozaki, Akira Sakamoto, Takehiro Niitsu, Yasuhiro Ogasawara, Takeshi Zengo, Naoki Morita
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Patent number: 9114638Abstract: A droplets drying device includes: an illuminating unit that applies infrared laser light to droplets that have been ejected onto a recording medium by an ejecting unit that ejects droplets in accordance with an image to be formed; and a control unit that controls at least one of timing, a position or positions, and an amount or amounts of application of infrared laser light to the droplets by the illuminating unit in accordance with an attribute that influences image quality of an image formed.Type: GrantFiled: June 10, 2014Date of Patent: August 25, 2015Assignee: Fuji Xerox Co., Ltd.Inventors: Yasuhiro Ogasawara, Naoki Morita, Manabu Numata, Akira Sakamoto, Mami Hatanaka, Yukari Motosugi, Takeshi Zengo, Jun Isozaki, Takehiro Niitsu, Atsushi Murakami, Masaki Kobayashi
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Publication number: 20150158311Abstract: A droplets drying device includes: an illuminating unit that applies infrared laser light to droplets that have been ejected onto a recording medium by an ejecting unit that ejects droplets in accordance with an image to be formed; and a control unit that controls at least one of timing, a position or positions, and an amount or amounts of application of infrared laser light to the droplets by the illuminating unit in accordance with an attribute that influences image quality of an image formed.Type: ApplicationFiled: June 10, 2014Publication date: June 11, 2015Applicant: FUJI XEROX CO., LTD.Inventors: Yasuhiro Ogasawara, Naoki Morita, Manabu Numata, Akira Sakamoto, Mami Hatanaka, Yukari Motosugi, Takeshi Zengo, Jun Isozaki, Takehiro Niitsu, Atsushi Murakami, Masaki Kobayashi
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Patent number: 7924861Abstract: A signal communication apparatus includes a transmission component, a reception component and an identification information storage component. The transmission component is connectable to an information processing device and a signal propagation medium, and transmits an inputted image signal through the connected signal propagation medium. The reception component is connectable with an image display device and the signal propagation medium, receives the image signal transmitted from the transmission component through the connected signal propagation medium, and outputs the image signal to the connected image display device. The identification information storage component is removably attached to the transmission component, and stores identification information for identifying the image display device.Type: GrantFiled: November 15, 2005Date of Patent: April 12, 2011Assignee: Fuji Xerox Co., Ltd.Inventors: Tomo Baba, Kazuhiro Suzuki, Hisayoshi Mori, Kazuhiro Sakai, Junji Okada, Masao Funada, Shinobu Ozeki, Shinya Kyozuka, Takehiro Niitsu, Hidenori Yamada
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Patent number: 7796848Abstract: An electronic apparatus includes: a first frame and a second frame that are relatively movable; a frame boundary portion that is provided between the first frame and the second frame; a light emitting portion that is provided on the first frame and transmits an optical signal; a light receiving portion that is provided on the second frame and receives the optical signal; and an optical transmission medium that transmits the optical signal between the frame boundary portion and at least one of the light emitting portion and the light receiving portion, wherein an optical transmission between the light emitting portion and the light receiving portion via the optical transmission medium is effected at the frame boundary portion by a spatial optical transmission.Type: GrantFiled: October 30, 2006Date of Patent: September 14, 2010Assignee: Fuji Xerox Co., Ltd.Inventors: Osamu Ueno, Masao Funada, Tsutomu Hamada, Junji Okada, Takehiro Niitsu
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Publication number: 20100226656Abstract: An optical waveguide includes a first waveguide region and a second waveguide region. The first waveguide region includes a first core, a first clad provided around the first core, and a light reflecting surface. The light reflecting surface has at least one function of (i) reflecting light from a longitudinal direction of the first core toward a direction crossing the longitudinal direction and (ii) reflecting light from the crossing direction toward the longitudinal direction of the first core. The second waveguide region continues from the first waveguide region. The second waveguide region that includes a second core, and a second clad provided around the second core. The second core of the second waveguide region is thinner than the first core of the first waveguide region. A total thickness of the second core and the second clad is smaller than that of the first core and the first clad.Type: ApplicationFiled: August 13, 2009Publication date: September 9, 2010Applicant: FUJI XEROX CO., LTD.Inventors: Takehiro Niitsu, Akira Sakamoto, Masahiro Yoshikawa
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Patent number: 7394989Abstract: A transmission unit of a signal transmission device includes: a transmission-side detection unit that detects image information from an inputted electrical signal; a receiving unit that receives, from a reception unit, a status signal representing an arrival status of an outputted optical signal; and a control unit that controls an electrical-optical conversion unit on the basis of the detection result of the transmission-side detection unit and the status signal of the receiving unit so that the output of the optical signal is shut down in at least one of a case where image information is not included in an electrical signal and a case where an optical signal has not arrived.Type: GrantFiled: October 13, 2004Date of Patent: July 1, 2008Assignee: Fuji Xerox Co., Ltd.Inventors: Shinobu Ozeki, Kenichi Kobayashi, Hidenori Yamada, Shinya Kyozuka, Takehiro Niitsu, Kazuhiro Suzuki, Tomo Baba, Osamu Takanashi
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Publication number: 20070297727Abstract: An electronic apparatus includes: a first frame and a second frame that are relatively movable; a frame boundary portion that is provided between the first frame and the second frame; a light emitting portion that is provided on the first frame and transmits an optical signal; a light receiving portion that is provided on the second frame and receives the optical signal; and an optical transmission medium that transmits the optical signal between the frame boundary portion and at least one of the light emitting portion and the light receiving portion, wherein an optical transmission between the light emitting portion and the light receiving portion via the optical transmission medium is effected at the frame boundary portion by a spatial optical transmission.Type: ApplicationFiled: October 30, 2006Publication date: December 27, 2007Inventors: Osamu Ueno, Masao Funada, Tsutomu Hamada, Junji Okada, Takehiro Niitsu
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Patent number: 7308205Abstract: In an optical transmission apparatus in which a plurality of nodes are optically connected to one another via an optical transmission path, a light signal which is coded so that a mixture ratio of 1 and 0 constituting data is made close to 50% is transmitted through the optical transmission path. When a light signal is not emitted from all of the nodes, a dummy signal which is an AC-like signal is emitted to the optical transmission path. Therefore, an optoelectric conversion section can be always set to an active state, and the signal recognizability can be prevented from being lowered.Type: GrantFiled: March 27, 2003Date of Patent: December 11, 2007Assignee: Fuji Xerox Co., Ltd.Inventors: Shinobu Ozeki, Akira Toshima, Masao Funada, Kenichi Kobayashi, Hidenori Yamada, Takeshi Kamimura, Yoshihide Sato, Junji Okada, Takehiro Niitsu, Shinya Kyozuka, Kazuhiro Sakai, Kazuhiro Suzuki, Tomo Baba, Tsutomu Hamada, Masaru Kijima, Osamu Takanashi, Masaaki Miura, Osamu Ueno
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Patent number: 7245832Abstract: An optical bus 30 optically connects each board of a signal processing section 22 and each board of a transmission/reception section 40 for transmitting an optical signal output to the optical bus 30 by each board of the signal processing section 22 to each board of the transmission/reception section 40 in a non-block state. In contrast, the optical bus 30 transmits an optical signal output to the optical bus 30 by each board of the transmission/reception section 40 to each board of the signal processing section 22 in a non-block state.Type: GrantFiled: February 11, 2002Date of Patent: July 17, 2007Assignee: Fuji Xerox Co., Ltd.Inventors: Tomo Baba, Masao Funada, Takeshi Kamimura, Hidenori Yamada, Junji Okada, Shinya Kyozuka, Kazuhiro Sakai, Tsutomu Hamada, Shinobu Ozeki, Osamu Takanashi, Masaaki Miura, Takehiro Niitsu, Masashi Hisada, Kenichi Kobayashi, Akira Toshima