Patents by Inventor Ken Tsuchiya
Ken Tsuchiya 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: 11429034Abstract: A light emitting device includes a first light-emitting-element row that includes light emitting elements arranged in a row in a main scanning direction and a second light-emitting-element row that includes light emitting elements arranged in a row in the main scanning direction and that is positioned in such a manner that at least a portion of the second light-emitting-element row overlaps the first light-emitting-element row in a sub scanning direction. The first and second light-emitting-element rows are each formed by arranging light-emitting-element array chips in each of which the light emitting elements are arranged in a row in the main scanning direction. In each of the light-emitting-element array chips, a pitch of the light emitting elements arranged in a row is changed from a first pitch to a second pitch, which is different from the first pitch, in a central region of the row of the light emitting elements.Type: GrantFiled: May 12, 2021Date of Patent: August 30, 2022Assignee: FUJIFILM Business Innovation Corp.Inventors: Kyoji Yagi, Ken Tsuchiya, Seiji Ono
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Publication number: 20220128923Abstract: A light emitting device includes a first light-emitting-element row that includes light emitting elements arranged in a row in a main scanning direction and a second light-emitting-element row that includes light emitting elements arranged in a row in the main scanning direction and that is positioned in such a manner that at least a portion of the second light-emitting-element row overlaps the first light-emitting-element row in a subscanning direction. The first light-emitting-element row and the second light-emitting-element row are each formed by arranging light-emitting-element array chips in each of which the light emitting elements are arranged in a row in the main scanning direction. In each of the light-emitting-element array chips, a pitch of the light emitting elements arranged in a row is changed from a first pitch to a second pitch, which is different from the first pitch, in a central region of the row of the light emitting elements.Type: ApplicationFiled: May 12, 2021Publication date: April 28, 2022Applicant: FUJIFILM Business Innovation Corp.Inventors: Kyoji YAGI, Ken TSUCHIYA, Seiji ONO
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Publication number: 20220091532Abstract: An image forming apparatus includes a toner-image-forming unit that forms a toner image by using a first light-emitting-device arrangement and a second light-emitting-device arrangement in each of which light-emitting devices are arranged in lines extending in a first scanning direction, the second light-emitting-device arrangement overlapping the first light-emitting-device arrangement in a second scanning direction at least in part, and an optical device that forms an electrostatic latent image by focusing light emitted from the light-emitting devices on a photoconductor and exposing the photoconductor to the light; a transfer unit that transfers the toner image to a recording medium; a fixing unit that fixes the toner image transferred to the recording medium and finishes the image; a switching unit that switches the light-emitting-device arrangement to be lit up between the first light-emitting-device arrangement and the second light-emitting-device arrangement at a switching position defined at any positType: ApplicationFiled: January 14, 2021Publication date: March 24, 2022Applicant: FUJI XEROX CO., LTD.Inventors: Shigeru ARAI, Kyoji YAGI, Ken TSUCHIYA
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Publication number: 20210021762Abstract: The present invention provides an optical transmission system for optical transmission of a signal between a first and a second adaptors, wherein the first and the second adaptors each include an input terminal, a determination unit, and a display unit, a first signal is input to the input terminal, the first signal being an analog video signal or a digital video signal, the determination unit is configured to determine whether the first signal is the analog video signal or the digital video signal and to determine a type of the digital video signal when the first signal is the digital video signal, and the display unit is configured to display information obtained in determination by the determination unit.Type: ApplicationFiled: July 15, 2020Publication date: January 21, 2021Applicant: Nihon Video System Co., Ltd.Inventors: Kentaro Hashiguchi, Akikazu Hashiguchi, Ken Tsuchiya, Hidetake Sugita
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Patent number: 9571804Abstract: Provided are an optical transmission system in which one can easily set a video signal cable, and an adapter that can be used in this system. There is provided an adapter for use in an optical transmission system in which an analog video signal or a digital video signal is transmitted between a pair of adapters using light. The adapter includes a first signal determination unit configured to make a determination as to whether a first electrical signal inputted to a common input terminal is an analog video signal or a digital video signal.Type: GrantFiled: October 19, 2015Date of Patent: February 14, 2017Assignee: Nihon Video System Co., Ltd.Inventors: Kentaro Hashiguchi, Ken Tsuchiya
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Publication number: 20160150198Abstract: Provided are an optical transmission system in which one can easily set a video signal cable, and an adapter that can be used in this system. There is provided an adapter for use in an optical transmission system in which an analog video signal or a digital video signal is transmitted between a pair of adapters using light. The adapter includes a first signal determination unit configured to make a determination as to whether a first electrical signal inputted to a common input terminal is an analog video signal or a digital video signal.Type: ApplicationFiled: October 19, 2015Publication date: May 26, 2016Applicant: Nihon Video System Co., Ltd.Inventors: Kentaro Hashiguchi, Ken Tsuchiya
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Patent number: 9030514Abstract: A light scanning device includes a scanning unit and a power consumption unit. The scanning unit faces a scan surface and performs scanning by dividing one scan area into segments by having multiple light-emitting-element groups arranged in a predetermined scanning direction. Each light-emitting-element group writes an image onto the scan surface by causing multiple light-emitting elements arranged in the scanning direction to emit light in a time-division manner based on image information. The power consumption unit operates during a non-writing period occurring between scanning processes repeatedly executed in each light-emitting-element group, so as to cause consumption of electric power corresponding to electric power consumed for light emission in the light-emitting-element group.Type: GrantFiled: May 27, 2014Date of Patent: May 12, 2015Assignee: Fuji Xerox Co., Ltd.Inventor: Ken Tsuchiya
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Publication number: 20150103128Abstract: A light scanning device includes a scanning unit and a power consumption unit. The scanning unit faces a scan surface and performs scanning by dividing one scan area into segments by having multiple light-emitting-element groups arranged in a predetermined scanning direction. Each light-emitting-element group writes an image onto the scan surface by causing multiple light-emitting elements arranged in the scanning direction to emit light in a time-division manner based on image information. The power consumption unit operates during a non-writing period occurring between scanning processes repeatedly executed in each light-emitting-element group, so as to cause consumption of electric power corresponding to electric power consumed for light emission in the light-emitting-element group.Type: ApplicationFiled: May 27, 2014Publication date: April 16, 2015Applicant: FUJI XEROX CO., LTD.Inventor: Ken TSUCHIYA
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Patent number: 8947486Abstract: A light emitting element head includes a first light emitting element array, a second light emitting element array, and an optical device. The first light emitting element array includes a plurality of light emitting elements arranged in a main scan direction. The second light emitting element array includes a plurality of light emitting elements arranged in the main scan direction. The optical device focuses a light output from the first light emitting element array and the second light emitting element array on a photoreceptor to form an electrostatic latent image on the photoreceptor. The first light emitting element array and the second light emitting element array are overlapped each other in a sub scan direction in an overlapping section. Interval between the light emitting elements of the first light emitting element array are different from interval between the light emitting elements of the second light emitting element array.Type: GrantFiled: November 21, 2011Date of Patent: February 3, 2015Assignee: Fuji Xerox Co., Ltd.Inventor: Ken Tsuchiya
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Patent number: 8368734Abstract: An exposure device includes a plurality of light-emitting elements, a lighting driver, a first storage, a reader, a shading correction unit and a second storage. The lighting driver drives and lights up the light-emitting elements based on image data. The first storage stores light amount unevenness correction values of the respective light-emitting elements. The reader reads the light amount unevenness correction values stored in the first storage. The shading correction unit executes shading correction for the light amount unevenness correction values read by the reader. The second storage stores correction values obtained by having the shading correction unit to execute the shading correction for the light amount unevenness correction values. The lighting driver controls light power of the respective light-emitting elements based on the correction values stored in the second storage.Type: GrantFiled: August 27, 2009Date of Patent: February 5, 2013Assignee: Fuji Xerox Co., Ltd.Inventors: Ken Tsuchiya, Michio Taniwaki, Fumihiko Ogasawara, Toshio Hisamura, Osamu Yasui, Michihiro Inoue
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Publication number: 20120194629Abstract: A light emitting element head includes a first light emitting element array, a second light emitting element array, and an optical device. The first light emitting element array includes a plurality of light emitting elements arranged in a main scan direction. The second light emitting element array includes a plurality of light emitting elements arranged in the main scan direction. The optical device focuses a light output from the first light emitting element array and the second light emitting element array on a photoreceptor to form an electrostatic latent image on the photoreceptor. The first light emitting element array and the second light emitting element array are overlapped each other in a sub scan direction in an overlapping section. Interval between the light emitting elements of the first light emitting element array are different from interval between the light emitting elements of the second light emitting element array.Type: ApplicationFiled: November 21, 2011Publication date: August 2, 2012Applicant: FUJI XEROX CO., LTD.Inventor: Ken TSUCHIYA
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Patent number: 8098271Abstract: The exposure device includes: a light output device outputting light for exposing a charged image carrier, and including light-emitting elements caused to emit light or not through a control using a light-emission signal, switch elements provided corresponding to the light-emitting elements, and sequentially turned on to set the light-emitting elements ready to emit light, a transfer-signal generating unit generating a transfer signal for sequentially turning on the switch elements, a light-emission signal supply unit supplying the light-emission signal to the light-emitting elements, and a detection unit causing the transfer-signal generating unit to generate a transfer signal having cycles whose number is larger than that of the light-emitting elements, and detecting a potential of an output region of the light-emission signal supply unit while making an output from the light-emission signal supply unit high impedance; and an optical member focusing light outputted by the light output device onto the imageType: GrantFiled: February 10, 2009Date of Patent: January 17, 2012Assignee: Fuji Xerox Co., Ltd.Inventor: Ken Tsuchiya
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Patent number: 8022974Abstract: An exposure device includes plural light emitting elements that light in turn for exposure, plural driving elements that drive each of the light emitting elements and a time changing member that changes one time period of a switching signal to switch light emitting elements driven by the driving elements among the plurality of light emitting elements in turn from a reference time, depending on an image forming speed, wherein the time changing member changes the one time period from the reference time for some of the light emitting elements during one main scan, and maintains the one time period as the reference time for the remaining light emitting elements.Type: GrantFiled: September 28, 2009Date of Patent: September 20, 2011Assignee: Fuji Xerox Co., Ltd.Inventors: Fumihiko Ogasawara, Osamu Yasui, Michihiro Inoue, Ken Tsuchiya, Michio Taniwaki, Toshio Hisamura
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Publication number: 20100225730Abstract: According to an exposure device includes an exposure section, a lighting drive section, a first temperature detector and a second temperature detector. The exposure section has a plurality of light-emitting elements. The lighting drive section determines light-emitting energies of the respective light-emitting elements and drives to light the respective light-emitting elements in accordance with the determined light-emitting energies. The first temperature detector is provided in the exposure section. The second temperature detector is provided outside the exposure section. The lighting drive section determines the light-emitting energies of the respective light-emitting elements based on a temperature detected by the first temperature detector and a temperature detected by the second temperature detector.Type: ApplicationFiled: November 10, 2009Publication date: September 9, 2010Applicant: FUJI XEROX CO., LTD.Inventors: Michio TANIWAKI, Ken TSUCHIYA, Fumihiko OGASAWARA, Toshio HISAMURA, Osamu YASUI, Michihiro INOUE
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Publication number: 20100214626Abstract: An exposure device includes a plurality of light-emitting elements, a lighting driver, a first storage, a reader, a shading correction unit and a second storage. The lighting driver drives and lights up the light-emitting elements based on image data. The first storage stores light amount unevenness correction values of the respective light-emitting elements. The reader reads the light amount unevenness correction values stored in the first storage. The shading correction unit executes shading correction for the light amount unevenness correction values read by the reader. The second storage stores correction values obtained by having the shading correction unit to execute the shading correction for the light amount unevenness correction values. The lighting driver controls light power of the respective light-emitting elements based on the correction values stored in the second storage.Type: ApplicationFiled: August 27, 2009Publication date: August 26, 2010Applicant: FUJI XEROX CO., LTD.Inventors: Ken TSUCHIYA, Michio TANIWAKI, Fumihiko OGASAWARA, Toshio HISAMURA, Osamu Yasui, Michihiro INOUE
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Publication number: 20100208024Abstract: An exposure device includes plural light emitting elements that light in turn for exposure, plural driving elements that drive each of the light emitting elements and a time changing member that changes one time period of a switching signal to switch light emitting elements driven by the driving elements among the plurality of light emitting elements in turn from a reference time, depending on an image forming speed, wherein the time changing member changes the one time period from the reference time for some of the light emitting elements during one main scan, and maintains the one time period as the reference time for the remaining light emitting elements.Type: ApplicationFiled: September 28, 2009Publication date: August 19, 2010Applicant: FUJI XEROX CO., LTD.Inventors: Fumihiko OGASAWARA, Osamu YASUI, Michihiro INOUE, Ken TSUCHIYA, Michio TANIWAKI, Toshio HISAMURA
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Publication number: 20100182391Abstract: An exposure device includes an exposure section and first and second signal output units. The exposure section has plural light emitting elements. The first signal output unit outputs to the exposure section a first signal for determining timings for starting and ending light emission of the respective light emitting elements. The second signal output unit outputs to the exposure section a second signal for determining as to whether the respective light emitting elements are caused to emit light for respective pixels. If light mission of the respective light emitting elements is stopped with respect to all pixels of one line in a main scanning direction, the first signal does not output to the exposure section for each group of one or plural light emitting elements that operate based on the common first signal.Type: ApplicationFiled: September 21, 2009Publication date: July 22, 2010Applicant: FUJI XEROX CO., LTD.Inventors: Osamu Yasui, Michihiro Inoue, Ken Tsuchiya, Michio Taniwaki, Toshio Hisamura, Fumihiko Ogasawara
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Publication number: 20100060704Abstract: The light-emitting device includes: a light-emitting element array that has plural light-emitting elements arrayed in a line at intervals corresponding to a first resolution; a supply unit that supplies a light-emission signal corresponding to a second resolution, the second resolution being 1/m of the first resolution, where m is an integer not less than 2; a setting unit that divides the plural light-emitting elements into plural sets each including m continuous light-emitting elements in the light-emitting element array, and that sets whether to cause the m continuous light-emitting elements, which are included in each of the plural sets, to emit light on a single set basis by using the light-emission signal supplied from the supply unit; and a correcting unit that corrects the division of the plural light-emitting elements in the light-emitting element array performed by the setting unit, on a single light-emitting element basis.Type: ApplicationFiled: February 10, 2009Publication date: March 11, 2010Applicant: FUJI XEROX CO., LTD.Inventor: Ken Tsuchiya
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Publication number: 20100045763Abstract: The exposure device includes: a light output device outputting light for exposing a charged image carrier, and including light-emitting elements caused to emit light or not through a control using a light-emission signal, switch elements provided corresponding to the light-emitting elements, and sequentially turned on to set the light-emitting elements ready to emit light, a transfer-signal generating unit generating a transfer signal for sequentially turning on the switch elements, a light-emission signal supply unit supplying the light-emission signal to the light-emitting elements, and a detection unit causing the transfer-signal generating unit to generate a transfer signal having cycles whose number is larger than that of the light-emitting elements, and detecting a potential of an output region of the light-emission signal supply unit while making an output from the light-emission signal supply unit high impedance; and an optical member focusing light outputted by the light output device onto the imageType: ApplicationFiled: February 10, 2009Publication date: February 25, 2010Applicant: FUJI XEROX CO., LTD.Inventor: Ken TSUCHIYA