Patents by Inventor Kenichi Kawauchi
Kenichi Kawauchi 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: 9554015Abstract: Provided is an image compression apparatus including a dividing unit that divides a bit width pixel value set in advance that indicates compressed image information into an invalid bit region and a valid bit region other than the invalid bit region that are replaced with a fixed value determined in advance, an image information conversion unit that makes a value of the valid bit region be a value of a bit corresponding to the pixel value and makes a value of the invalid bit region be the fixed value determined in advance and converts the compressed image information to conversion image information, and a compression unit that compresses the conversion image information.Type: GrantFiled: September 15, 2015Date of Patent: January 24, 2017Assignee: FUJI XEROX CO., LTDInventor: Kenichi Kawauchi
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Publication number: 20160277636Abstract: Provided is an image compression apparatus including a dividing unit that divides a bit width pixel value set in advance that indicates compressed image information into an invalid bit region and a valid bit region other than the invalid bit region that are replaced with a fixed value determined in advance, an image information conversion unit that makes a value of the valid bit region be a value of a bit corresponding to the pixel value and makes a value of the invalid bit region be the fixed value determined in advance and converts the compressed image information to conversion image information, and a compression unit that compresses the conversion image information.Type: ApplicationFiled: September 15, 2015Publication date: September 22, 2016Inventor: Kenichi KAWAUCHI
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Patent number: 8305634Abstract: In an image processing device, the memory stores conversion characteristic information corresponding to respective recording portions of an image recording device that records an image at a recording medium while moving a recording unit, which is provided with a plurality of the recording portions arrayed in a first direction, relative to the recording medium in a second direction that is perpendicular to the first direction, the conversion characteristic information expressing conversion characteristics for converting image data in units of one pixel. The first processing unit performs conversion processing along the first direction, continuously converting respective sets of pixel data aligned in the second direction, using conversion characteristic information that corresponds to the recording portions. The second processing unit performs image processing in the order of processing by the first processing unit.Type: GrantFiled: December 1, 2008Date of Patent: November 6, 2012Assignee: Fuji Xerox Co., Ltd.Inventors: Kota Nakayama, Akira Mihara, Kenichi Kawauchi
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Patent number: 7918521Abstract: In a droplet ejecting apparatus, a detection pattern output unit drives a droplet ejecting head based on a pulse signal and image information of a detection pattern comprising plural unit patterns so as to form an image of the detection pattern on a recording medium. A correction information generating unit derives a distance between adjacent unit patterns based on the image of a read detection pattern, compares the distance with a distance according to the conveyance velocity of the recording medium by a moving unit, and generates correction information so as to enlarge the pulse width when the derived distance is shorter, and to reduce the pulse width when the derived distance is longer.Type: GrantFiled: June 4, 2007Date of Patent: April 5, 2011Assignee: Fuji Xerox Co., Ltd.Inventors: Masami Furuya, Kenichi Kawauchi, Susumu Kibayashi
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Patent number: 7695084Abstract: The present invention provides a waveform data-processing device. This waveform data-processing device is equipped with a generation component and a sequencing component. The generation component, on the basis of each of a plurality of waveforms which are specified by respective durations and amplitudes, generates a plurality of waveform data sets. Each waveform data set is structured by partial waveform data representing, for each of nodes which are points in the waveform at which amplitude alters, a period until a next node in time and an amplitude change condition. The sequencing component sequences the partial waveform data of the respective nodes for each of the plurality of waveform data sets that have been generated by the generation component. In this waveform data-processing device, the sequencing component sequences partial waveform data of nodes with times which are the same between the waveform data sets to sequence positions which are the same.Type: GrantFiled: February 4, 2006Date of Patent: April 13, 2010Assignee: Fuji Xerox Co., Ltd.Inventor: Kenichi Kawauchi
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Publication number: 20090290183Abstract: In an image processing device, the memory stores conversion characteristic information corresponding to respective recording portions of an image recording device that records an image at a recording medium while moving a recording unit, which is provided with a plurality of the recording portions arrayed in a first direction, relative to the recording medium in a second direction that is perpendicular to the first direction, the conversion characteristic information expressing conversion characteristics for converting image data in units of one pixel. The first processing unit performs conversion processing along the first direction, continuously converting respective sets of pixel data aligned in the second direction, using conversion characteristic information that corresponds to the recording portions. The second processing unit performs image processing in the order of processing by the first processing unit.Type: ApplicationFiled: December 1, 2008Publication date: November 26, 2009Applicant: FUJI XEROX CO., LTD.Inventors: Kota Nakayama, Akira Mihara, Kenichi Kawauchi
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Patent number: 7441884Abstract: A recording apparatus includes a transport unit that conveys a recording medium and a recording head unit that records an image on the recording medium conveyed by the transport unit. The transport unit includes a straight transport unit that straightly conveys the recording medium. The transport unit also includes a looped transport unit that branches and turns from the straight transport unit and returns the recording medium to the straight transport unit. A first recording region is disposed at the looped transport unit and a second recording region is disposed at the straight transport unit.Type: GrantFiled: February 22, 2005Date of Patent: October 28, 2008Assignee: Fuji Xerox Co., Ltd.Inventors: Kenichi Kawauchi, Akira Mihara, Satoshi Mohri
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Publication number: 20080100655Abstract: In a droplet ejecting apparatus, a detection pattern output unit drives a droplet ejecting head based on a pulse signal and image information of a detection pattern comprising plural unit patterns so as to form an image of the detection pattern on a recording medium. A correction information generating unit derives a distance between adjacent unit patterns based on the image of a read detection pattern, compares the distance with a distance according to the conveyance velocity of the recording medium by a moving unit, and generates correction information so as to enlarge the pulse width when the derived distance is shorter, and to reduce the pulse width when the derived distance is longer.Type: ApplicationFiled: June 4, 2007Publication date: May 1, 2008Inventors: Masami Furuya, Kenichi Kawauchi, Susumu Kibayashi
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Patent number: 7216948Abstract: An image forming apparatus has: a recording head having plural unit recording heads divided in a direction orthogonal to a moving direction of a recording medium; a detecting section detecting at least offset of an image recorded by a vicinity of an end portion, in the direction orthogonal to the moving direction of the recording medium, of the plural unit recording heads; and a correcting section correcting recording offset of the recording head on the basis of results of detection of the detecting section.Type: GrantFiled: July 30, 2004Date of Patent: May 15, 2007Assignee: Fuji Xerox Co., Ltd.Inventors: Yoshiki Matsuzaki, Kozo Tagawa, Ryo Ando, Takeshi Kato, Tsutomu Udaka, Toshiyuki Kazama, Osamu Goto, Kenichi Kawauchi
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Publication number: 20070052743Abstract: The present invention provides a waveform data-processing device. This waveform data-processing device is equipped with a generation component and a sequencing component. The generation component, on the basis of each of a plurality of waveforms which are specified by respective durations and amplitudes, generates a plurality of waveform data sets. Each waveform data set is structured by partial waveform data representing, for each of nodes which are points in the waveform at which amplitude alters, a period until a next node in time and an amplitude change condition. The sequencing component sequences the partial waveform data of the respective nodes for each of the plurality of waveform data sets that have been generated by the generation component. In this waveform data-processing device, the sequencing component sequences partial waveform data of nodes with times which are the same between the waveform data sets to sequence positions which are the same.Type: ApplicationFiled: February 4, 2006Publication date: March 8, 2007Inventor: Kenichi Kawauchi
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Patent number: 7114792Abstract: Ink droplets placement errors of a recording apparatus is to be corrected with high accuracy. Ink droplets placement errors in a subsidiary scanning direction of recording head units of a recording head array are obtained based on a result identified by reading a test chart for adjusting head alignment for detecting the errors, and it is then determined as to whether or not the errors identified is in a prescribed tolerance level (i.e., whether or not the printing result is good). In the case where it is judged that the printing result is not good, adjustment of alignment is carried out based on the errors identified. That is, the ink discharging timing of the recording head units is controlled per the period of the printing pulses, and the ink discharging timing of the recording head units is then controlled per the period of the controlling pulses.Type: GrantFiled: September 15, 2003Date of Patent: October 3, 2006Assignee: Fuji Xerox Co., Ltd.Inventors: Kenichi Kawauchi, Akira Mihara
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Patent number: 7114793Abstract: A recording apparatus contains a recording head having a liquid droplet ejecting surface and ejecting a liquid droplet to a recording medium, a maintenance device disposed at a position opposite to the liquid droplet ejecting surface of the recording head, and a conveying unit which conveys the recording medium between the recording head and the maintenance device. The maintenance device has a liquid housing unit which houses the liquid droplet from the recording head, and a cleaning unit which cleans the liquid droplet ejecting surface of the recording head.Type: GrantFiled: February 17, 2004Date of Patent: October 3, 2006Assignee: Fuji Xerox Co., Ltd.Inventors: Nobuhiro Katsuta, Hiroaki Satoh, Yoshihira Rai, Akira Mihara, Kenichi Kawauchi, Naoki Morita, Hiroshi Ikeda
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Patent number: 7101037Abstract: An image recording device includes plural retaining units each of which retains a recording medium on circumference thereof, a printing head that forms an image on the recording medium, a loop unit that retains the plural retaining units on a closed path, a first driving unit that drives each of the plural retaining units, and a second driving unit that conveys the retaining units on the loop unit, wherein when the first driving unit drives one of the plural retaining units to form an image on a first recording medium retained on circumference thereof, the first driving unit drives another one of the retaining units to mount a second recording medium on circumference thereof, and the second driving unit conveys one of the retaining units to a recording medium peeling position after completing image formation, and another one of the retaining units to a printing position.Type: GrantFiled: February 28, 2005Date of Patent: September 5, 2006Assignee: Fuji Xerox Co., Ltd.Inventors: Akira Mihara, Kenichi Kawauchi, Satoshi Mohri
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Patent number: 7090419Abstract: A recording device for recording an image on a recording medium, the recording device comprising: a recording head having a liquid drop discharging surface for discharging liquid drops toward a recording medium; a liquid receptacle disposed at a position opposing a liquid drop discharging surface of the recording head, and able to accommodate the liquid drops; and a conveying device for conveying the recording medium between the recording head and the liquid receptacle, by a non-electrostatic attraction method.Type: GrantFiled: February 17, 2004Date of Patent: August 15, 2006Assignee: Fuji Xerox Co., Ltd.Inventors: Hiroaki Satoh, Nobuhiro Katsuta, Yoshihira Rai, Akira Mihara, Kenichi Kawauchi, Hiroshi Ikeda, Naoki Morita
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Publication number: 20060050125Abstract: An image recording device includes plural retaining units each of which retains a recording medium on circumference thereof, a printing head that forms an image on the recording medium, a loop unit that retains the plural retaining units on a closed path, a first driving unit that drives each of the plural retaining units, and a second driving unit that conveys the retaining units on the loop unit, wherein when the first driving unit drives one of the plural retaining units to form an image on a first recording medium retained on circumference thereof, the first driving unit drives another one of the retaining units to mount a second recording medium on circumference thereof, and the second driving unit conveys one of the retaining units to a recording medium peeling position after completing image formation, and another one of the retaining units to a printing position.Type: ApplicationFiled: February 28, 2005Publication date: March 9, 2006Inventors: Akira Mihara, Kenichi Kawauchi, Satoshi Mohri
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Publication number: 20060028524Abstract: A recording apparatus includes a transport unit that conveys a recording medium and a recording head unit that records an image on the recording medium conveyed by the transport unit. The transport unit includes a straight transport unit that straightly conveys the recording medium. The transport unit also includes a looped transport unit that branches and turns from the straight transport unit and returns the recording medium to the straight transport unit. A first recording region is disposed at the looped transport unit and a second recording region is disposed at the straight transport unit.Type: ApplicationFiled: February 22, 2005Publication date: February 9, 2006Inventors: Kenichi Kawauchi, Akira Mihara, Satoshi Mohri
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Patent number: 6926385Abstract: A recording apparatus enabling printing with high image quality is to be provided. In a recording apparatus exerting recordation having a non-scanning recording head corresponding to the total width of the paper, a pressing member and a supporting member are disposed among plural recording head units, which are arranged in the width direction of the paper with a prescribed interval, and thus the paper continuously conveyed is pressed with the pressing member onto the supporting member, so as to uniformize the distance between the paper and the nozzle surface at the printing position. As a result, printing can be attained with high image quality on the paper continuously conveyed.Type: GrantFiled: September 15, 2003Date of Patent: August 9, 2005Assignee: Fuji Xerox Co., Ltd.Inventors: Yoshihira Rai, Hiroaki Satoh, Nobuhiro Katsuta, Kenichi Kawauchi, Akira Mihara, Hiroshi Ikeda, Naoki Morita
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Publication number: 20050062784Abstract: An image forming apparatus has: a recording head having plural unit recording heads divided in a direction orthogonal to a moving direction of a recording medium; a detecting section detecting at least offset of an image recorded by a vicinity of an end portion, in the direction orthogonal to the moving direction of the recording medium, of the plural unit recording heads; and a correcting section correcting recording offset of the recording head on the basis of results of detection of the detecting section.Type: ApplicationFiled: July 30, 2004Publication date: March 24, 2005Applicant: FUJI XEROX CO., LTD.Inventors: Yoshiki Matsuzaki, Kozo Tagawa, Ryo Ando, Takeshi Kato, Tsutomu Udaka, Toshiyuki Kazama, Osamu Goto, Kenichi Kawauchi
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Publication number: 20040227785Abstract: A recording apparatus contains a recording head having a liquid droplet ejecting surface and ejecting a liquid droplet to a recording medium, a maintenance device disposed at a position opposite to the liquid droplet ejecting surface of the recording head, and a conveying unit which conveys the recording medium between the recording head and the maintenance device. The maintenance device has a liquid housing unit which houses the liquid droplet from the recording head, and a cleaning unit which cleans the liquid droplet ejecting surface of the recording head.Type: ApplicationFiled: February 17, 2004Publication date: November 18, 2004Applicant: FUJI XEROX CO., LTD.Inventors: Nobuhiro Katsuta, Hiroaki Satoh, Yoshihira Rai, Akira Mihara, Kenichi Kawauchi, Naoki Morita, Hiroshi Ikeda
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Publication number: 20040179055Abstract: Ink droplets placement errors of a recording apparatus is to be corrected with high accuracy. Ink droplets placement errors in a subsidiary scanning direction of recording head units of a recording head array are obtained based on a result identified by reading a test chart for adjusting head alignment for detecting the errors, and it is then determined as to whether or not the errors identified is in a prescribed tolerance level (i.e., whether or not the printing result is good). In the case where it is judged that the printing result is not good, adjustment of alignment is carried out based on the errors identified. That is, the ink discharging timing of the recording head units is controlled per the period of the printing pulses, and the ink discharging timing of the recording head units is then controlled per the period of the controlling pulses.Type: ApplicationFiled: September 15, 2003Publication date: September 16, 2004Applicant: FUJI XEROX CO., LTD.Inventors: Kenichi Kawauchi, Akira Mihara