Patents by Inventor Seiichiro Oku

Seiichiro Oku 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).

  • Patent number: 8220891
    Abstract: A liquid droplet jetting head includes: a first terminal to which is inputted a clock signal; a second terminal to which are serially inputted liquid droplet jetting-related input data in synchronization with the clock signal inputted to the first terminal and to which are serially inputted control data after the input data; a third terminal to which is inputted a pulse signal when input of the input data to the second terminal is completed; a first holding unit that holds the data inputted to the second terminal at a timing when the pulse signal is inputted to the third terminal; a delay unit that delays the pulse signal inputted to the third terminal; and a second holding unit that holds at least the control data inputted to the second terminal at a timing when the delay unit delays the pulse signal.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: July 17, 2012
    Assignee: FUJIFILM Corporation
    Inventor: Seiichiro Oku
  • Patent number: 7869654
    Abstract: Objects of the present invention are to facilitate filling out by hand an electronic paper and to realize digitization of contents with which the electronic paper is filled out by hand with a simple structure. A read image is obtained by optically reading a reading-object of the electronic paper. Based on the document information written on the electronic paper and writing-conditions during document writing, which are represented by the document information, a display image of the document in accordance with the read image information is formed. A written image is separated and extracted by converting a density only of pixels among the respective pixels of the read image, whose densities vary in accordance with the document writing and which correspond to a portion, to which ink of a pen for the handwriting is not adhered.
    Type: Grant
    Filed: January 6, 2009
    Date of Patent: January 11, 2011
    Assignee: FUJIFILM Corporation
    Inventors: Yoshiro Yamazaki, Setsuji Tatsumi, Kanji Nagashima, Seiichiro Oku, Toshiya Kojima, Kenichi Kodama, Seiichi Inoue, Naoki Kusunoki
  • Patent number: 7845788
    Abstract: The image forming apparatus includes: a head which ejects ink droplets; an intermediate transfer body having a transfer surface on which a transfer image is formed by means of the ink droplets ejected from the head; a transfer device which performs transfer of the transfer image formed on the transfer surface of the intermediate transfer body to a prescribed transfer-receiving medium; a transfer surface reading device which obtains read image data by reading in the transfer surface of the intermediate transfer body after the transfer; a judgment device which performs judgment of a transfer state of the transfer surface of the intermediate transfer body in accordance with the read image data obtained by the transfer surface reading device; and a transfer condition changing device which changes a transfer condition of the transfer device in accordance with the judgment of the judgment device.
    Type: Grant
    Filed: August 23, 2007
    Date of Patent: December 7, 2010
    Assignee: FujiFilm Corporation
    Inventor: Seiichiro Oku
  • Publication number: 20100225688
    Abstract: A liquid droplet jetting head includes: a first terminal to which is inputted a clock signal; a second terminal to which are serially inputted liquid droplet jetting-related input data in synchronization with the clock signal inputted to the first terminal and to which are serially inputted control data after the input data; a third terminal to which is inputted a pulse signal when input of the input data to the second terminal is completed; a first holding unit that holds the data inputted to the second terminal at a timing when the pulse signal is inputted to the third terminal; a delay unit that delays the pulse signal inputted to the third terminal; and a second holding unit that holds at least the control data inputted to the second terminal at a timing when the delay unit delays the pulse signal.
    Type: Application
    Filed: February 18, 2010
    Publication date: September 9, 2010
    Applicant: FUJIFILM CORPORATION
    Inventor: Seiichiro OKU
  • Patent number: 7712861
    Abstract: The image forming apparatus includes: an image forming device which has a plurality of nozzles performing droplet ejection of ink to deposit droplets of the ink to form an image onto a prescribed medium; an image reading device which acquires read image data by reading in the image on the medium; a deviation amount calculation device which, for each of the nozzles, calculates a current deviation amount that is a deviation amount in the droplet ejection with respect to a prescribed central value, by finding a weighted average of an initial deviation amount and past N deviation amounts nearest to a current time calculated for the nozzle according to past read image data; and a droplet ejection correction device which corrects the droplet ejection of each of the nozzles according to the current deviation amount of the nozzle calculated by the deviation amount calculation device.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: May 11, 2010
    Assignee: Fujifilm Corporation
    Inventor: Seiichiro Oku
  • Patent number: 7651202
    Abstract: The liquid ejection head comprises: a plurality of pressure chambers connected to a plurality of nozzles from which liquid is ejected, the pressure chambers being arranged in a two-dimensional configuration; a diaphragm which constitutes a wall of each of the pressure chambers, the wall being located opposite to the nozzles; a plurality of piezoelectric elements disposed at positions corresponding to the pressure chambers on a surface of the diaphragm which is on an opposite side of the diaphragm from the pressure chambers, the piezoelectric elements causing portions of the diaphragm corresponding to the pressure chambers to deform; an intermediate plate which is located on a piezoelectric element side of the diaphragm where the piezoelectric elements are disposed and which forms a space around a periphery of each of the piezoelectric elements; electrical wires for electrically connecting drive circuits which drives the piezoelectric elements with drive electrodes of the piezoelectric elements, the electrical
    Type: Grant
    Filed: July 20, 2006
    Date of Patent: January 26, 2010
    Assignee: FUJIFILM Corporation
    Inventors: Yasuhiko Kachi, Seiichiro Oku, Toshiya Kojima
  • Patent number: 7636995
    Abstract: The method of manufacturing a liquid ejection head includes the steps of: forming piezoelectric elements on a diaphragm; stacking an intermediate plate which includes recess sections for covering the piezoelectric elements and drive wires connected to the piezoelectric elements, on the diaphragm; connecting an integrated circuit to the drive wires; forming an actuator function unit by electrically and mechanically bonding the diaphragm, the piezoelectric elements, the drive wires, the intermediate plate and the integrated circuit, in such a manner that the piezoelectric elements are electrically driven via the integrated circuit; measuring displacement of the diaphragm by operating the integrated circuit; and bonding a flow path forming member to the actuator function unit after the step of measuring the displacement of the diaphragm, the flow path forming member being provided for forming pressure chambers connected to nozzles and forming a common liquid chamber for storing liquid supplied to the pressure ch
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: December 29, 2009
    Assignee: Fujifilm Corporation
    Inventor: Seiichiro Oku
  • Patent number: 7618129
    Abstract: The liquid ejection head includes: a nozzle plate which has a plurality of ejection apertures through which a liquid is ejected; a plurality of pressure chambers which are connected respectively to the ejection apertures; a plurality of liquid supply flow channels which supply the liquid respectively to the pressure chambers; a common liquid chamber which supplies the liquid to the liquid supply flow channels; a plurality of pressure generating devices which respectively deform the pressure chambers; and a plurality of electrical wires which supply drive signals to the pressure chamber generating devices, wherein the electrical wires are provided so as to pass through the common liquid chamber.
    Type: Grant
    Filed: September 14, 2005
    Date of Patent: November 17, 2009
    Assignee: Fujifilm Corporation
    Inventors: Kenichi Kodama, Toshiya Kojima, Kazuo Sanada, Tsuyoshi Mita, Seiichiro Oku, Kanji Nagashima
  • Publication number: 20090231602
    Abstract: An image processing apparatus that includes a storage component, sending components, receiving components, driving components, a detecting component and a sending control component is provided. The driving components are provided to correspond to each of the receiving components and each of the image forming components. Each driving component drives the corresponding image forming component based on divided image information received by the receiving component. The detecting component detects displacement between a position of recording medium and the areas formed by the image forming components. The sending control component controls so that the divided image information of an amount of information defined in accordance to the displacement detected by the detecting component is sent from the driving component corresponding to the image forming component of one of adjacent areas to the driving component corresponding to the other image forming component.
    Type: Application
    Filed: March 4, 2009
    Publication date: September 17, 2009
    Applicant: FUJIFILM CORPORATION
    Inventor: Seiichiro Oku
  • Publication number: 20090231614
    Abstract: An image processing apparatus includes a timing signal generation unit, a delay time information output unit, and a drive unit. The timing signal generation unit generates a timing signal showing timing at which an image forming unit is driven to form an image on a recording medium that is transported by a transport unit. The delay time information output unit outputs delay time information showing a delay time from the time at which the timing signal is generated to the time at which the image forming unit is driven with delay so that positions of pixels formed by the image forming unit are offset within the range of one pixel with respect to a transport direction. The drive unit drives the image forming unit after the delay time shown by the delay time information.
    Type: Application
    Filed: March 11, 2009
    Publication date: September 17, 2009
    Applicant: FUJIFILM Corporation
    Inventor: Seiichiro Oku
  • Publication number: 20090152024
    Abstract: Objects of the present invention are to facilitate filling out by hand an electronic paper and to realize digitization of contents with which the electronic paper is filled out by hand with a simple structure. A read image is obtained by optically reading a reading-object of the electronic paper. Based on the document information written on the electronic paper and writing-conditions during document writing, which are represented by the document information, a display image of the document in accordance with the read image information is formed. A written image is separated and extracted by converting a density only of pixels among the respective pixels of the read image, whose densities vary in accordance with the document writing and which correspond to a portion, to which ink of a pen for the handwriting is not adhered.
    Type: Application
    Filed: January 6, 2009
    Publication date: June 18, 2009
    Inventors: Yoshiro Yamazaki, Setsuji Tatsumi, Kanji Nagashima, Seiichiro Oku, Toshiya Kojima, Kenichi Kodama, Seiichi Inoue, Naoki Kusunoki
  • Patent number: 7540580
    Abstract: The liquid ejection apparatus comprises: an ejection head which has an ejection element, the ejection element including an ejection aperture through which a droplet of liquid is ejected onto an ejection receiving medium, a pressure chamber which is connected to the ejection aperture and accommodates the liquid to be ejected from the ejection aperture, and a pressurizing device which applies an ejection pressure to the liquid accommodated in the pressure chamber; a drive signal application device which applies to the pressurizing device a meniscus vibration drive signal for suppressing increase in viscosity of the liquid in vicinity of the ejection aperture by causing a meniscus surface of the liquid to vibrate and to eject no droplet from the ejection aperture; a pressure determination device which determines pressure in the pressure chamber when the meniscus surface is vibrated by the meniscus vibration drive signal; and a judgment device which judges an abnormal state of the ejection element from pressure i
    Type: Grant
    Filed: July 6, 2005
    Date of Patent: June 2, 2009
    Assignee: Fujifilm Corporation
    Inventor: Seiichiro Oku
  • Patent number: 7499201
    Abstract: An object of the invention is to obtain a high-quality image by reading an image of an electronic paper with high accuracy. When optically copying the electronic paper, a controller reads out display characteristics such as a reading resolution and a reading light quantity from a display characteristic memory of the electronic paper. The controller performs optical copying processing after setting optimal conditions on the basis of the display characteristics which have been read out from the display characteristic memory.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: March 3, 2009
    Assignee: FUJIFILM Corporation
    Inventors: Kenichi Kodama, Setsuji Tatsumi, Kanji Nagashima, Seiichiro Oku, Yoshiro Yamazaki, Toshiya Kojima, Seiichi Inoue, Naoki Kusunoki
  • Patent number: 7495633
    Abstract: A holding stand is constituted by a carrying case for holding sheets of electronic paper and a base for uprightly supporting the carrying case that is substantially vertical. From the holding stand, two page fields, each expressing the number of pages of sheets of electronic paper to be displayed and position page field expressing a current page position of electronic paper and incremented on each of the sheets, are added to image data, and the image data is output to the sheets of electronic paper. In each sheets, when the two page fields coincide with each other in comparison between the two page fields, an image based on the image data is displayed in a display region. When the two page fields are different from each other, the position page field is incremented by one, and the position page field is transmitted to the next electronic paper.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: February 24, 2009
    Assignee: FUJIFILM Corporation
    Inventors: Seiichiro Oku, Setsuji Tatsumi, Kanji Nagashima, Yoshiro Yamazaki, Toshiya Kojima, Kenichi Kodama, Naoki Kusunoki, Seiichi Inoue
  • Patent number: 7492945
    Abstract: Objects of the present invention are to facilitate filling out by hand an electronic paper and to realize digitization of contents with which the electronic paper is filled out by hand with a simple structure. A read image is obtained by optically reading a reading-object of the electronic paper. Based on the document information written on the electronic paper and writing-conditions during document writing, which are represented by the document information, a display image of the document in accordance with the read image information is formed. A written image is separated and extracted by converting a density only of pixels among the respective pixels of the read image, whose densities vary in accordance with the document writing and which correspond to a portion, to which ink of a pen for the handwriting is not adhered.
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: February 17, 2009
    Assignee: FUJIFILM Corporation
    Inventors: Yoshiro Yamazaki, Setsuji Tatsumi, Kanji Nagashima, Seiichiro Oku, Toshiya Kojima, Kenichi Kodama, Seiichi Inoue, Naoki Kusunoki
  • Patent number: 7475960
    Abstract: The liquid ejection apparatus includes: ejection head which includes: a nozzle through which a droplet of liquid is ejected onto an ejection receiving medium; a pressure chamber which accommodates the liquid to be ejected from the nozzle; and a piezoelectric element which is provided at the pressure chamber and applies an ejection force to the liquid inside the pressure chamber; a pressure sensor which is provided at the pressure chamber and generates a determination signal corresponding to pressure in the pressure chamber; an integration device which integrates the determination signal obtained by the pressure sensor for a prescribed integration time period; and an ejection abnormality judgment device which judges whether or not an ejection abnormality occurs in the nozzle, according to a comparison result of comparing an integration result obtained from the integration device with a previously established threshold value.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: January 13, 2009
    Assignee: Fujifilm Corporation
    Inventor: Seiichiro Oku
  • Patent number: 7416268
    Abstract: The drive circuit drives a plurality of piezoelectric elements connected in a matrix connection, each of the piezoelectric elements having a first electrode and a second electrode, and the drive circuit comprises: a drive signal generating device which generates a drive signal with voltage of a single polarity to be applied to the piezoelectric elements; a drive controlling device which controls a timing for applying the drive signal to each of the piezoelectric elements; and a plurality of switching devices which apply the drive signal to the piezoelectric elements according to control of the drive controlling device, a number of the plurality of switching devices being smaller than a number of the plurality of piezoelectric elements, wherein the drive controlling device sequentially applies the drive signal with voltage of the single polarity to the first electrode and the second electrode in succession.
    Type: Grant
    Filed: July 26, 2005
    Date of Patent: August 26, 2008
    Assignee: Fujifilm Corporation
    Inventor: Seiichiro Oku
  • Publication number: 20080180470
    Abstract: An image forming apparatus includes: a rearrangement device having a configuration whereby the print data is rearranged in such a manner that data of pixels corresponding to mutually adjacent recording elements which are aligned on a straight line in the second direction in the recording head is located within a same word or within adjacent words; and an image buffer memory having at the least a storage capacity of storing the print data rearranged by the rearrangement device for an image region corresponding to a surface area occupied by a plurality of recording elements arranged in a two-dimensional matrix configuration in a recording head.
    Type: Application
    Filed: January 30, 2008
    Publication date: July 31, 2008
    Inventor: Seiichiro OKU
  • Publication number: 20080050140
    Abstract: The image forming apparatus includes: a head which ejects ink droplets; an intermediate transfer body having a transfer surface on which a transfer image is formed by means of the ink droplets ejected from the head; a transfer device which performs transfer of the transfer image formed on the transfer surface of the intermediate transfer body to a prescribed transfer-receiving medium; a transfer surface reading device which obtains read image data by reading in the transfer surface of the intermediate transfer body after the transfer; a judgment device which performs judgment of a transfer state of the transfer surface of the intermediate transfer body in accordance with the read image data obtained by the transfer surface reading device; and a transfer condition changing device which changes a transfer condition of the transfer device in accordance with the judgment of the judgment device.
    Type: Application
    Filed: August 23, 2007
    Publication date: February 28, 2008
    Inventor: Seiichiro Oku
  • Publication number: 20070229559
    Abstract: The image forming apparatus includes: an image forming device which has a plurality of nozzles performing droplet ejection of ink to deposit droplets of the ink to form an image onto a prescribed medium; an image reading device which acquires read image data by reading in the image on the medium; a deviation amount calculation device which, for each of the nozzles, calculates a current deviation amount that is a deviation amount in the droplet ejection with respect to a prescribed central value, by finding a weighted average of an initial deviation amount and past N deviation amounts nearest to a current time calculated for the nozzle according to past read image data; and a droplet ejection correction device which corrects the droplet ejection of each of the nozzles according to the current deviation amount of the nozzle calculated by the deviation amount calculation device.
    Type: Application
    Filed: March 30, 2007
    Publication date: October 4, 2007
    Inventor: Seiichiro Oku