Patents by Inventor Osamu Iwasaki

Osamu Iwasaki 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).

  • SPINDLE DEVICE, MACHINING CENTER INCLUDING THE SPINDLE DEVICE, AND METHOD FOR ASSEMBLING THE SPINDLE DEVICE
    Publication number: 20100028094
    Abstract: A spindle device 20 includes: a bracket 21 swingably mounted on a support arm 9 and having a tubular portion 22 substantially perpendicular to the swing axis of the bracket 21; and, a spindle 30 including a rotation portion 31 capable of mounting a tool onto the leading end thereof, a housing 32 insertably and removably mounted on the tubular portion 22 of the bracket 21 and having a mounting surface 35a disposed opposed to the surface of the bracket 21, and bearings 50 and 51 respectively interposed between the rotation portion 31 and housing 32 for supporting the rotation portion 31 rotatable relative to the housing 32. In the mounting surface 35a of the housing 32, there are formed flow passage openings 80˜86 for fluid which are supplied to the spindle 30.
    Type: Application
    Filed: October 31, 2007
    Publication date: February 4, 2010
    Applicant: NSK LTD.
    Inventors: Hiroki Yoneyama, Yoshifumi Inacaki, Osamu Iwasaki
  • PLANAR LIGHTING DEVICE
    Publication number: 20100020568
    Abstract: It is an object to provide a planar lighting device that is a thin and light in weight, that emits light without luminous unevenness and that is capable of achieving increased dimensions.
    Type: Application
    Filed: January 21, 2008
    Publication date: January 28, 2010
    Inventors: Osamu Iwasaki, Toshiaki Endo
  • Liquid applying apparatus and ink jet printing apparatus
    Patent number: 7650850
    Abstract: The present invention provides a liquid applying apparatus and an ink jet printing apparatus which, when supplying a liquid to and/or collecting the liquid from a liquid holding member holding an application liquid in a space formed by a roller being abutted, can suppress the leakage of the liquid from the liquid holding member. A pump is provided in a collecting path between a storage tank and a liquid collecting port formed in the liquid holding member that is liquid-tight. The pump is driven to circulate the application liquid between the storage tank and the liquid holding member.
    Type: Grant
    Filed: February 8, 2005
    Date of Patent: January 26, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Osamu Iwasaki, Naoji Otsuka, Yoshinori Nakagawa
  • LIQUID APPLICATION DEVICE AND INK JET RECORDING APPARATUS
    Publication number: 20100013876
    Abstract: The present invention provides an inkjet recording apparatus and a recording apparatus capable of reducing wear of a roller for application, even if liquid (for example, application liquid) is insufficient in a case where liquid is applied to recording media. In an embodiment of the present invention, in a case where it is determined that the application liquid is sufficient in a storage tank, the application liquid is filled in a liquid retention space, the application liquid is applied to the recording medium, and thus recording is performed. In a case where it is determined that the liquid application is insufficient in the storage tank, recording with application is prohibited.
    Type: Application
    Filed: September 29, 2009
    Publication date: January 21, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Atsuhiko MASUYAMA, Osamu IWASAKI, Yoshinori NAKAGAWA, Naomi OSHIO
  • Planar lighting device
    Patent number: 7645048
    Abstract: The planar lighting device includes a light source having at least one LED chip for emitting blue light through a light emission face, a transparent light guide plate having at least one light entrance plane through which light emitted by the light source is admitted and a light exit plane through which the light admitted through the at least one light entrance plane is emitted as planar light, and a fluorescent member disposed between the light emission face and each of the at least one light entrance plane and having a fluorescent substance coated area for emitting white light by converting the blue light from the light source into the white light and blue light passing areas through which the blue light from the light source is allowed to pass as the blue light.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: January 12, 2010
    Assignee: FUJIFILM Corporation
    Inventors: Osamu Iwasaki, Takamitsu Okumura, Toshiaki Endo
  • Data processing apparatus, data processing method, ink jet printing apparatus, and ink jet printing method
    Patent number: 7641309
    Abstract: A present invention reduces the generation of periodic uneven print density in the image in a main scanning direction. The present invention focuses attention on a fact that, when a printing head including a plurality of nozzle arrays for ejecting different inks is used to print an image and when the same pixel is printed by a combination of nozzle arrays in which an interval in the main scanning direction is relatively short, the displacement of ink impact positions is smaller when compared to a case where the same pixel is printed by a combination of nozzle arrays in which an interval in the main scanning direction is relatively long. Thus, a dot arrangement pattern allocated to the pixel data is selected so that the same pixel is printed by a combination of nozzle arrays in which an interval in the main scanning direction is relatively short.
    Type: Grant
    Filed: August 16, 2005
    Date of Patent: January 5, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Minoru Teshigawara, Naoji Otsuka, Kiichiro Takahashi, Osamu Iwasaki, Tetsuya Edamura, Yoshinori Nakagawa, Satoshi Seki, Naomi Oshio
  • PLANAR ILLUMINATION DEVICE
    Publication number: 20090303744
    Abstract: It is an object to provide a planar illumination device that is thin and light weight, and can emit uniform illumination light with little brightness unevenness and can be enlarged in size.
    Type: Application
    Filed: July 30, 2007
    Publication date: December 10, 2009
    Applicant: FUJIFILM CORPORATION
    Inventor: Osamu Iwasaki
  • Ink jet printing apparatus
    Patent number: 7621621
    Abstract: In an ink jet printing apparatus using many types of inks to execute bidirectional printing, if ejection opening rows for yellow, magenta, and cyan inks are symmetrically arranged, ejection opening rows for a black ink are arranged adjacent to the most inside ejection opening rows for the yellow ink. Thus, a difference in color between forward scanning and backward scanning is determined by a difference in coloring between the black ink and the yellow ink. In this case, a possible color drift attributed to bidirectional printing can be suppressed by selecting the inks so that the difference in coloring between the black ink and the yellow ink is smaller than that between the black ink and the other color inks.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: November 24, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Osamu Iwasaki, Kiichiro Takahashi, Hitoshi Nishikori, Naoji Otsuka, Minoru Teshigawara, Tetsuya Edamura, Yoshinori Nakagawa, Satoshi Seki
  • Liquid application device and ink jet recording apparatus
    Patent number: 7614714
    Abstract: The present invention provides an inkjet recording apparatus and a recording apparatus capable of reducing wear of a roller for application, even if liquid (for example, application liquid) is insufficient in a case where liquid is applied to recording media. In an embodiment of the present invention, in a case where it is determined that the application liquid is sufficient in a storage tank, the application liquid is filled in a liquid retention space, the application liquid is applied to the recording medium, and thus recording is performed. In a case where it is determined that the liquid application is insufficient in the storage tank, recording with application is prohibited.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: November 10, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Atsuhiko Masuyama, Osamu Iwasaki, Yoshinori Nakagawa, Naomi Oshio
  • Light guide member, planar lighting device using the same, and rod-type lighting device
    Patent number: 7614775
    Abstract: A transparent light guide member comprising a first light guide unit in the form of a transparent plate having a rectangular light emitting plane and a parallel groove formed on a rear surface located opposite from the rectangular light emitting plane and parallel to one side of the rectangular light emitting plane; and a second light guide unit, which is transparent, having a columnar external shape to be accommodated in the parallel groove and containing light-scattering particles. Let ? be the scattering cross section of the particles, LG the length of the light guide unit 32 in the direction in which light propagates, Np the particle density, and KC a compensation coefficient, then a value ?·LG·Np·KC the light guide member assumes is not smaller than 1.1 and not greater than 8.2, and the compensation coefficient KC is not smaller than 0.005 and not greater than 0.1.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: November 10, 2009
    Assignee: Fujfilm Corporation
    Inventor: Osamu Iwasaki
  • Liquid application device and inkjet recording apparatus
    Patent number: 7604344
    Abstract: The present invention provides a liquid application device and an inkjet recording apparatus, which are capable of supplying liquid to a liquid room with the power consumption and/or the noise which are reduced. A pump is driven to fill a liquid retention space S with an application liquid. When the filling has been completed, the pump is stopped. Subsequently, the application liquid is applied to an application medium which has been transferred. At this time, a count in a RAM is increased. Thereafter, the determination as to whether or not the application can be carried out is made on the basis of the count and the prescribed application-performable number of sheets stored in a ROM. If it is determined that the application cannot be carried out, the filling of the application liquid is performed. If it is determined that the application can be carried out, next application is performed.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: October 20, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Satoshi Seki, Naoji Otsuka, Kiichiro Takahashi, Osamu Iwasaki, Minoru Teshigawara, Tetsuya Edamura, Yoshinori Nakagawa, Naomi Oshio
  • Printing apparatus and method for setting adjustment values for inks having low detection sensitivity
    Patent number: 7600848
    Abstract: If print agents used are detected by an optical sensor at different sensitivities, the present invention enables the easy setting of adjustment values for print positions resulting from these print agents. To accomplish this object, for example, the present invention substitutes and sets adjustment values for print positions resulting from cyan, light cyan, or black ink, corresponding to a high detection sensitivity, for adjustment values for print positions resulting from a light magenta, yellow, or magenta ink, corresponding to a low detection sensitivity.
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: October 13, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Minoru Teshigawara, Kiichiro Takahashi, Osamu Iwasaki, Satoshi Seki, Naoji Otsuka
  • Liquid application device and inkjet recording apparatus
    Patent number: 7591545
    Abstract: In a liquid application device and an inkjet recording apparatus, even if the number of liquid storage units is increased, the number of parts can be reduced, and cost reduction and miniaturization can be realized. The liquid application device includes a buffer tank storing application liquid to be supplied to a space-creating base. Additionally, the device includes an exchange tank storing application liquid to be refilled in the buffer tank. Moreover, the device includes first and second channels linking the buffer tank and the space-creating base, a pump arranged in the second channel, and a third channel linking a T-shaped channel and an exchange tank. Furthermore, the device includes a first valve which switches shutoff and link between first and second tubes, and a third valve which switches shutoff and link between third and fourth tubes.
    Type: Grant
    Filed: August 9, 2006
    Date of Patent: September 22, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Osamu Iwasaki, Naoji Otsuka, Yoshinori Nakagawa, Atsuhiko Masuyama, Naomi Oshio
  • Liquid applying apparatus and ink jet printing apparatus
    Patent number: 7588639
    Abstract: A liquid applying apparatus can prevent an applying liquid from evaporating while an applying operation is stopped and can reliably prevent the liquid from leaking even when, for example, the posture of the apparatus is tilted. An abutting member of a holding member is abutted, under an urging force of a spring, against an applying surface of an applying roller. Thus, a liquid holding space is formed between the applying roller and a holding member to hold the applying liquid. The abutting member is annularly formed of a single member. The applying roller rotates to cause the applying liquid held in the holding space to adhere to an outer peripheral surface of the applying roller. The applying liquid is then applied to the applying medium.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: September 15, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Osamu Iwasaki, Naoji Otsuka, Yoshinori Nakagawa, Keisei Hakamata
  • INKJET PRINTING APPARATUS AND INK EJECTION CONTROL METHOD
    Publication number: 20090195577
    Abstract: For the temperature adjustment process that uses high viscosity ink and is based on table No. 1, in a low temperature environment, an ink refill failure may occur and lower density may appear in high duty printing. Also for the temperature adjustment process that uses high viscosity ink and is based on table Nos. 2 and 3, in a low temperature environment, an ink refill failure may occur and lower density may appear. On the other hand, for a temperature adjustment process that employs table No. 4, a smaller pre-heat pulse width than that for table No. 1, for the conventional temperature adjustment, is employed in the same low temperature environment. Therefore, an ink refill failure does not occur, and horizontal or vertical gaps do not appear during high duty printing.
    Type: Application
    Filed: January 28, 2009
    Publication date: August 6, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Kiyomi Aono, Osamu Iwasaki
  • PLANAR LIGHTING DEVICE
    Publication number: 20090196069
    Abstract: Provided is a thin, lightweight planar lighting device capable of emitting uniform illumination light free from brightness unevenness and enabling increase in dimensions. The device includes a light source and a light guide plate disposed opposite to the light source, and the light guide plate includes a light entrance plane opposite to the light source and a light exit plane containing one side of the light entrance plane, and has a shape growing thicker in direction perpendicular to the light exit plane with the increasing distance from the light entrance plane and contains scattering particles for scattering light entering through the light entrance plane and propagating the inside thereof.
    Type: Application
    Filed: January 23, 2007
    Publication date: August 6, 2009
    Applicant: FUJIFILM CORPORATION
    Inventor: Osamu Iwasaki
  • Image processing apparatus and image processing method
    Patent number: 7564591
    Abstract: In a printer, when difference in ejection characteristic among nozzles appears as density non-uniformity and the way of letting the density non-uniformity appear is different depending upon kind of image, proper density correction is performed. Specifically, the kind of image to be printed is judged, and when the kind of image is a halftone image according to the judgment, a density correction table corresponding to the halftone image is selected and used to perform the density correction. Also when the kind of image is judged to be a solid image (without a portion of the halftone image), a proper table is selected similarly and used to perform the density correction.
    Type: Grant
    Filed: October 4, 2000
    Date of Patent: July 21, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kiichiro Takahashi, Naoji Otsuka, Hitoshi Sugimoto, Hitoshi Nishikori, Osamu Iwasaki, Kaneji Yamada, Minoru Teshigawara, Takeshi Yazawa, Toshiyuki Chikuma
  • Ink jet printing apparatus
    Patent number: 7556339
    Abstract: For a liquid applying mechanism of an ink jet printing apparatus, a liquid to be used for application to a medium is prevented from evaporating and leaking from a liquid holding member. An applying roller and the liquid holding member contact with each other to hold the liquid and apply the held liquid to a printing medium by way of the applying roller. In this configuration, the surface of the applying roller has no irregularities. Thereby, the applying roller can contact the liquid holding member to form an adequate liquid-tight seal therebetween.
    Type: Grant
    Filed: February 8, 2005
    Date of Patent: July 7, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshinori Nakagawa, Naoji Otsuka, Osamu Iwasaki
  • Light Guide Member, Planar Lighting Device Using the Same, and Rod-Type Lighting Device
    Publication number: 20090147537
    Abstract: A transparent light guide member comprising a first light guide unit in the form of a transparent plate having a rectangular light emitting plane and a parallel groove formed on a rear surface located opposite from the rectangular light emitting plane and parallel to one side of the rectangular light emitting plane; and a second light guide unit, which is transparent, having a columnar external shape to be accommodated in the parallel groove and containing light-scattering particles. Let ? be the scattering cross section of the particles, LG the length of the light guide unit 32 in the direction in which light propagates, Np the particle density, and KC a compensation coefficient, then a value ?·LG·Np·KC the light guide member assumes is not smaller than 1.1 and not greater than 8.2, and the compensation coefficient KC is not smaller than 0.005 and not greater than 0.1.
    Type: Application
    Filed: March 29, 2006
    Publication date: June 11, 2009
    Applicant: FUJIFILM CORPORATION
    Inventor: Osamu Iwasaki
  • Liquid applying apparatus and printing apparatus
    Patent number: 7536974
    Abstract: A liquid holding member abuts against an applying surface (outer surface) of an applying member which applies an applying liquid to an applying medium, and a liquid holding space for holding the applying liquid is formed between the applying member and the liquid holding member. By rotating the applying member, the applying liquid held in the liquid holding space is affixed to the outer surface of the applying member while being restricted to the abutting member, and the applying liquid is applied to the medium. In this event, the abutting position of the applying member and the liquid holding member differs between after applying operation completion and before applying operation starting. Thus, distortion generated at the abutting position of the applying surface of the applying member and the liquid holding member can be reduced.
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: May 26, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Osamu Iwasaki, Naoji Otsuka, Yoshinori Nakagawa, Atsuhiko Masuyama, Naomi Oshio