Patents by Inventor Akiyoshi Kimura

Akiyoshi Kimura 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: 5072260
    Abstract: An image forming apparatus includes a movable photosensitive member, a charger for uniformly charging the photosensitive member, exposure device for illuminating an original and exposing the photosensitive member charged by the charger to the light from the original, a scanner for scanning by a laser beam the photosensitive member charged by the charger, the scanner including a deflector for deflecting the laser beam, and wherein the deflector is disposed upstream of an exposure position of the exposure device with respect to movement direction of the photosensitive member, and a scanning position of the scanner is disposed downstream of the exposure position. The laser beam forms a margin on the photosensitive member for the leading edge of a copy sheet.
    Type: Grant
    Filed: January 2, 1991
    Date of Patent: December 10, 1991
    Assignee: Canon Kabushiki Kaisha
    Inventor: Akiyoshi Kimura
  • Patent number: 4945385
    Abstract: An image forming apparatus includes a photosensitive member, first optical system for illuminating an original and exposing the photosensitive member to light from the original, the first optical system including a lens unit having a lens for forming an image of the original on the photosensitive member, and a second optical system for projecting light on the photosensitive member, wherein the lens unit and the second optical systems are fixed on the same base member.
    Type: Grant
    Filed: September 8, 1988
    Date of Patent: July 31, 1990
    Assignee: Canon Kabushiki Kaisha
    Inventor: Akiyoshi Kimura
  • Patent number: 4941018
    Abstract: An image forming apparatus includes an image bearing member, image forming station for forming a latent image on the image bearing member, a conveying passage extending toward the image bearing member to guide a developing device, a first moving mechanism for engaging with the developing device in the conveying passage and moving it in a substantially horizontal plane, wherein the image bearing member, the latent image forming station, the conveying passage and the first moving mechanism are provided in a main body of the image forming apparatus, a device for accommodating a plurality of developing devices.
    Type: Grant
    Filed: December 27, 1988
    Date of Patent: July 10, 1990
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshirou Kasamura, Masashi Ohashi, Toshihiko Kusumoto, Naoki Okuda, Nobukazu Sasaki, Yasunori Maeda, Akiyoshi Kimura, Katsumi Munenaka, Yoshikuni Toyama, Minoru Nada, Ken Tanabe, Masamichi Ikeda, Yasuhide Hishikawa, Takashi Ozawa
  • Patent number: 4918702
    Abstract: A laser unit includes a laser source for emitting a laser beam, a collimator lens for collimating the laser beam emitted from the laser source, a supporting member, made of a good thermal conductivity material, for supporting the laser source, and a heat insulating layer disposed between the supporting member and the collimator lens.
    Type: Grant
    Filed: November 29, 1988
    Date of Patent: April 17, 1990
    Assignee: Canon Kabushiki Kaisha
    Inventor: Akiyoshi Kimura
  • Patent number: 4908662
    Abstract: An automatic original feeding apparatus has a coordinates position detecting device provided with a supporting table for supporting thereon a sheet original of which the area during image formation is to be designated, a conveying device for directing the inserted sheet original to a predetermined position, and a feed device provided upstream of the conveying device and responsive to the termination of the area designation to change over to a feeding position and feed the sheet original on the supporting table to the conveying device.
    Type: Grant
    Filed: September 7, 1988
    Date of Patent: March 13, 1990
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuyoshi Yamamoto, Toshirou Kasamura, Yasunori Maeda, Nobukazu Sasaki, Toshihiko Kusumoto, Naoki Okuda, Tatsuya Shiratori, Takashi Ozawa, Akiyoshi Kimura, Atsushi Kubota, Masashi Ohashi, Michiro Koike
  • Patent number: 4905046
    Abstract: A copying apparatus having an optical scanning system includes an upper casing that can be opened and closed and a scanning device on the upper casing for scanning an original. The scanning device includes an abnormality detector for detecting the occurrence of an abnormality during a copy operation. When an abnormality is detected by the detector, the scanning device is moved to a scanning start position.
    Type: Grant
    Filed: May 23, 1988
    Date of Patent: February 27, 1990
    Assignee: Canon Kabushiki Kaisha
    Inventors: Haruo Tsunoi, Naoki Okuda, Akiyoshi Kimura
  • Patent number: 4873547
    Abstract: An image forming apparatus includes sheet accommodating cassette for accommodating sheets, a device for forming images on the sheets, a first sheet conveying passage for conveying the sheet to the image forming device from the sheet accommodating cassette, a conveyor for accommodating a bundle of sheets having been subjected to an image forming operation by the image forming means at first sides thereof in a form in which leading edges of the sheets are gradually deviated in a sheet advancement direction, and for conveying the bundle as a whole, a feeder, disposed downstream of the conveyor with respect to the sheet advancement direction, for feeding one by one the sheets of the bundle from the sheet closest to the feeder, a second sheet conveying passage merging into the first passage for refeeding to the image forming device the sheets fed by the feeder, and a confining device for confining the sheets of the bundle other than the sheet being fed by the feeder.
    Type: Grant
    Filed: February 16, 1989
    Date of Patent: October 10, 1989
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nobukazu Sasaki, Toshirou Kasamura, Masashi Ohashi, Naoki Okuda, Toshihiko Kusumoto, Yasunori Maeda, Takashi Ozawa, Yasuyoshi Yamamoto, Atsushi Kubota, Akiyoshi Kimura, Makoto Masuda
  • Patent number: 4829341
    Abstract: A document feeding apparatus comprising a first original supporting device on which an original is placed, an original inlet port for receiving the original placed on the first original supporting device, a conveying device for guiding the original fed from the inlet port to a predetermined position and exhausting the original from the predetermined position, and a second original supporting device mounted on a housing of the document feeding apparatus and having an image area designation device for designating an image area of the original. In an image area designation mode of the apparatus, the original is placed on the image area designation device, a desired image area is designated, and the original is placed on the first original supporting device and is guided to the predetermined position through the inlet port.
    Type: Grant
    Filed: July 25, 1988
    Date of Patent: May 9, 1989
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nobukazu Sasaki, Toshiro Kasamura, Atsushi Kubota, Toshihiko Kusumoto, Tatsuya Shiratori, Takashi Ozawa, Yasuyoshi Yamamoto, Michiro Koike, Masashi Ohashi, Akiyoshi Kimura
  • Patent number: 4823159
    Abstract: An image forming apparatus includes an image forming station for forming an image on a sheet; a rotatable member for transferring the sheet in a first direction toward the image forming station; supporting device for supporting the rotatable member for displacement in a second direction which crosses the first direction; driving device for displacing the rotatable member in the second direction to correct deviation of the sheet in the second direction; and inlet guide for guiding the sheet to the rotatable member, the guide being displaceable in the second direction together with the rotatable member.
    Type: Grant
    Filed: November 30, 1987
    Date of Patent: April 18, 1989
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuyoshi Yamamoto, Masashi Ohashi, Tatsuya Shiratori, Michiro Koike, Atsushi Kubota, Nobukazu Sasaki, Akiyoshi Kimura, Takashi Ozawa, Toshirou Kasamura, Toshihiko Kusumoto
  • Patent number: 4812874
    Abstract: An image forming apparatus capable of reproducing in different colors a plurality of image areas selected from a plurality of different originals on a single copy sheet.
    Type: Grant
    Filed: June 13, 1988
    Date of Patent: March 14, 1989
    Assignee: Canon Kabushiki Kaisha
    Inventors: Atsushi Kubota, Nobukazu Sasaki, Toshirou Kasamura, Toshihiko Kusumoto, Tatsuya Shiratori, Takashi Ozawa, Yasuyoshi Yamamoto, Michiro Koike, Masashi Ohashi, Akiyoshi Kimura
  • Patent number: 4799084
    Abstract: An image forming apparatus includes an image forming station for conveying a sheet material along a lateral reference position and for forming an image on the sheet material; refeeding device for refeeding to the image forming station the sheet material on which the image has been formed in the image forming station; means, provided in the sheet refeeding means, for shifting the sheet material in the lateral direction from the lateral reference position by a predetermined amount, wherein the amount of the shift is predetermined on the basis of a change in a lateral dimension of the sheet material resulting from an image forming operation in the image station.
    Type: Grant
    Filed: April 4, 1986
    Date of Patent: January 17, 1989
    Assignee: Canon Kabushiki Kaisha
    Inventors: Michiro Koike, Takashi Ozawa, Yasuyoshi Yamamoto, Masashi Ohashi, Akiyoshi Kimura, Nobukazu Sasaki, Toshirou Kasamura, Atsushi Kubota, Tatsuya Shiratori, Toshihiko Kusumoto
  • Patent number: 4792828
    Abstract: An image forming apparatus capable of effecting plural image forming operations on one transfer sheet includes an image transfer device for transferring an image on the transfer sheet, an image magnification changing mechanism for changing the magnification of the image to be transferred onto the transfer sheet, and a control device for controlling the magnification changing mechanism in accordance with deformation of the transfer sheet caused by an image forming operation on the transfer sheet, after a first image is formed on the transfer sheet and before a second image is formed on the same transfer sheet, whereby those images are correctly registered.
    Type: Grant
    Filed: July 29, 1986
    Date of Patent: December 20, 1988
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takashi Ozawa, Yasuyoshi Yamamoto, Masashi Ohashi, Akiyoshi Kimura, Nobukazu Sasaki, Toshirou Kasamura, Atsushi Kubota, Tatsuya Shiratori, Toshihiko Kusumoto, Michiro Koike, Ken Tanabe, Hidetoshi Tanaka
  • Patent number: 4787616
    Abstract: A sheet stacking device and an image forming apparatus provided with the sheet stacking device. The sheet stacking device has a sheet sorting function, and in addition, sheet re-feeding function so as to make it possible to produce a duplex copy or superimposed copy. It is further possible to use the sorter portion as a sheet feeding facility.
    Type: Grant
    Filed: October 25, 1985
    Date of Patent: November 29, 1988
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nobukazu Sasaki, Toshirou Kasamura, Atsushi Kubota, Yasuyoshi Yamamoto, Masashi Ohashi, Michiro Koike, Tatsuya Shiratori, Akiyoshi Kimura, Takashi Ozawa
  • Patent number: 4777498
    Abstract: An image forming apparatus such as a copying apparatus and a laser beam printer, is capable of forming a superimposed image or duplex image on one sheet. The sheet which has been once subjected to the image forming operation and which is going to be subjected to another image forming operation is reintroduced into the image forming station selectively through a flow-through sheet passage or through an intermediate tray on which the transfer sheets are once stacked. A displaceable flapper is provided to direct the sheet selectively to the flow-through passage or to the intermediate tray.
    Type: Grant
    Filed: May 6, 1986
    Date of Patent: October 11, 1988
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshirou Kasamura, Takashi Ozawa, Yasuyoshi Yamamoto, Masashi Ohashi, Akiyoshi Kimura, Nobukazu Sasaki, Michiro Koike, Atsushi Kubota, Tatsuya Shiratori, Toshihiko Kusumoto
  • Patent number: 4754301
    Abstract: An image forming apparatus includes a plurality of the developing devices for developing the latent image formed on an image bearing member. The plural developing devices are each movable between its developing position for developing the latent image on the image bearing member and its retracted position away from the image bearing member. The image forming apparatus includes a shutter for selectively opening and closing the developing aperture of the developing device of one of the developing devices. The shutter opens and closes the developing aperture of said one of the developing devices in association with movement of the other developing device between the developing position and the retracted position.
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: June 28, 1988
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshirou Kasamura, Akiyoshi Kimura, Masashi Ohashi, Yasuyoshi Yamamoto, Takashi Ozawa, Toshihiko Kusumoto, Tatsuya Shiratori, Nobukazu Sasaki, Michiro Koike, Atsushi Kubota
  • Patent number: 4708455
    Abstract: An image forming apparatus or a process unit detachably mountable in the main assembly of the image forming apparatus, the process unit including an image bearing member and processing device (including a part or all of the components) which is actable on the image bearing member. In other words, the present invention relates to a process unit detachably mountable in an image forming apparatus, the process unit comprising an image bearing member, discharger actable on the image bearing member and a device for fixing the image bearing member, and the discharger and the fixing device being integrally supported by a supporting member.
    Type: Grant
    Filed: February 12, 1986
    Date of Patent: November 24, 1987
    Assignee: Canon Kabushiki Kaisha
    Inventors: Atsushi Kubota, Shinnosuke Taniishi, Shinichi Sasaki, Akiyoshi Kimura, Michiro Koike
  • Patent number: 4531831
    Abstract: Disclosed is a variable magnification image formation apparatus wherein an image of an original is formed on a photosensitive member by the use of a zoom lens assembly of the type in which the focal length is changed by rotating a zoom ring about the optical axis and wherein the zoom ring is rotated by wire in synchronism with movement of the zoom lens assembly.
    Type: Grant
    Filed: July 5, 1984
    Date of Patent: July 30, 1985
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tadayuki Kitajima, Akiyoshi Kimura