Patents by Inventor Hirotoshi Kishi

Hirotoshi Kishi 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: 10466636
    Abstract: An image forming apparatus includes a controller configured to control first and second image forming units to form a plurality of groups of detection images, the plurality of groups of detection images being scaled based on a scaling factor, determine a plurality of detection start timings that respectively correspond to the plurality of groups based on the scaling factor, control a detection unit to detect the plurality of groups based on the determined detection start timings, and control the detected misregistration of a first image to be formed by the first image forming unit and a second image to be formed by the second image forming unit.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: November 5, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takehiro Kishi, Hirotoshi Tajima
  • Patent number: 7161716
    Abstract: The present invention provides an image reading apparatus comprising a scanning member movable along an original mounting table and provided with a reading element for reading an original image, a frame member housing the scanning member, and a control board adapted for controlling the scanning member and provided in the frame member, wherein the control board is so positioned that, when the scanning member moves toward the control board, a portion protruding under the scanning member does not pass on the control board.
    Type: Grant
    Filed: September 5, 2000
    Date of Patent: January 9, 2007
    Assignee: Canon Kabsuhiki Kaisha
    Inventors: Shigeru Kawasaki, Hirotoshi Kishi, Tsuyoshi Yamauchi, Toshio Takahashi
  • Patent number: 6717702
    Abstract: An image reading apparatus comprises a scanning member movable along an original mounting table, the scanning member having a reading element for reading the image of an original, and a drive source for moving the scanning member, a frame containing the scanning member therein, and a cable for electrically connecting the scanning member and the frame side together, the cable having a first electrical signal path connected to the reading element, and a second electrical signal path connected to the drive source.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: April 6, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsuyoshi Yamauchi, Hirotoshi Kishi, Shigeru Kawasaki, Toshio Takahashi
  • Patent number: 5420666
    Abstract: An image forming apparatus includes an image forming mechanism for forming an image and a matrix circuit having connected thereto a plurality of keys including an initiating key for instructing the start of image formation and a stop key for interrupting image formation. The image forming apparatus further includes a controller for controlling image formation by the image forming mechanism in accordance with a control sequence and a memory containing a program for sensing key input of the matrix circuit. Prior to the start of image formation, the controller executes the program for sensing key input of the matrix circuit and executes the control sequence in response to the sensing input of the initiating key. During image formation, the controller executes the program for sensing key input of the matrix circuit such that sensing whether the stop key has been input is executed without sensing whether the initiating key has been input.
    Type: Grant
    Filed: August 17, 1993
    Date of Patent: May 30, 1995
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masao Ariga, Hiroyuki Miyake, Katsuichi Shimizu, Hirotoshi Kishi, Hiroshi Ogawa, Takahiko Amanuma, Kazumi Umezawa, Seiji Sagara, Kenji Kurita
  • Patent number: 5223899
    Abstract: A document scanning apparatus includes a first scanner for reciprocating an optical member and for exposing an original document put on a document platen, and a second scanner for feeding an original document to an exposure position and for exposing the original document at the exposure position. A selector selects either the first scanner in a stationary exposure mode or the second scanner in a dynamic exposure mode. In the stationary exposure mode, a controller causes forward movement of the reciprocating optical member to stop and the reciprocating member to move backward in accordance with a detection signal signifying that the trailing edge of a recording sheet has passed a predetermined position in the transport path for the recording sheet. In the dynamic exposure mode, the controller controls the second scanner to feed successive original documents in accordance with the same detection signal for the trailing edge of the recording sheet.
    Type: Grant
    Filed: October 2, 1991
    Date of Patent: June 29, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masao Ariga, Hiroyuki Hattori, Katsuichi Shimizu, Hirotoshi Kishi, Hiroshi Ogawa, Takahiko Amanuma, Kazumi Umezawa, Seiji Sagara, Kenji Kurita
  • Patent number: 5117260
    Abstract: An image processing apparatus provided with a plurality of operation devices for recording or reproducing an image. Using operation control signals, a controller controls the operation devices in accordance with selected information signals. Appropriate ones of the information signals are selected in accordance with the control signals.
    Type: Grant
    Filed: September 11, 1989
    Date of Patent: May 26, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masao Ariga, Hiroyuki Hattori, Katsuichi Shimizu, Hirotoshi Kishi, Hiroshi Ogawa, Takahiko Amanuma, Kazumi Umezawa, Seiji Sagara, Kenji Kurita
  • Patent number: 4763164
    Abstract: An image forming apparatus capable of feeding or transporting recording medium of different sizes through the image forming path. A discriminating device determines whether or not a recording medium has reached a predetermined position in the transport path and a detecting member detects the recording medium a predetermined time thereafter to identify the size of the recording medium. If the recording medium is detected within the predetermined time, it is identified as being of a particular size. When the medium is detected during a time period different from the predetermined time period, the medium is identified as being of a size smaller than the particular size. The image formation operation is controlled as a function of the size identification of the recording medium.
    Type: Grant
    Filed: October 11, 1984
    Date of Patent: August 9, 1988
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masao Ariga, Hiroyuki Hattori, Katsuichi Shimizu, Hirotoshi Kishi, Hiroshi Ogawa, Takahiko Amanuma, Kazumi Umezawa, Seiji Sagara, Kenji Kurita
  • Patent number: 4760410
    Abstract: An image display device includes an image carrier, an image forming station for forming an erasable image on the image carrier, a display station for visually displaying the image formed on the image carrier, and a read station for reading out the image on the image carrier and converting the image to an image signal.
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: July 26, 1988
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hirotoshi Kishi
  • Patent number: 4745491
    Abstract: This specification discloses an image formation apparatus which is provided with an original reading-out scanner for converting an original image into a video signal and in which an original supporting table for supporting an original thereon comprises an input device capable of indicating and inputting any coordinates and the original reading-out scanner is provided in opposed relationship with the original supporting table.
    Type: Grant
    Filed: July 18, 1985
    Date of Patent: May 17, 1988
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirotoshi Kishi, Tadashi Sato, Haruo Tsunoi
  • Patent number: 4646164
    Abstract: The present invention provides an image display apparatus including an image bearing web in the form of an endless belt on which an erasable image is formed, the image being carried into an image display section for observation. If the image bearing web is photosensitive, it is affected by the light, resulting in the deterioration of the image formed. To avoid this, the length of the image bearing web which is used to form one complete image is made equal to the full length of the web divided by a non-integer. Therefore, that position on the image bearing web which is used to form an image to be displayed will be changed for each display to distribute the effect of the light over the entire length of the photosensitive web.
    Type: Grant
    Filed: December 13, 1985
    Date of Patent: February 24, 1987
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hirotoshi Kishi
  • Patent number: 4636787
    Abstract: The present invention provides an image display apparatus including an image bearing web in the form of an endless belt on which an erasable image is formed, the image being carried into an image display section for observation. If the image bearing web is photosensitive, it is affected by the light, resulting in the deterioration of the image formed. To avoid this, the length of the image bearing web which is used to form one complete image is made equal to the full length thereof divided by an integer. Therefore, that position on the image bearing web which is used to form an image to be displayed is not changed for each display to limit the portions of the photosensitive web exposed to light to predetermined areas, thereby avoiding the occurrence of the difference in image quality within each of the predetermined areas.
    Type: Grant
    Filed: July 11, 1983
    Date of Patent: January 13, 1987
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hirotoshi Kishi
  • Patent number: 4541706
    Abstract: A display apparatus for displaying image information of outputs of information processing means, such as a computer. The display is made with the use of electrophotography. The photosensitive member is in flat plate form, which has a transparent conductive base at a first side and a photoconductive layer at a second side. The information is applied to the first side, and the visible image is formed on the second side.
    Type: Grant
    Filed: November 23, 1983
    Date of Patent: September 17, 1985
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hirotoshi Kishi
  • Patent number: 4521099
    Abstract: An image forming apparatus has a rotatable member, a plurality of processing devices for forming an image on the rotatable member and transferring the image to transfer material, a device for fixing the transferred image, circuitry for controlling the operation of the rotating member and processing devices so that when the power switch is turned on at least the fixing device is turned on and when the power switch is turned off the fixing device is turned off while the rotation of the rotatable member is continued. The apparatus also includes a signal generating device associated with one of the processing devices, a first detector for detecting transfer material and a second detector for detecting the position of an original carriage, and circuitry for checking for a paper jam by counting signals from the time of the second detector signal.
    Type: Grant
    Filed: September 22, 1981
    Date of Patent: June 4, 1985
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hajime Katayama, Hiroshi Nitanda, Tateki Nagaoka, Hirotoshi Kishi, Yusaku Takada, Noriyoshi Iida, Tsuneki Inuzuka, Yutaka Komiya
  • Patent number: 4421403
    Abstract: An optical apparatus for scanning an original in a copying machine or the like is disclosed. In the apparatus, a scanning mirror for scanning the original and a stationary mirror for reflecting an image of the original from the scanning mirror in a direction nearly normal to the scanned surface constitute a first optical path. The stationary mirror and a lens for receiving the reflected light from the stationary mirror and focusing the original image on a photosensitive element constitute a second optical path. During scanning of the original by the scanning mirror, the distance between the scanning mirror and the lens and the distance between the lens and the photosensitive element are kept constant.
    Type: Grant
    Filed: February 24, 1982
    Date of Patent: December 20, 1983
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tadashi Sato, Haruo Tsunoi, Hirotoshi Kishi
  • Patent number: 4417805
    Abstract: An image synthesizing device has an original table, an original reader, a selector for selecting an unnecessary area of the original, a selector for selecting a necessary area of an original to replace the unnecessary area, a comparator for comparing the selected unnecessary area and the necessary area, and a controller for controlling magnification of readout signals of the area when the sizes of the unnecessary area and the necessary area are not in accord.
    Type: Grant
    Filed: September 1, 1981
    Date of Patent: November 29, 1983
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hirotoshi Kishi
  • Patent number: 4312587
    Abstract: An image forming apparatus including image forming device, for forming an image on a recording member, having a scanner for scanning the recording member, an input device for selecting and instructing the function mode of the scanner, and a controller having a plurality of stored programs corresponding to the scanning modes for controlling the function of the image forming device, the controller being adapted to select a stored program in response to the input device and controlling the function of the image forming device in accordance with the program of the selected scanning mode.
    Type: Grant
    Filed: March 1, 1978
    Date of Patent: January 26, 1982
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masao Ariga, Hiroyuki Hattori, Katsuichi Shimizu, Hirotoshi Kishi, Hiroshi Ogawa, Takahiko Amanuma, Kazumi Umezawa, Seiji Sagara, Kenji Kurita
  • Patent number: 4275423
    Abstract: In a copying machine or a facsimile apparatus in which an original is scanned to read the information of the original, an original supporting table has caused the information side of the original to be opposed to a slit surface or the like. That is, the original has been placed on the original supporting table with the original surface thereof facing downwardly. A device is shown in which an original is placed on an original supporting table with the original surface thereof facing upwardly and the original is scanned and read. Reading can be effected while the operator confirms the original and further, when the pages of the original are turned over, high operability can be obtained as compared with the conventional devices.
    Type: Grant
    Filed: March 24, 1980
    Date of Patent: June 23, 1981
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tohru Takahashi, Tadashi Sato, Hirotoshi Kishi
  • Patent number: 4205622
    Abstract: An electrophotographic developing apparatus comprises a developing roller and a refreshing roller. The developing roller applies liquid developer to an electrostatic latent image carrier moving in a predetermined direction. The refreshing roller comes into contact with the developing roller and rotates at the same peripheral speed as that of the carrier and in the opposite direction to the moving direction of the carrier. The rotational motion of the refreshing roller causes the developing roller to rotate so as to effect developing the electrostatic latent image on the carrier.
    Type: Grant
    Filed: August 30, 1978
    Date of Patent: June 3, 1980
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyuki Miyake, Hiroshi Ogawa, Hirotoshi Kishi, Kazumi Umezawa, Seiji Sagara, Hiroshi Hara
  • Patent number: 4203587
    Abstract: A sheet sorter device comprises a feeder for introducing sheets to be sorted, a conveyor for conveying the sheets from the feeder to a sheet receiving portion, a plurality of bin trays for receiving therein the sheets upwardly inclined in the direction of movement of the sheets when received, a guide for supporting and guiding the bin trays, and a bin tray displacing device capable of selectively effecting the displacement of at least one of the bin trays to a sheet receiving position by widening the entrance thereof and the holding at a predetermined position of a bin tray to be subsequently displaced.
    Type: Grant
    Filed: July 12, 1977
    Date of Patent: May 20, 1980
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirotoshi Kishi, Hiroyuki Hattori, Katsuichi Shimizu
  • Patent number: 4193483
    Abstract: A spring clutch device includes a driving side clutch shell, a driven side clutch shell opposed to and coaxial with the driving side clutch shell, a clutch spring disposed in a tight manner over the two clutch shells, a stop member disposed coaxially with the clutch shells and engaged with one end of the clutch spring to control the action of the clutch spring, and a control member for acting on the stop member, there are formed projections on the circumference of the stop member, in an axially and circumferentially staggered relationship, and the control member is selectively displaceable to positions corresponding to the projections for engagement and disengagement with the projections, thereby controlling ON-OFF of the clutch.
    Type: Grant
    Filed: October 11, 1977
    Date of Patent: March 18, 1980
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masao Ariga, Hiroyuki Hattori, Katsuichi Shimizu, Hirotoshi Kishi, Hiroshi Ogawa, Takahiko Amanuma, Kazumi Umezawa, Seiji Sagara