Patents by Inventor Kazuhiro Hirota

Kazuhiro Hirota 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: 6109605
    Abstract: In an sheet finishing apparatus for receiving a sheet on which an image has been formed by an image forming apparatus, and for ejecting the sheet after a front side thereof is reversed, the sheet finishing apparatus includes: a sheet conveyor for conveying the sheet fed from the image forming apparatus downstream; a sheet reversing device for receiving the sheet conveyed by the sheet conveyor, and for reversing the front side of the sheet by rotation; a sheet holder provided on a peripheral portion of the sheet reversing device for holding a leading edge portion of the sheet conveyed by the sheet conveyor, the sheet holder capable of being opened or closed; a sheet stopper for blocking the leading edge portion of the sheet to be stopped at a position where the front side of the sheet is reversed by a rotation of the sheet reversing device; and a sheet stacking member for stacking the sheet separated from the sheet reversing device by a further rotation of the reversing device after the leading edge of the she
    Type: Grant
    Filed: March 18, 1998
    Date of Patent: August 29, 2000
    Assignee: Konica Corporation
    Inventors: Kazuhiro Hirota, Hisao Hosoya, Satoru Endo, Yuji Kanazawa, Takanori Yoshida, Kazuyoshi Omi, Mamoru Tomotsune, Masanobu Kawano, Yukihiko Nishimoto
  • Patent number: 6106462
    Abstract: Disclosed is a celiac diagnostic apparatus in which the characteristics of a filter for filtering a wave reflected by a tissue inside an object are made steep, and an ultrasonic wave capable of making a high-accuracy diagnosis for the object is used. C1, C2, and C3 are constituted using variable capacitance diodes. Three LC filters, i.e., an LC filter constituted by L1 and C1, an LC filter constituted by L2 and C2, and an LC filter constituted by L3 and C3 are serially connected to constitute the filter, whose cutoff characteristics is still practical even when the cutoff frequency exceeds 20 MHz.
    Type: Grant
    Filed: August 28, 1997
    Date of Patent: August 22, 2000
    Assignee: Terumo Kabushiki Kaisha
    Inventors: Mitsutoshi Yaegashi, Kazuhiro Hirota
  • Patent number: 6091929
    Abstract: In an image forming apparatus provided with an image reader to read an image on an image surface of a document and to output image data corresponding to the image; an image processor to process the image data; an image forming device to successively form images on sheets on the basis of the processed image data; there are further provided a post processing device having a stapling stand on which the sheets are placed and a stapler to staple at a predetermined position on the stapling stand, wherein the predetermined position locates at only a single side of the sheet placed on the stapling stand; and a stapling position selector to select a stapling position on the image formed on the sheets, wherein the image processor processes the image data so that when the sheets are placed on the stapling stand, the stapling position on the image formed on the sheets selected by the stapling position selector coincides with the predetermined position on the stapling stand.
    Type: Grant
    Filed: October 26, 1998
    Date of Patent: July 18, 2000
    Assignee: Konica Corporation
    Inventors: Hirohiko Yamazaki, Akihiko Oda, Koichi Kitamoto, Kazuhiro Hirota, Masaki Kakutani
  • Patent number: 5984299
    Abstract: A sheet finishing apparatus for finishing a sheet, on which an image has been formed, conveyed from an image forming apparatus, the sheet finishing apparatus includes: a sheet ejecting member for ejecting the sheet after finishing; and an exit tray for receiving the sheet ejected by the sheet ejecting member after finishing is conducted. The exit tray includes a movable exit tray member on which the sheet is stacked, and a stationary exit tray member for supporting the movable exit tray member. The movable exit tray member has a sheet stacking surface on which the sheet is stacked, and a stopper portion provided adjacent to the sheet ejecting member to bring an edge of the sheet into contact with the stopper portion. The movable exit tray member is pivotally supported around a supporting shaft provided on a leading edge portion of the stationary exit tray member.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: November 16, 1999
    Assignee: Konica Corporation
    Inventors: Kazuhiro Hirota, Hisao Hosoya, Satoru Endo, Yuji Kanazawa, Takanori Yoshida, Kazuyoshi Omi, Mamoru Tomotsune
  • Patent number: 5449158
    Abstract: A sorter distributes plural sheets to plural sheet holding bins. The sorter includes the plural sheet holding bins for holding the plural sheets, in which inserting portions of the plural sheet holding bins are aligned in a line in a predetermined direction; a conveyance belt for conveying the plural sheets along the line; a distributor, that is reciprocally movable along the line, for distributing the plural sheets to the plural sheet holding bins; motorized pulleys for winding and unwinding a wire member; the wire member being connected between the motorized pulleys and the distributor; nipping apparatus for nipping and for conveying each of the plural sheets, the nipping apparatus being positioned between the conveyance belt and the wire member.
    Type: Grant
    Filed: June 25, 1993
    Date of Patent: September 12, 1995
    Assignee: Konica Corporation
    Inventors: Kazuhiro Hirota, Keisuke Tanaka, Izumi Hamanaka, Minoru Kawano, Hisao Hosoya, Akihiko Nishiki
  • Patent number: 5292112
    Abstract: A sheet feed cassette for loading a recording sheet for an image forming apparatus in which the recording sheet can be loaded in a form of U between a lower supporting base and an upper casing member. The cassette further includes a sheet delivery guide member disposed between the supporting base and the casing member, wherein the U-shaped recording sheet is folded around the sheet delivery guide member.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: March 8, 1994
    Assignee: Konica Corporation
    Inventors: Kazuhiro Hirota, Kohji Yoshie
  • Patent number: 5259605
    Abstract: A sorter, which sorts sheets transferred from an image forming apparatus to form a plurality of sheet stacks and staples each sheet stacks, is disclosed herewith. The sorter is provided with a plurality of bins arrayed in an upright direction for stacking the sorted sheets, and is provided also with a stapler to staple each sheet stack. The bin is adapted to swing horizontally between a first angular position to stack the sorted sheets and a second angular position to undergo the stapling of the sheet stack by the stapler. The stapler is adapted to move along the upright direction through a plurality of stapling positions, and staples each sheet set at each stapling position.
    Type: Grant
    Filed: December 27, 1991
    Date of Patent: November 9, 1993
    Assignee: Konica Corporation
    Inventors: Kohji Yoshie, Norio Jouichi, Masanobu Kawano, Yoshikazu Maekawa, Osamu Murata, Junzi Sato, Kazuhiro Hirota, Hisao Hosoya
  • Patent number: 5223905
    Abstract: An automatic document conveying device comprising a paper-feeder for sequentially separating one document sheet from a stack of document sheets loaded on a document loading table and for sequentially transporting each document sheet to a standby position upstream of an image exposure section and for halting each document sheet at the standby position, the standby position being variably determined by the length of each document sheet. A conveyor conveys each document sheet from the standby position to an exposure position on the image exposure section on a glass surface of the document loading table, each document is discharged after it is scanned and exposed by the image exposure section. The image exposure section is controlled to scan and expose a first document sheet, and a second document sheet is halted at the standby position while the first document is being scanned and exposed.
    Type: Grant
    Filed: February 20, 1991
    Date of Patent: June 29, 1993
    Assignee: Konica Corporation
    Inventors: Yasushi Yamada, Kazuhiro Hirota, Akihiko Nishiki
  • Patent number: 5213320
    Abstract: A paper feed device and method for separating sheets of paper one by one from the bottom of a stack of paper loaded on a paper loading tray and for feeding the separated paper sheets consecutively. The feed device includes a rotatable hollow cylinder having a peripheral surface positioned below and close to the front end of the paper loading tray in the direction of paper sheet feed, and having an opening for drawing a paper sheet against the peripheral surface by vacuum suction. The vacuum suction is variable to set the suction pressure at the low level at the start of a paper sheet feed operation by the cylinder means, and if, after the predetermined time interval, the passage of the paper sheet is not detected, the vacuum suction pressure is increased to a higher level and maintained at the higher level to feed successive paper sheets. A paper sheet front end sensor, a conveyor, and a timer for setting a predetermined time interval after the start of a paper sheet operation, are also provided.
    Type: Grant
    Filed: April 17, 1991
    Date of Patent: May 25, 1993
    Assignee: Konica Corporation
    Inventors: Kazuhiro Hirota, Izumi Hamanaka
  • Patent number: 5192065
    Abstract: A sheet sorting machine for sorting plural sheets to plural groups and stapling the sheets by the group. The sheet sorting machine has a sorting assembly to convey the sheets to the plural bins by the group; a positioning member to true up the sheets to a setting position in each of the bins; a member to fix the sheets in the bins; oscillator to move the bins, holding the sheets at the setting position in the bins, to a stapling position; and stapler to staple the sheets at the stapling position; in which the fixing member fixes the sheets before the oscillator sets the sheets to the stapling position.
    Type: Grant
    Filed: December 31, 1991
    Date of Patent: March 9, 1993
    Assignee: Konica Corporation
    Inventors: Kazuhiro Hirota, Hisao Hosoya, Yasushi Yamada, Kazunobu Miura, Akihiko Nishiki
  • Patent number: 5169135
    Abstract: The invention relates to a document handling apparatus for use in a copying machine which separates a document from the bottom of a stack of documents on a loading plate to an exposure location, feeds back the document onto the top of the stack after exposure. The document handling apparatus has a separator arm fixed to a rotatable shaft which is driven intermittently by a drive system. The separator arm contacts the top surface of the stack of documents to be fed to the exposure location with the weight of the arm, loads the documents having been returned from the exposure location on the separator arm, moves downwardly with the circulation of the documents until being released from the bottom of the stack of the documents. A partially toothed gear of the drive system is mounted on a rotatable shaft which is geared with the pinion gear to rotate the rotatable arm in its toothed circumferential portion and is free from the pinion gear out of the toothed circumferential portion.
    Type: Grant
    Filed: April 29, 1992
    Date of Patent: December 8, 1992
    Assignee: Konica Corporation
    Inventors: Izumi Hamanaka, Kazuhiro Hirota
  • Patent number: 5088717
    Abstract: The invention provides an apparatus for feeding a paper in which there are provided a stacker for placing a stack of papers and threefold cylinder for separating the lowermost paper by vacuum suction from the stack of papers placed on the stacker and sequentially feeding the separated paper one by one. The threefold cylinder is disposed below the stacker in the vicinity of the leading edge of the stacker in relation to the feeding direction. And, the threefold cylinder includes a first cylinder rotatable and provided with a number of through holes on the circumferential surface; a second cylinder, installed inside the first cylinder, provided with a slit-shaped opening on the circumferential surface; a third cylinder, installed inside the second cylinder, provided with a slit-shaped opening on the circumferential surface thereof. The third cylinder is connected to vacuum suction.
    Type: Grant
    Filed: July 30, 1990
    Date of Patent: February 18, 1992
    Assignee: Konica Corporation
    Inventors: Izumi Hamanaka, Kazuhiro Hirota