Patents by Inventor Hiroyuki Tadokoro

Hiroyuki Tadokoro 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).

  • Publication number: 20220396027
    Abstract: A molding device includes a movement processing unit configured to move a liquid column sandwiched between two substrates and a molding unit configured to perform a molding process by partially changing the liquid column to a solid within a prescribed molding region.
    Type: Application
    Filed: November 18, 2020
    Publication date: December 15, 2022
    Applicant: National University Corporation Yokohama National University
    Inventors: Shoji Maruo, Hiroyuki Tadokoro, Hotaka Hirata
  • Publication number: 20120219390
    Abstract: A substrate transfer apparatus comprising: a plurality of floating-transfer guide plates adjacent to each other with a space therebetween, each of the guide plates having a substrate-placing surface on which a substrate is to be placed, and a plurality of floating-gas ejecting holes for floating the substrate with use of a gas; a gas supplying source for supplying the floating gas to the respective guide plates; and an arm for transferring the floated substrate from the guide plate, from which the substrate is to be transferred, to the adjacent guide plate to which the substrate is to be transferred, wherein the substrate-placing surface of the guide plate to which the substrate is to be transferred is situated lower than the substrate-placing surface of the guide plate from which the substrate is to be transferred.
    Type: Application
    Filed: May 3, 2012
    Publication date: August 30, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Katsushi Kishimoto, Yusuke Fukuoka, Hiroyuki Tadokoro, Yusuke Ozaki
  • Publication number: 20100034622
    Abstract: A substrate transfer apparatus comprising: a plurality of floating-transfer guide plates adjacent to each other with a space therebetween, each of the guide plates having a substrate-placing surface on which a substrate is to be placed, and a plurality of floating-gas ejecting holes for floating the substrate with use of a gas; a gas supplying source for supplying the floating gas to the respective guide plates; and an arm for transferring the floated substrate from the guide plate, from which the substrate is to be transferred, to the adjacent guide plate to which the substrate is to be transferred, wherein the substrate-placing surface of the guide plate to which the substrate is to be transferred is situated lower than the substrate-placing surface of the guide plate from which the substrate is to be transferred.
    Type: Application
    Filed: August 4, 2009
    Publication date: February 11, 2010
    Inventors: Katsushi Kishimoto, Yusuke Fukuoka, Hiroyuki Tadokoro, Yusuke Ozaki
  • Publication number: 20100012037
    Abstract: A substrate transfer apparatus comprising: a plurality of floating-transfer guide plates adjacent to each other with a space, each of guide plate having a plurality of floating gas ejecting holes; a gas supplying source for supplying a floating gas to the guide plates; a tray that is placed on one of the guide plates in order to mount a substrate to be transferred, and that is floated by the floating gas; and a transfer arm for transferring the floated tray to the adjacent other guide plate from the guide plate, wherein the tray includes a main body portion having both side edges parallel to a transfer direction of the tray, and an outward projecting portion that is formed so as to partially project outwardly from at least one of both side edges of the main body portion, and wherein the transfer arm is in contact and engaged with the outward projecting portion when the tray is transferred by the transfer arm.
    Type: Application
    Filed: July 15, 2009
    Publication date: January 21, 2010
    Inventors: Katsushi Kishimoto, Yusuke Fukuoka, Mitsuhiro Toyoda, Hiroyuki Tadokoro, Yusuke Ozaki
  • Patent number: 7119790
    Abstract: When an operation panel is detached from a main unit in a state where a display unit is projected from the main unit, the controller controls to accommodate the display unit into the main unit. When the operation panel is attached to the main unit in a state where the display unit is accommodated in the main unit, the controller controls to project the display unit from the main unit.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: October 10, 2006
    Assignee: Clarion Co., Ltd.
    Inventors: Hiroyuki Tadokoro, Masami Maesaka
  • Publication number: 20030025229
    Abstract: The present invention provides a method for manufacturing pitch-based carbon fiber by melt-spinning a mesophase pitch having optical anisotropy by using nozzles each equipped with an introduction hole entry portion, an introduction hole, an approach portion, and a discharge hole, and then applying thereto infusibilization, carbonization, or graphitization, wherein the mesophase pitch is passed through a plurality of contraction holes disposed in a substantially straight line in the introduction hole entry portion of each nozzle, then expanded in the introduction hole, and thereafter contracted in the approach portion and then spun by being passed through the discharge hole.
    Type: Application
    Filed: August 1, 2002
    Publication date: February 6, 2003
    Inventors: Yutaka Arai, Tsutomu Nakamura, Hiroyuki Tadokoro, Osamu Katou
  • Patent number: 6204933
    Abstract: A personal computer has a print image developing means and a data compression means including a fixed rate compression. A color printer has a data extension means, a color correction means, a gamma correction means, a first halftoning means, an image area segmentation means, and a second halftoning means. The transmission time of a print image can be shortened necessarily to less than a constant time, and further, since an enormous memory for extension is unnecessary, a low cost printer can be provided.
    Type: Grant
    Filed: June 11, 1998
    Date of Patent: March 20, 2001
    Assignees: Hitachi, Ltd., Hitachi Information Technology Co., Ltd.
    Inventors: Eiji Yoshino, Hitoshi Tamura, Akira Sasaki, Hiroyuki Tadokoro, Nobuo Suzuki, Tatsuki Inuzuka, Atsushi Onose, Tatsunari Satoo, Takeshi Shibuya, Tadashi Okada, Masayuki Kanda, Naoyuki Urata
  • Patent number: 6081683
    Abstract: A color electrophotographic apparatus includes a photosensitive belt arranged obliquely, and a plurality of developing machines arranged on one side of the photosensitive belt in a stacked manner so as to be displaced from one another in a horizontal direction. The photosensitive belt is movable from below to above in a direction opposite to a direction of gravity when in a developing position. The developing machines include a non-magnetic, one component contact developing system having a developing roll for adhering toner on the photosensitive belt and a blade disposed below the developing roll for controlling an amount of toner adhering to the developing roll.
    Type: Grant
    Filed: May 3, 1996
    Date of Patent: June 27, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Toru Miyasaka, Toshiya Satoh, Hiroyuki Tadokoro, Kazuhiro Wakamatsu, Masahiko Saito
  • Patent number: 5761568
    Abstract: An electrophotographic imaging apparatus includes a toner image holding body, a transcription unit for transcribing the toner image on the toner image holding body onto a recording medium, and a conveyor for conveying a recording medium toward the toner image holding body and transcription unit. A judging device will judge whether printing is of a first page or not and if it is decided that printing is to be performed on a first page, a first measuring device will measure the electrical characteristic of the toner image holding body prior to the feeding of a recording medium and a transcription voltage will be set depending of this measured result. Thereafter, the recording medium will be conveyed toward the transcription unit where the electrical characteristics of the non-printing region on the recording medium will be measured via a second measuring device and the transcription voltage will be further adjusted.
    Type: Grant
    Filed: December 27, 1996
    Date of Patent: June 2, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Hideyuki Haragakiuchi, Hiroyuki Tadokoro, Nobuaki Fukasawa, Akira Sasaki, Isamu Terashima, Masashi Yamamoto
  • Patent number: 5729267
    Abstract: Image forming apparatus having a photosensitive drum 1, a charger 2 for uniformly charging the photosensitive drum 1, an exposing means 3 for forming an electro-static latent image on the photosensitive drum 1, an exposing unit 4 for forming a visual image by developing the electro-static latent image, a transfer roller for transferring the visual image to a printing medium 10, which comprises a transfer voltage supply circuit that supplies the transfer roller 5 one or more times with voltage in one polar direction and successively in the other polar direction during an interval after starting of operation of the image forming apparatus and before the time when the printing medium 10 is transported to the transfer roller 5.
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: March 17, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Akira Shimada, Masashi Yamamoto, Hiroyuki Tadokoro
  • Patent number: 5648809
    Abstract: A color printer has means for setting toner image forming areas in the paper sheet convey direction in respect of respective colors, means for detecting a reference position on a photosensitive belt, and image formation start position setting means responsive to the reference position to set a toner image (electrostatic latent image) formation start position in the rotation direction of the photosensitive belt. When the paper sheet length is longer than the outer peripheral length of an intermediate transfer member, the image formation start position setting means sets, for colors other than the final color, a printing area which is shorter than the outer peripheral length of the intermediate transfer member and sets, for the final color, a printing area which begins immediately after a seam position of the photosensitive belt and conforms to the paper sheet length.
    Type: Grant
    Filed: August 16, 1994
    Date of Patent: July 15, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Takeshi Kato, Hiroyuki Tadokoro, Nobuaki Fukasawa
  • Patent number: 5602578
    Abstract: An intermediate transcription drum is supported so as to be driven in contacting relationship with a photosensitive belt. The rotating speed of the photosensitive belt driving motor is controlled by a control unit such that one rotation cycle of the intermediate transcription drum becomes a given cycle. An adjustment of the speed control data for the photosensitive belt driving motor is performed in the interval between electrostatic latent image forming. Thereby, a speed difference between the photosensitive belt and the intermediate transcription drum does not occur, and a plurality of the toner images can be transferred and accurately superposed onto the outer surface of the intermediate transcription drum.
    Type: Grant
    Filed: March 3, 1994
    Date of Patent: February 11, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Michio Sumiyoshi, Akira Sasaki, Hiroyuki Tadokoro, Takeshi Kato, Isamu Terashima, Junichi Matsuno, Masaru Nakano
  • Patent number: 5555074
    Abstract: The disclosure is concerned with an electrophotographic apparatus comprising a toner image supporting member on which a toner image developed on an electrostatic latent image is formed, transferring means for transferring the toner image on said toner image supporting member to a recording medium, conveying means for bringing the recording medium into contact with the image supporting member, a fixing roller and a compression roller in contact with each other to fix the toner image on the recording medium, heating means disposed inside at least one of the fixing roller and the compression roller, wherein there are provided temperature detection means for detecting the surface temperature of the fixing roller and state detection means for detecting the state of the fixing apparatus before starting of the fixing apparatus.
    Type: Grant
    Filed: January 10, 1995
    Date of Patent: September 10, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Hideyuki Haragakiuchi, Hiroyuki Tadokoro, Nobuaki Fukasawa, Isamu Terashima, Akira Sasaki, Kazuyoshi Matsuo, Katuyoshi Onose, Masashi Okuhama
  • Patent number: 5550956
    Abstract: The color printer of the present invention includes a memory for storing latest history information of a print-out means, a controller for judging the worn conditions of expendable members on the basis of the history information and for generating maintenance information image data wherein expendable members which are before the exchange time and expendable members which are after the exchange time are sorted in different colors, and an operator panel for printing the maintenance information image data on a recording medium in color by the print-out means. According to the present invention, maintenance information necessary for performing maintenance and inspection or for exchanging expendable members can be outputted in a color image form which is color-coded quite obviously.
    Type: Grant
    Filed: May 10, 1993
    Date of Patent: August 27, 1996
    Assignee: Hitachi, Ltd.
    Inventor: Hiroyuki Tadokoro
  • Patent number: 5530527
    Abstract: A color electrophtographic printer has: a photosensitive drum on which electrostatic latent images are formed according to print data separated by colors; a plurality of developing units each including a developing powder container accommodating a two component developing powder formed by mixing carriers and toners, an apparatus for agitating the developing powder, and a unit for supplying the toners in the developing powder container; a unit for selecting one of the plurality of developing units according to color to be developed and for activating the same to develope the corresponding electrostatic latent image formed on the photosensitive drum; and a control unit for controlling the respective operations.
    Type: Grant
    Filed: March 30, 1995
    Date of Patent: June 25, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Nobuaki Fukasawa, Hiroyuki Tadokoro, Akira Sasaki, Isamu Terashima
  • Patent number: 5493384
    Abstract: The present invention relates to a desk-top type color electro-photographic apparatus which is easy in use, small in size and light in weight, wherein maintenance such as changing its photosensitive member can be performed by a user and color adjustment is performed with high accuracy of less than 100 .mu.m. Developing units for four colors are placed in a rank, a single endless-belt-shaped photosensitive member being placed below them to form an approximately oval shape, the photosensitive member being touched with a transfer member on its major axis side to transfer each color of images. In addition to this, the photosensitive member is employed a cartridge type for easiness of user's maintenance and constructed such that highly accurate positioning between the body of apparatus and the cartridge can be performed.
    Type: Grant
    Filed: April 14, 1994
    Date of Patent: February 20, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Junichi Matsuno, Masaru Nakano, Tetsuro Akasaki, Tomio Hayano, Shoji Ukei, Hiroyuki Tadokoro
  • Patent number: 5434652
    Abstract: A color electrophtographic printer has a photosensitive drum on which electrostatic latent images are formed according to print data separated by colors; a plurality of developing units each including a developing powder container accommodating a two component developing powder formed by mixing carriers and toners, an apparatus for agitating the developing powder, and a unit for supplying the toners in the developing powder container; a unit for selecting one of the plurality of developing units according to color to be developed and for activating the same to develope the corresponding electrostatic latent image formed on the photosensitive drum; and a control unit for controlling the respective operations.
    Type: Grant
    Filed: November 4, 1993
    Date of Patent: July 18, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Nobuaki Fukasawa, Hiroyuki Tadokoro, Akira Sasaki, Isamu Terashima
  • Patent number: 5425931
    Abstract: A bundle of pitch-based carbon fibers which is composed of 1000 to 100,000 continuous fiber filaments having an average diameter of 4 to 8 .mu.m, a filament tensile strength of at least 3.0 GPa, and a modulus of at least 600 GPa, and also a method for producing a fine diameter pitch-based carbon fiber wherein use is made of a spinning nozzle with a single nozzle plate which has at least 1000 capillary holes, has the capillaries arranged concentrically and circularly in 3 to 20 rows, has the capillaries positioned to be divided into at least two blocks, has a columnar projection protruding at least 20 mm from the surface of the nozzle plate at the center of the nozzle plate, and has capillaries of a diameter of 50 to 110 .mu.m.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: June 20, 1995
    Assignees: Nippon Steel Corporation, Nippon Steel Chemical Co., Ltd.
    Inventors: Yutaka Arai, Ken Kobayashi, Kunio Miura, Hiroyuki Tadokoro, Yasuo Nagata, Kazuhiko Mizuuchi
  • Patent number: 5386223
    Abstract: A method of recording a color image in such a manner that two toner images of different colors are formed on the basis of video signals supplied from an information processor for producing different colors, and the toner images are transferred to a sheet of recording paper so that the toner images overlap each other, is disclosed, in which method video signal portions for forming contiguous toner images of different colors at a recording position are extracted from the video signals, and one of the video signal portions is extended so that the toner image based upon the video signal portion is enlarged in the direction of the boundary between the contiguous toner images based upon the video signal portions, to prevent a gap having the ground color of the recording paper from generating between the contiguous toner images even when one of the contiguous toner images is spaced apart from the other toner image.
    Type: Grant
    Filed: January 14, 1993
    Date of Patent: January 31, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Masahiko Saitoh, Hiroyuki Tadokoro
  • Patent number: 5373354
    Abstract: A color electrophotographic device includes, a color toner image producing device which produces a color toner image on a rotatable photo sensitive drum by forming four toner images thereon; an image transferring device which transfers the color toner image on the photo sensitive drum onto a recording medium; a fixing means which fixes the color toner image on the recording medium; a transferring device which transfers the recording medium; a recording medium selecting and feeding device which selects one of an ordinary paper and a transparent sheet to serve as the recording medium and feeds the selected one to the transferring device; and a control device which controls the operations of the devices referred to above and includes a first and a second control function which are rendered operative when the transparent sheet is selected as the recording medium, wherein the first control function causes the photo sensitive drum to perform one idle rotation before the image transferring device beings to transfer
    Type: Grant
    Filed: August 26, 1992
    Date of Patent: December 13, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Hiroyuki Tadokoro, Isamu Terashima, Kazuhiro Wakamatsu