Patents by Inventor Yuuji Kurazono

Yuuji Kurazono 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).

  • Image forming apparatus having driving means at each end of array and power feeding substrate outside head housing
    Patent number: 5600363
    Abstract: An optical print head in an image forming apparatus includes linearly arranged blocks and integrated circuits for driving disposed at one or both ends of the line of blocks. Each of the blocks includes a plurality of light emitting diodes. Positionally corresponding light emitting diodes in each block are connected to one of a plurality of meandering individual signal lines which are connected to the integrated circuits and each block is further connected to a corresponding common signal electrode to which power is selectively applied, thereby making possible illumination and drive of light emitting diodes in each block. The head may include a housing containing the blocks, individual signal lines and common signal electrodes and further include a flexible substrate located outside of the housing connected to and supplying power to the common signal electrodes.
    Type: Grant
    Filed: November 3, 1993
    Date of Patent: February 4, 1997
    Assignee: Kyocera Corporation
    Inventors: Toshihiro Anzaki, Yasuo Nishiguchi, Moriyuki Arai, Shunji Murano, Sadayuki Orito, Yuuji Kurazono
  • Optical printer head
    Patent number: 5300954
    Abstract: A light emitting region of light emitting elements is so configured as to extend in an elongated fashion along the direction of movement of a photosensitive drum to prevent the area of exposure in the direction of movement of the drum from becoming unreasonably small. The width of the light emitting region of the light emitting elements is reduced to restrain unreasonable expanse of emitted light beams. Further, arrangement is made to provide greater current density thereby to obtain increased light intensity, and the distribution of current is equalized to provide uniform light brightness. Through development of finer and more intense light beams in this way, it is possible to inhibit unreasonable expanse of light beams thereby to enable each single light emitting diode to provide sufficient exposure intensity. Thus, the width of continuously printed lines, the width of intermittently printed lines, and the diameter of each dot in one dot printing can be substantially equalized.
    Type: Grant
    Filed: November 29, 1990
    Date of Patent: April 5, 1994
    Assignee: Kyocera Corporation
    Inventors: Shunji Murano, Yuuji Kurazono
  • Image forming apparatus with driving circuit elements at ends of an LED array simultaneously transmitting supplied data in opposing directions and simultaneously driving the same block of LEDs
    Patent number: 5272490
    Abstract: In a light emitting diode printing head provided with a plurality of LED arrays on which a plurality of LEDs are formed, a prior art driving circuit element is connected to each LED array. One or a plurality of driving circuit elements is disposed at least one end of the plurality of LED arrays, each LED array is sequentially connected by snaky individual signal lines, and the transmitting direction of printing data into a driving circuit element is alternately changed between one direction and another, inverted direction.
    Type: Grant
    Filed: October 30, 1990
    Date of Patent: December 21, 1993
    Assignee: Kyocera Corporation
    Inventors: Shunji Murano, Yuuji Kurazono, Toshihiro Anzaki