Patents by Inventor Masaya Tsugoshi

Masaya Tsugoshi 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).

  • Photosensitive body for electrophotographical use and manufacturing method thereof
    Patent number: 6258500
    Abstract: A photosensitive body for electrophotographical use has a conductive base body and a marking area provided thereon. The maximum surface roughness of a photosensitive layer provided right on the marking area is specified not to exceed 2.5 &mgr;m. And also, a ratio of the optical reflective index of the marking area to the optical reflective index of the non-marking area is specified to be in a range of 0.3 to 0.7. In this manner, even when the photosensitive layer is thin (not exceeding 25 &mgr;m), it is possible to prevent problems such as inadequate cleaning and toner falling. Hence, it is possible to offer a photosensitive body for electrophotographical use which can constantly produce high quality copied images.
    Type: Grant
    Filed: October 27, 2000
    Date of Patent: July 10, 2001
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hideaki Taniguchi, Yasutaka Maeda, Masayuki Sakamoto, Masaya Tsugoshi, Makoto Kurokawa
  • Photosensitive body for electrophotographical use and manufacturing method thereof
    Patent number: 6180300
    Abstract: A photosensitive body for electrophotographical use has a conductive base body and a marking area provided thereon. The maximum surface roughness of a photosensitive layer provided right on the marking area is specified not to exceed 2.5 &mgr;m. And also, a ratio of the optical reflective index of the marking area to the optical reflective index of the non-marking area is specified to be in a range of 0.3 to 0.7. In this manner, even when the photosensitive layer is thin (not exceeding 25 &mgr;m), it is possible to prevent problems such as inadequate cleaning and toner falling. Hence, it is possible to offer a photosensitive body for electrophotographical use which can constantly produce high quality copied images.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: January 30, 2001
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hideaki Taniguchi, Yasutaka Maeda, Masayuki Sakamoto, Masaya Tsugoshi, Makoto Kurokawa
  • Photosensitive body for electrophotographical use and manufacturing method thereof
    Patent number: 6180299
    Abstract: A photosensitive body for electrophotographical use has a conductive base body and a marking area provided thereon. The maximum surface roughness of a photosensitive layer provided right on the marking area is specified not to exceed 2.5 &mgr;m. And also, a ratio of the optical reflective index of the marking area to the optical reflective index of the non-marking area is specified to be in a range of 0.3 to 0.7. In this manner, even when the photosensitive layer is thin (not exceeding 25 &mgr;m), it is possible to prevent problems such as inadequate cleaning and toner falling. Hence, it is possible to offer a photosensitive body for electrophotographical use which can constantly produce high quality copied images.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: January 30, 2001
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hideaki Taniguchi, Yasutaka Maeda, Masayuki Sakamoto, Masaya Tsugoshi, Makoto Kurokawa
  • Photosensitive body for electrophotographical use and manufacturing method thereof
    Patent number: 6033815
    Abstract: A photosensitive body for electrophotographical use has a conductive base body and a marking area provided thereon. The maximum surface roughness of a photosensitive layer provided right on the marking area is specified not to exceed 2.5 .mu.m. And also, a ratio of the optical reflective index of the marking area to the optical reflective index of the non-marking area is specified to be in a range of 0.3 to 0.7. In this manner, even when the photosensitive layer is thin (not exceeding 25 .mu.m), it is possible to prevent problems such as inadequate cleaning and toner falling. Hence, it is possible to offer a photosensitive body for electrophotographical use which can constantly produce high quality copied images.
    Type: Grant
    Filed: March 10, 1998
    Date of Patent: March 7, 2000
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hideaki Taniguchi, Yasutaka Maeda, Masayuki Sakamoto, Masaya Tsugoshi, Makoto Kurokawa
  • Photosensitive body for electrophotographical use and manufacturing method thereof
    Patent number: 5773175
    Abstract: A photosensitive body for electrophotographical use has a conductive base body and a marking area provided thereon. The maximum surface roughness of a photosensitive layer provided right on the marking area is specified not to exceed 2.5 .mu.m. And also, a ratio of the optical reflective index of the marking area to the optical reflective index of the non-marking area is specified to be in a range of 0.3 to 0.7. In this manner, even when the photosensitive layer is thin (not exceeding 25 .mu.m), it is possible to prevent problems such as inadequate cleaning and toner falling. Hence, it is possible to offer a photosensitive body for electrophotographical use which can constantly produce high quality copied images.
    Type: Grant
    Filed: February 28, 1996
    Date of Patent: June 30, 1998
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hideaki Taniguchi, Yasutaka Maeda, Masayuki Sakamoto, Masaya Tsugoshi, Makoto Kurokawa