Patents by Inventor Shengnan HUA

Shengnan HUA 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).

  • Makeup fluid and inkjet printer apparatus
    Patent number: 10843477
    Abstract: A makeup fluid is added to an ink liquid of an inkjet printer to reduce the viscosity of the ink liquid, the makeup fluid including a fluorescent color material in a solvent. An inkjet printer apparatus employing a makeup fluid is provided with a makeup fluid tank to which a light-emitting element and a light-receiving element are attached, and detects the presence or absence of the makeup fluid by irradiating ultraviolet light from the light-emitting element, causing visible light to be emitted from the fluorescent color material in the makeup fluid, and detecting the visible light with the light-receiving element.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: November 24, 2020
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Takuya Otowa, Masahiko Ogino, Hiroshi Sasaki, Takahiro Arima, Keisuke Nagai, Hiromichi Takeyama, Shengnan Hua
  • Makeup Fluid and Inkjet Printer Apparatus
    Publication number: 20180304639
    Abstract: A makeup fluid is added to an ink liquid of an inkjet printer to reduce the viscosity of the ink liquid, the makeup fluid including a fluorescent color material in a solvent. An inkjet printer apparatus employing a makeup fluid is provided with a makeup fluid tank to which a light-emitting element and a light-receiving element are attached, and detects the presence or absence of the makeup fluid by irradiating ultraviolet light from the light-emitting element, causing visible light to be emitted from the fluorescent color material in the makeup fluid, and detecting the visible light with the light-receiving element.
    Type: Application
    Filed: June 3, 2016
    Publication date: October 25, 2018
    Inventors: Takuya OTOWA, Masahiko OGINO, Hiroshi SASAKI, Takahiro ARIMA, Keisuke NAGAI, Hiromichi TAKEYAMA, Shengnan HUA