Patents by Inventor Chise Nishiwaki

Chise Nishiwaki 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).

  • Method of driving a droplet jetting head
    Patent number: 7334880
    Abstract: A method of driving a droplet jetting head comprising nozzle orifices to jet droplets, pressure generating chambers each of which can store liquid and communicate with one of the orifices, and pressurizing devices to change the pressures of the pressure generating chambers, comprising the steps of increasing the pressure in the pressure generating chamber by the pressurizing device and protruding liquid in the pressure generating chamber from the nozzle orifice as a droplet, and separating the liquid which protrudes from the nozzle orifice when ?/? is equal to or less than 1/3 where ?(?m) is the diameter (in micrometers) of an liquid pillar (protruded from the nozzle orifice) at the front end of the nozzle orifice and ?(?m) is the maximum diameter (in micrometers) of the liquid pillar.
    Type: Grant
    Filed: September 21, 2004
    Date of Patent: February 26, 2008
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Chise Nishiwaki, Kazuo Asano, Shozo Kikukawa
  • Method of driving a droplet jetting head
    Publication number: 20050068353
    Abstract: A method of driving a droplet jetting head comprising nozzle orifices to jet droplets, pressure generating chambers each of which can store liquid and communicate with one of the orifices, and pressurizing devices to change the pressures of the pressure generating chambers, comprising the steps of increasing the pressure in the pressure generating chamber by the pressurizing device and protruding liquid in the pressure generating chamber from the nozzle orifice as a droplet, and separating the liquid which protrudes from the nozzle orifice when ?/? is equal to or less than 1/3 where ?(?m) is the diameter (in micrometers) of an liquid pillar (protruded from the nozzle orifice) at the front end of the nozzle orifice and ?(?m) is the maximum diameter (in micrometers) of the liquid pillar.
    Type: Application
    Filed: September 21, 2004
    Publication date: March 31, 2005
    Inventors: Chise Nishiwaki, Kazuo Asano, Shozo Kikukawa