Patents by Inventor Syusaku Yoshida

Syusaku Yoshida 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).

  • Two superimposed ion current formed images using photoconductive screen gives wider potential range for gradation control in electrophotography
    Patent number: 4287278
    Abstract: A method for forming an electrostatic latent image on an image recording medium includes forming a primary electrostatic latent image on a screen-type photosensitive plate, forming a secondary electrostatic latent image on the image recording material by irradiating the same with a charged particle current passed through the screen-type plate carrying the primary latent image, and correcting the secondary latent image on the recording material by irradiating the same with a charged particle current passed through the screen-type plate carrying the primary latent image.
    Type: Grant
    Filed: March 21, 1980
    Date of Patent: September 1, 1981
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Tatsuo Ohta, Sohji Shinozaki, Syusaku Yoshida, Hideo Ohba