Patents Examined by J. Starrett
  • Developing device with toner density adjustment
    Patent number: 4742370
    Abstract: Disclosed is a developing device, which develops an electrostatic latent image by applying a toner thereto. The device is provided with an auto-toner adjuster, which detects the toner content of a developing agent, and resupplies the toner in accordance with the detected value, thereby keeping the toner content constantly at a predetermined value. At the shipment from the factory, the developing device is sealed hermetically, storing the developing agent used in setting the toner content by the toner adjuster.
    Type: Grant
    Filed: November 19, 1986
    Date of Patent: May 3, 1988
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Reiji Murakami, Kozo Matsuyama, Shouji Takano, Kazutaka Takahashi, Koji Yukinaga, Motohiko Tanigawa