Patents Assigned to Hitachi Koki
  • Patent number: 4777499
    Abstract: A method and an apparatus for recording an image is disclosed, in which toner is supplied between a conductive recording drum covered with an insulating material and recording electrodes with the forward end thereof with a small gap from the drum and inclined at a great angle upstream of the direction of rotation of the recording drum. A toner carriage force is generated in the toner to flow out downstream by rotation of the recording drum. A permanent magnet is arranged in the recording drum to form a toner chain inclined at a great angle downstream of the recording drum from the forward end of the recording electrodes. The component of the magnetic force of the magnet in the direction of drum movement is balanced with the toner carriage force.
    Type: Grant
    Filed: February 5, 1988
    Date of Patent: October 11, 1988
    Assignees: Hitachi, Ltd., Hitachi Metals, Ltd., Hitachi Koki
    Inventors: Kenji Okuna, Hidefumi Ohtsuka, Sayoko Ohba, Takaomi Nishigaito, Katsumi Muroi, Tsutomu Iimura, Ryoji Kojima