Patents by Inventor Seiko Nagamuma

Seiko Nagamuma 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).

  • Clamshell type color image forming apparatus
    Patent number: 5103261
    Abstract: A camshell type photoelectric color image printer includes a photoreceptor for holding a latent image on its surface, a charger for charging the surface of the photoreceptor, a laser writer for forming a latent image on the charged surface of the photoreceptor, plural developers for developing the latent image with color toners, a transfer drum for holding a recording sheet on which the developed latent image is transferred, a cleaner for cleaning residual toner on the photoreceptor, and a cartridge which holds the photoreceptor, the developers, the cleaner and the transfer unit. The developers are located under the photoreceptor, and the cartridge is removable from the color image printer. An upper part of the color image printer is movable relative to the main body of the printer.
    Type: Grant
    Filed: July 17, 1990
    Date of Patent: April 7, 1992
    Assignee: Konica Corporation
    Inventors: Shunji Matsuo, Shizuo Morita, Satoshi Heneda, Masakazu Fukuchi, Seiko Nagamuma, Masahiko Itaya