Patents by Inventor Katsumi Nagata

Katsumi Nagata 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).

  • Patent number: 4914525
    Abstract: An image processing machine functions both as a facsimile machine and as an ordinary copying machine. The image processing machine is provided with a document scanning system and image-forming system. The document scanning system comprises a first scanning zone, a second scanning zone an image-receiving system, an optical system for optically connecting the first scanning zone and the second scanning zone to the image-receiving system, a first document scan moving system for moving a document across the first scanning zone and a second document scan moving system for moving a document across the second scanning zone. The image-forming system comprises printing system with a print output zone and a system for conveying a printing substrate through the printing output zone. An ink ribbon cartridge in the image forming system has a detector for detecting a broken ink ribbon.
    Type: Grant
    Filed: May 11, 1988
    Date of Patent: April 3, 1990
    Assignee: Mita Industrial Co., Ltd.
    Inventors: Yuji Abe, Kenji Sakaue, Masahiro Hashizume, Taiichi Jinno, Kazuo Nakamura, Katsumi Nagata
  • Patent number: 4659214
    Abstract: A document detecting apparatus for a copying machine, comprising a photo-sensor having a light projecting device which emits a measuring light from an inside of to an outside of a copying machine through an original glass plate, and a light receiving device which is installed at a position deviated from a path symmetric to an optical axis of said measuring light with respect to a normal line set up on a surface of the original glass plate and which is directed to receive a scattered light produced from the measuring light scattered at a surface of an original document placed on the original glass plate; and a microprocessor which judges whether or not the original document exists according to an intensity of a light measured by said photo-sensor.
    Type: Grant
    Filed: February 14, 1986
    Date of Patent: April 21, 1987
    Assignee: Mita Industrial Co., Ltd.
    Inventors: Yoshinobu Takemura, Masuo Kawamoto, Masahiro Hashizume, Katsumi Nagata