Patents by Inventor Masharu Ohkubo

Masharu Ohkubo 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).

  • Image forming method and device for controlling image density
    Patent number: 4219271
    Abstract: Disclosed is an image forming apparatus of a type, in which there is provided first and second electrically chargeable members, a first processing device to form a primary electrostatic latent image on the first chargeable member, a second processing device to form a secondary electrostatic latent image of the second chargeable member in accordance with the primary electrostatic latent image, to develop the secondary electrostatic latent image, and to transfer the thus developed image onto an image transfer material. A detecting device is provided to detect the visible image forming capability of at least one of electrostatic latent images; and, a control device is provided, responsive to the detecting device, to control at least one of the first and second processing devices so as to form a developed image of a predetermined image density.
    Type: Grant
    Filed: March 22, 1978
    Date of Patent: August 26, 1980
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masharu Ohkubo, Yujiro Ando, Toshio Honma, Shuji Murakawa, Katsumi Murakami, Katsushi Furuichi