Patents Examined by Madeleline A V Nguyen
  • Patent number: 7274490
    Abstract: In an image forming apparatus which forms a color image by superposing cyan, magenta, yellow and black toners on a recording medium, a circuit to limit image signals is provided immediately before a gamma correction circuit which corrects an output characteristic inherent in the apparatus so that the sum total of the signal levels of the image signals of the respective colors does not exceeds a predetermined value. Thus, even if a user arbitrarily sets color profile data for color management, a toner spread amount can be controlled not to exceed the predetermined value.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: September 25, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventor: Nobuatsu Sasanuma