Image reproducing system

An image forming system comprising:

• generating means for generating a pattern signal with a plurality of tonality levels, including halftones, for each of a plurality of color components, wherein said pattern signal is a predetermined signal that corresponds to the signal that would be produced by reading a color test chart;
• reading means for reading an original image and for generating image signals representing the original image so read;
• .gamma.-correction means for .gamma.-correcting the pattern signal generated by said generating means and the image signals generated by reading means in accordance with a .gamma.-correction characteristic;
• image forming means for forming a color image on the basis of the pattern signal and the image signal .gamma.-corrected by said .gamma.-correction means;
• discriminating means for discriminating a reproduction condition of tonality, including halftones, for each color component on the basis of the image of said pattern signal when formed by said image forming means, and for producing a discrimination signal representative thereof;
• and
• control means for controlling the selection of the .gamma.-correction characteristic of said .gamma.-correction means in accordance with the discrimination signal produced by said discrimination means, said control means controlling the selection of the .gamma.-correction characteristic so as to obtain an appropriate reproduction condition of tonality, including halftones, for each color component.

An image forming system comprising:

• generating means for generating a pattern signal with a plurality of tonality levels, including halftones, for each of a plurality of color components, wherein said pattern signal is a predetermined signal that corresponds to the signal that would be produced by reading a color test chart;
• first output means for outputting an image signal;
• second output means for outputting an image signal corresponding to the pattern signal generated by said generating means;
• .gamma.-correction means for .gamma.-correcting image signals output from said first and said second output means in accordance with a .gamma.-correction characteristic;
• image forming means for forming a latent image representing the image output signal .gamma.-corrected by said .gamma.-correction means;
• visualizing means for visualizing the latent image as a visual image;
• reading means for optically reading the image of said visual image visualized by said visualizing means;
• and
• selecting means for selecting the .gamma.-correction characteristic of said .gamma.-correction means in accordance with the result of reading by said reading means, said selecting means selecting, for each color component, a .gamma.-correction characteristic so as to obtain an appropriate tonality of a visual image visualized by said visualizing means.