| 摘要 |
In the reproduction of a colored original red, green and blue filters are used in a photoelectric scanning operation to analyze the color components of the original and corresponding electric signals are generated. To prepare a color printer representing a color which is not complementary to any of the filter colors (for example brown) the primary signals derived by means of the filters are combined in a signal-processing circuit to form further electric signals representing more restricted color ranges. These further signals are used to modify the primary signals so that the modified primary signals are less responsive to those restricted color ranges which are not required for the special color printer. Some at least of the modified primary signals are then combined in a mixer circuit to give a resultant representing the required color printer.
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