METHOD AND EQUIPMENT TO REPRODUCE FULL-COLOR PICTURE

摘要

PROBLEM TO BE SOLVED: To combine various halftoned color planes into visually pleasant constitution by using the combined number of dots from the color planes at the time of deciding the number and position of the dots of the respective color planes. SOLUTION: Full color yellow signals Y are independently binarized and the respective inputs of cyan and magenta are added 10. A comparator 15 compares the sum of an addition output line 14 with a value 255 and a selector 17 is controlled by the state of binary signals for indicating a compared result on a line 16. The input to the selector 17 from output generators 23 and 26 decides whether or not one of a cyan dot and a magenta dot is to be printed by a color printer 20 or whether or not at least one of the cyan dot and the magenta dot is to be printed by the printer 20. Then, the corrected picture element luminance values of cyan and magenta are compared 40, the state of the binary signals of comparison output is judged and the cyan dot or the magenta dot is placed at a specified picture element position.