| 摘要 |
PROBLEM TO BE SOLVED: To reduce trouble and labor related to a calibration by forming a test pattern for comparison with a density of a preliminarily printed reference pattern onto a reference chart. SOLUTION: Test patterns 13a-13d are printed based on calibration data to blank areas 12a-12d of a reference chart 102, and outputted as a test chart 103 from a color printer 101. The test chart 103 is visually observed. One test pattern, e.g. having a closest density to a reference pattern 10a is selected for each of C, M, Y and K colors from 13a-1 to 13a-7 (C). The selection is conducted for each color, and the results are registered to a CPU. A density of the test chart 103 is judged from a registration number. A setting of the color printer 101 is changed when images are to be formed with a density set by reference patterns 10a-10d. |
