| 摘要 |
PROBLEM TO BE SOLVED: To provide a color image forming device capable of outputting a high-quality image without displacements by adjusting an absolute scaling factor of each color. SOLUTION: A counter circuit starts counting by inputting a count starting signal, and makes a count between two sensors (S21). After the termination of a measurement, a main CPU performs the computation of a correction quantity so that a count value latched by a latch circuit can be taken in to coincide with a reference count value (S22). The absolute scaling factor is corrected on the basis of the computed correction quantity (S23). After that, a relative scaling factor is corrected. The correction of the relative scaling factor makes a mark (a toner pattern) formed on a transfer conveyance belt so as to detect the formed pattern (S24). In addition, the computation of the correction quantity is performed according to the result of the detection of the pattern (S25), and the relative scaling factor is corrected on the basis of the correction quantity (S26). |
