| 摘要 |
PROBLEM TO BE SOLVED: To perform the correction control for image forming conditions with good accuracy.SOLUTION: For a patch image whose ratio covered by toner is under a predetermined value, a measured value of the patch image is compared with a target value obtained by adding an offset value to a first reference value, and for a patch image whose ratio covered by toner is a predetermined value or more, a measured value of the patch image is compared with a target value obtained by adding an offset value to a second reference value. The correction control is performed based on these comparison results. |
