| 主权项 |
1. An image forming apparatus, comprising:
an image forming device which forms an image on a sheet based on image data; a gradation adjustment mark adder which adds gradation adjustment mark information to the image data so that a gradation adjustment mark is formed in addition to the image based on the image data; and a hardware processor which monitors and adjusts a gradation characteristic based on a result of scanning the gradation adjustment mark, in which a scanning section which reads the image formed on the sheet scans the gradation adjustment mark, wherein the hardware processor makes a determination as to whether to form the gradation adjustment mark overlapping an image area of the image based on the image data, and if it is determined to form the gradation adjustment mark overlapping the image area, the hardware processor controls the gradation adjustment mark adder to add the gradation adjustment mark information to the image data in the image area. |
