| 摘要 |
PROBLEM TO BE SOLVED: To reduce positional deviation in main scanning direction and sub scanning direction of a monitoring region, relating to a reading image that is obtained by reading a recording material that is transported and an original image which is an origin of the reading image.SOLUTION: On a sheet P that is transported along a sub scanning direction, a practical image is formed by using an image formation part 10. The sheet P on which the practical image is formed by the image formation part 10 is read by using an output image reading part 60. A position of a monitoring region set for practical original image data which is the source of the practical image is applied with correction in a main scanning direction and a sub scanning direction by using correction data, to generate a correction monitoring region. From reading image data that is read by the output image reading part 60, monitoring image data present in the correction monitoring region is extracted. |
