| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that since a reference plate for carrying out correction of a light amount of irradiation means is not arranged in between the irradiation means and a conveyed recording medium, the correction of the light amount of the irradiation means can be carried out in only a state with no recording medium.SOLUTION: By arranging an inner surface reference plate between irradiation means and a recording medium, a surface image of the inner surface reference plate can be imaged simultaneously while a surface image of the recording medium is imaged, thereby, a light amount can be suitably corrected even when spacing between sheets is short such as in continuous printing.SELECTED DRAWING: Figure 2 |
