| 摘要 |
PROBLEM TO BE SOLVED: To make transferable and fixable an image in a more proper part of paper and to make highly precisely formable the image on the paper, by calculating a change in the state of the paper between a first speckle pattern detection means and a second speckle pattern detection means and correcting, based on the change in state, the state of the image to be formed onto an image carrier and transferred onto the paper. SOLUTION: A front detection light source 31 and a front optical sensor 32 and a back detection light source 33 and a back optical sensor 34 are provided on the path along which transfer paper Pa is carried and in different positions in the direction in which the transfer paper Pa is carried. A paper elongation quantitative calculating means 45 calculates a change in the state of the transfer paper Pa between the front detection light source 31 and front optical sensor 32 and the back detection light source 33 and back optical sensor 34. Based on the change in the state of the paper, an image data correction quantitative calculating mean 46 calculates a quantity of the correction of image data, and the image data correcting means 48 corrects the image data based on the quantity of the correction of the image data. |
