| 摘要 |
<P>PROBLEM TO BE SOLVED: To secure the accuracy of displacement correction. <P>SOLUTION: An image forming device comprises: an image forming unit for forming a plurality of marks 70 at intervals on a carrier; a mark sensor having a light projection unit for irradiating the carrier with light and a first light receiving unit for receiving diffuse reflection light of light irradiated from the light projection unit onto the carrier and outputting a light receiving signal corresponding to the light receiving amount; a moving unit for moving the carrier with respect to the mark sensor; a lighting control unit for turning on the light projection unit when portions where the marks 70 are formed on the carrier cross an optical path of the light irradiated from the light projection unit, and temporarily turning off the light projection unit when the portions between the marks 70 on the carrier cross the optical path; and a correction unit for measuring positions of the marks on the basis of the light receiving signal and correcting the displacement of image forming position on the basis of the measurement result. <P>COPYRIGHT: (C)2013,JPO&INPIT |
