| 摘要 |
PROBLEM TO BE SOLVED: To enable satisfactory images to be formed.SOLUTION: A color printer 1 comprises a conveyor belt 8 on which a double-layered part 34M differing in optical reflection characteristics from the surface therearound is formed, a light emission drive 62 that performs detecting operation by irradiating the conveyor belt 8 with radiation light SI and detecting reflected light SR, a concentration sensor 64, a concentration detector 71, and a control unit 50 that performs the current detecting operation, performs the next detecting operation after running the conveyor belt 8 over a longer distance than the length of the double-layered part 34M in the running direction of the conveyor belt 8, and makes corrections regarding image formation on the basis of the results of detection from the current detecting operation and the next detecting operation. |
