| 摘要 |
An image forming apparatus is provided. The image forming apparatus includes: a formation unit configured to form marks for measurement of a positional deviation on a relatively moving object; an optical sensor having a detection region on the object, and configured to output a light receiving signal depending on existence of the marks within the detection region; a removing unit configured to perform a noise removing process, including a first noise removing process and a second noise removing process which use different removing methods for removing noises included in the light receiving signal so as to generate a noise removing result; and a measurement unit configured to measure a positional deviation amount of image formed by the formation unit, based on the noise removing result. |
