| 摘要 |
The present invention relates to an image forming apparatus comprising: an image forming portion which forms an image on a sheet; sheet conveyance means for conveying the sheet on which the image is formed by the image forming portion; image density detection means for detecting density of the image formed on the sheet conveyed by the sheet conveyance means; and control means for performing density adjustment of the image formed on the sheet using detection information of the image density detection means. The image forming portion can form a test pattern image on the sheet, the test pattern image having a reference image formed in a predetermined density, and the image forming portion forms the test pattern on the sheet such that the reference image is not formed at positions in the sheet, the positions are located at the same distances away from a front end of the sheet in a conveyance direction as distances between the image density detection means and points where entry shock of the sheet front-end is generated, in the sheet conveyance path on the downstream side of the image density detection means.
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