1. An image forming apparatus comprising: image information obtaining means for obtaining information of an image on a document; image forming means for forming an image on a recording material in accordance with the information obtained by said image information obtaining means; glossiness detection means for detecting a level of glossiness of the image on the document; and control means for controlling said image forming means in accordance with the level of glossiness detected by said glossiness detection means; and wherein said image information obtaining means and said glossiness detection means scan the whole of the document substantially concurrently.