1. An image forming apparatus comprising: a latent image forming unit configured to form a latent image by irradiating an image carrier, which rotates or moves, with a light beam according to image information; a conveying unit configured to convey and circulate two-component developer containing toner and carrier in a conveying path; a toner supplying unit configured to supply toner to the two-component developer at a predetermined supply point in the conveying path; a developing unit that develops the latent image formed on the image carrier with the two-component developer; an acquiring unit that acquires the image information in units of divided image information obtained by dividing the image information at least in one of a main-scanning direction and a sub-scanning direction; and a supply control unit that calculates, based on the image information acquired by the acquiring unit, basic-supply patterns of a supply amount of toner in units of the divided image information and controls the supply amount of toner at the supply point using a toner supply pattern combined with calculated basic-supply patterns, the basic-supply patterns eliminating temporal variation in toner density of the two-component developer at a specific point in the conveying path due to development of the latent image according to the image information acquired by the acquiring unit.