Patent ID: 8483586

Claim:
An image forming apparatus comprising: a charging unit; an image carrier charged by the charging unit; an exposing unit that projects light corresponding to an image to be printed to the image carrier to form a latent image; a developing unit that forms a toner image of the latent image formed by the exposing unit and transfers the toner image to a transfer material fed from a feed tray; a transfer belt on which the transfer material is placed, and that feeds the transfer material to the developing unit to transfer the toner image; a fixing unit that fixes the toner image transferred onto the transfer material; a cleaning unit that cleans up toner attached to the fixing unit; and a control unit that controls printing of the image on the transfer material, wherein the control unit causes the exposing unit to expose a latent image of a first image having an image-area ratio equal to or larger than a predetermined ratio, causes the developing unit to form a toner image of the latent image and to transfer the toner image to the transfer material, and causes the fixing unit to fix the toner image transferred by the transfer belt onto the transfer material, wherein: the image is expressed in a raster format, and the image forming apparatus further includes: an input receiving unit that receives operation input for instructing printing of a second image from a user; and a detecting unit that detects toner density of the toner image transferred onto the transfer material by using the second image, wherein when deviated toner density is detected, the control unit displays a message for instructing to print the first image.