Patent ID: 8358944

Claim:
An image forming apparatus for forming a toner image of an image-formation object image, the apparatus comprising: an image forming section, the image forming section including: a photoreceptor drum; a writing unit for forming an electrostatic latent image on the photoreceptor drum; and a development device configured to supply toner to the photoreceptor drum to develop the electrostatic latent image into the toner image, wherein the image forming apparatus is configured to be loaded, as the toner, with the following toner: first cyan toner, first magenta toner, and first yellow toner which constitute a first toner group; second cyan toner, second magenta toner, and second yellow toner which constitute a second toner group which has a wider color reproduction area than the first toner group; and black toner; and a control section configured to convert data of respective image portions constituting the image-formation object image into values in a predetermined color space, and select only one of the first toner group and the second toner group to use to form the toner image of the image-formation object image, depending on the values converted in the predetermined color space.