US Patent 7889388 Image forming apparatus and image processing method

An image forming apparatus with a saving mode in which imaging materials to be used are reduced, includes: an image processing part that converts image data from which an image will be formed into corresponding image data in an output color space; and an image forming part that forms the image from the image data converted by the image processing part, using the imaging materials, the image processing part reducing a color component of non-dominant (n+m)-component color mixed into a dominant n-component color in the image data converted, where n and m are integers of 1 or greater.