Patent ID: 7701615

Claim:
An image forming method for forming an image of black by an image forming apparatus which comprises: a latent image forming unit that forms an electrostatic latent image corresponding to each color on an image carrier, in accordance with received image data corresponding to black and a plurality of colors other than black and a predetermined resolution characteristic; a developing unit that adsorbs toner of said each color on the electrostatic latent image formed on said image carrier to develop a toner image; and a transfer unit that transfers the toner adsorbed on said image carrier by said developing unit to a medium to be recorded, comprising the steps of: judging whether or not a density of black is a predetermined value or more, based on said received image data; and when said judgment result shows that the density of black is said predetermined value or more, changing said resolution characteristic to a higher resolution characteristic compared to the resolution characteristic used in a case in which said judgment result shows that the density of black is a value under said predetermined value, wherein said developing unit adsorbs toner corresponding to at least one of said plurality of colors other than black, which toner corresponding to at least one of said plurality of colors other than black is more finely dispersed compared to the toner corresponding to at least one of said plurality of colors other than black before changing to said higher resolution characteristic.