Patent ID: 8092969

Claim:
A process for forming a full-color image, comprising the following steps: a development step of using 4 color toners of a black toner, a cyan toner, a magenta toner and a yellow toner to develop an electrostatic latent image corresponding to each color on one or more photosensitive members at every color, thereby forming toner images of the respective colors; a transfer step of transferring the toner images of the respective colors to one transfer medium to form a toner image with the 4 color toners superimposed on one another on the transfer medium; and a fixing step of fixing the toner image formed on the transfer medium, wherein the 4 color toners comprise colored resin particles containing a binder resin, a colorant corresponding to each color and a parting agent and have an apparent viscosity at 105° C. of 50,000 to 300,000 Pa·s and an apparent viscosity at 130° C. of 3,000 to 30,000 Pa·s, and wherein as a color toner arranged at the outermost layer of the toner image with the 4 color toners superimposed on one another on the transfer medium among the 4 color toners, a toner, in which a maximum peak or a shoulder peak is present between 105° C. and 130° C. in a temperature-logarithmic melt viscosity graph, is used, and as the other 3 color toners arranged at lower layers than the outermost layer, toners, in which neither the maximum peak nor the shoulder peak is present between 105° C. and 130° C., are used.