To obtain a color toner image showing high scuff resistance or wear and abrasion resistance and having high glossiness and light stability by attaching composition including a polymer material having scratch resistance and optical discoloring preventing agent to a receiver.

Mixture 49 of transparent toner or hydrophobic polymer resin particles and light stability material, carrier particles and other appropriate additive are altogether put in a developer unit 40. The developer unit 40 is set as the first unit or the last unit to attach some inclusion to the receiver. In any case, the mixture 49 of the transparent hydrophobic toner resin and the light stability material provides the scuff or scratch resistance to an image on base material and protects the color image from ultraviolet rays. Furthermore, since the transparent toner is used, the glossiness characteristic of the final image is improved. In such a case, in the midst of developing the electrostatic latent image, only one developer unit is located at an acting position, and the rest of the developing units are located at a non-acting position.