Color image forming process and color toner set

A color image forming process comprising:

• forming an electrostatic latent image on a photosensitive body;
• developing the electrostatic latent image with colorant-containing toners of multiple colors on the photosensitive body to form a toner image on the photosensitive body, the toners containing colorants respectively having different resistances;
• transferring the toner image from the photosensitive body to an image substrate;
• and
• fixing the toner image on the image substrate with heat and pressure to form a color image on the image substrate,
• wherein each of the colorant-containing toners contains an amorphous resin, a crystalline polyester resin, and a mold release agent,
• at least the crystalline polyester resin contained in the colorant-containing toner other than the colorant-containing toner containing a colorant having the lowest resistance comprises a hybrid crystalline polyester resin formed by bonding a crystalline polyester polymerized segment and an amorphous polymerized segment, the amorphous polymerized segment being a styrene-acrylic polymerized segment, and
• the content of the amorphous polymerized segment in the hybrid crystalline polyester resin contained in the colorant-containing toner other than the colorant-containing toner containing a colorant having the lowest resistance is greater than the content of the amorphous polymerized segment in the crystalline polyester resin contained in the colorant-containing toner containing a colorant having the lowest resistance.