Image forming apparatus using special toner and performing fixing condition change control

An image forming apparatus comprising:

• an image forming unit containing:
• a color toner comprising at least one of yellow toner, magenta toner, and cyan toner;
• and
• a special toner,
• the image forming unit configured to perform:
• a special image forming operation that forms a composite toner image comprising a color toner image and a special toner image with the color toner and the special toner, respectively, on a recording medium;
• and
• a normal image forming operation that forms the color toner image without forming the special toner image on the recording medium;
• a fixing device configured to fix the color toner image and the special toner image on the recording medium;
• and
• circuitry configured to perform, in the special image forming operation, a fixing condition change control that controls a fixing condition of the fixing device when a total amount of toner in the composite toner image is larger than a total amount of toner in the color toner image formed in the normal image forming operation and is in excess of a specified value.