Image forming apparatus

An image forming apparatus comprising:

• an image bearer configured to bear an image on a surface of the image bearer;
• a protectant applicator configured to apply protectant to the surface of the image bearer;
• a heating device including a heater,
• the heater including:
• a base;
• a heat generator;
• an electrode;
• and
• a conductor coupling the heat generator to the electrode, the heater configured to have a first position and a second position being symmetrical to each other with respect to a center of a heat generation area of the heater in a longitudinal direction of the heater,
• wherein a sum of squares of currents passing through the second position is larger than a sum of squares of currents passing through the first position;
• a first biasing member disposed at a position closer to the first position than the second position and configured to bias the protectant to the protectant applicator in a direction orthogonal to the axial direction of the protectant applicator with a biasing force;
• and
• a second biasing member disposed at a position closer to the second position than the first position and configured to bias the protectant to the protectant applicator in a direction orthogonal to the axial direction of the protectant applicator with a second biasing force larger than the first biasing force.