To reduce the cost by suppressing the increase of the torque at the start of rotation, caused by the endurance for the cost reduction and securing the stable carriage of a heated member P in a heating device, with a second member 25 sliding and moving relative to a first member 20, and a third member 26 abutting against the first member 20 with the second member 25, located in-between for pressurizing and heating the heated P by clasping and carrying the heated member P with a contact part N, formed by the contact of the second member 25 and the third member 26 with each other.

In the heating device, an uneven part is formed for a first member sliding part which corresponds to the contact part N formed by the contact of the second member 25 and the third member 26 with each other.