A thermal development apparatus capable of preventing thermal development failure
because of improvement on a characteristic required of a resilient member. The
thermal development apparatus has: a heating section for heating thermal development
photosensitive material within which a latent image is established, and maintaining
temperature of the thermal development photosensitive material at thermal development
temperature; and a conveyance section for conveying the thermal development photosensitive
material with the heating section, wherein the heating section has a cylindrical
sleeve, a heat source provided inside of the cylindrical sleeve, and a resilient
member on an external surface of the cylindrical sleeve, and the resilient member
has a smooth layer as an outermost layer thereof.
