Fixing device

A fixing device comprising:

• an endless belt configured to apply heat to a recording material;
• a rotatable pressing member contacting an outer circumferential surface of the belt;
• a pad member inside of the belt, configured to form a nip portion by nipping and feeding the belt between itself and the rotatable pressing member;
• and
• a sliding member held by the pad member and configured to slide on an inner circumferential surface of the belt in the nip portion,
• wherein the rotatable pressing member nips and feeds the recording material in the nip portion in cooperation with the belt and fixes a toner image on the recording material by applying heat and pressure,
• wherein the sliding member includes a base material layer on which a plurality of projections projecting toward the rotatable pressing member are formed on a side sliding with the belt and a sliding layer provided on an outer surface of the plurality of projections, and
• wherein a leading end of the plurality of projections is a plane and an average roughness (Ra) of the plane satisfies 0.13 μm≤Ra≤1.67 μm.