Printing roller

The utility model discloses a printing roller, and belongs to the technical field of printing rollers. The printing roller body comprises an inner roller body located at the axis of the printing roller body, a heating layer connected to the outer surface of the inner roller body in an attached mode, a buffer layer wrapping the outer surface of the heating layer and an outer wrapping rubber layer connected to the outer surface of the heating layer in a sleeving mode. Second fixing rings are connected to the two ends of the inner roller body, fixing cylinders are arranged on the outer sides of the second fixing rings, movable rods are slidably connected into end openings of the opening ends of the fixing cylinders, and one ends of the movable rods extend to the outer portions of the fixing cylinders and are connected with first fixing rings. A plurality of connecting lugs are integrally formed on the outer wall of the first fixing ring and the outer wall of the second fixing ring in an injection molding mode, a