Fuser with endless belt supported by rotational member

A fuser to be coupled to an inkjet printer, the fuser comprising:

• an endless belt;
• a heat source to heat the endless belt;
• a pressing roller to press the endless belt to form a heating nip, through which a printing medium is to pass, the pressing roller to rotate the endless belt;
• a pair of supporting members spaced apart from each other in an axial direction of the endless belt;
• and
• a pair of rotational members, each rotational member of the pair of rotational members includes,
• an insertion portion inserted into an inner diameter portion of the endless belt, respectively at two side end portions of the endless belt, and
• a regulator portion extending from the insertion portion at an obtuse angle with the insertion portion, to form a recessed portion between the insertion portion and the regulator portion,
• the pair of rotational members to be rotatably supported by the pair of supporting members and rotated with the endless belt.