Roller and method of manufacturing the roller

A roller, comprising:

• a roller body made of hard synthetic resin and having a substantially disc-like shape;
• an annular shock absorbing member made of a rubber-like elastic material and integrally formed on an outer peripheral portion of said roller body, and
• a single flange-like portion protruding radially outward from said roller body and being formed on the outer peripheral portion of said roller body, said single flange-like portion being disposed on only one side of said annular shock absorbing member, and said annular shock absorbing member being in contact with said single flange-like portion only at the one side of said annular shock absorbing member,
• wherein said shock absorbing member is integrally formed on the outer peripheral portion of said roller body so as to protrude radially outward by a predetermined amount from said single flange-like portion, said single flange-like portion is the only flange-like portion contacting said shock absorbing member, said single flange-like portion and said one side of said shock absorbing member are integrally formed with one another, and the outer peripheral portion of said roller body and an inner peripheral surface of said shock absorbing member are integrally formed with one another.