Patent ID: 8472844

Claim:
A drive mechanism for an image forming apparatus comprising: a first resin cover having a first concave part opening toward a first face; a second resin cover having a second concave part opening toward the first resin cover, and disposed such that a periphery of the second concave part is aligned to come into contact with a periphery of the first concave part; a housing part including the first concave part and the second concave part; a first sheet metal member disposed inside the housing part; a first rotation transmission wheel group having at least one first rotation transmission wheel, housed by the housing part and disposed on the first sheet metal member on a side directed to the first resin cover; a second rotation transmission wheel group housed by the housing part and disposed on the first sheet metal member on a side directed to the second resin cover; a second sheet metal member that is disposed on the first resin cover on a side opposite to the second resin cover and disposed opposite to the first sheet metal member interposing the first resin cover therebetween; at least one positioning part that is formed like a through hole in the first sheet metal member rotatably supporting the at least one first rotation transmission wheel; and at least one pin member that is installed on the second sheet metal member on a side directed to the first sheet metal member, each pin member being inserted into each positioning part via the first resin cover such that each pin member is positioned.