Adjustable transfer belt unit in an image-forming machine

摘要

A transfer belt unit in an image-forming machine comprising a transfer roller which is disposed being opposed to an image carrier with a transfer belt interposed therebetween and is rotatably supported at both ends by a support member, and a moving means which moves said transfer roller toward said image carrier up to a first position where said transfer belt is pushed onto said image carrier, and moves said transfer roller in a direction opposite to said image carrier up to a second position where said transfer belt is separated away from said image carrier.