Abstract: An x-ray cassette positioner for use with a plurality of x-ray cassettes. The cassette positioner includes first and second conveyors. The conveyors have a first endless cogbelt and a second endless cogbelt, respectively. The cogbelts are spaced apart. The cogbelts each have a plurality of outwardly extending shelves. The conveyors each have a pair of cogwheels, each pair of cogwheels receives a respective cogbelt. The cogbelts each have a utilization segment and a return segment. The shelves of the utilization segment of said first cogbelt face and are in vertical alignment with corresponding shelves of the utilization segment of the second cogbelt. The aligned shelves define a cassette read site and a plurality of cassette loading sites. A positive drive is operatively connected to both conveyors and drives the conveyors in unison to transfer cassettes loaded in the loading sites serially through the loading sites and the read site. A body encases the conveyors.