Xerox_printers

     +---------------------------+---------+
     | Sides Values              |  valid  |
     +---------------------------+---------+
     | 1, ONE, ONE_SIDED_SIMPLEX |    X    |
     +---------------------------+---------+
     | 2, TWO, TWO_SIDED_DUPLEX  |    X*   |
     +---------------------------+---------+
     | TUMBLE, TWO_SIDED_TUMBLE  |    X*   |
     +---------------------------+---------+
     | ONE_SIDED_DUPLEX          |    X    |
     +---------------------------+---------+
     | ONE_SIDED_TUMBLE          |         |
     +---------------------------+---------+
     | TWO_SIDED_SIMPLEX         |    X*   |
     +---------------------------+---------+

      * Only if printer has the duplex option installed