Returns or sets the duplex copying mode. Duplex printing is when printing occurs on both sides of a sheet of media. Long edge binding is also called vertical binding or book binding. Short edge binding is also called horizontal binding or calendar binding. eSimplexToSimplex: takes image data from only one side of the original document, and print only on one side of each copy. eSimplexToDuplexLongEdgeBinding: takes image data from only one side of the original document, and print to both sides of each copy. The images are rotated so that if the media is rotated along the axis of the long edge of the media, both images would appear as in the original. eSimplexToDuplexShortEdgeBinding: takes image data from only one side of the original document, and print to both sides of each copy. The images are rotated so that if the media is rotated along the axis of the short edge of the media, both images would appear as in the original. eDuplexToDuplex: takes image data from both sides of the original document, and print on both sides of each copy. eDuplexToSimplexLongEdgeBinding: takes image data from both sides of the original document, and prints to only one side of each copy. The images are rotated so that if the media is rotated along the axis of the long edge of the media, both images would appear as in the original. eDuplexToSimplexShortEdgeBinding: takes image data from both sides of the original document, and prints to only one side of each copy. The images are rotated so that if the media is rotated along the axis of the short edge of the media, both images would appear as in the original. Additional information: Returns or sets the duplex copying mode. Duplex printing is when printing occurs on both sides of a sheet of media. Long edge binding is also called vertical binding or book binding. Short edge binding is also called horizontal binding or calendar binding. eSimplexToSimplex: takes image data from only one side of the original document, and print only on one side of each copy. eSimplexToDuplexLongEdgeBinding: takes image data from only one side of the original document, and print to both sides of each copy. The images are rotated so that if the media is rotated along the axis of the long edge of the media, both images would appear as in the original. eSimplexToDuplexShortEdgeBinding: takes image data from only one side of the original document, and print to both sides of each copy. The images are rotated so that if the media is rotated along the axis of the short edge of the media, both images would appear as in the original. eDuplexToDuplex: takes image data from both sides of the original document, and print on both sides of each copy. eDuplexToSimplexLongEdgeBinding: takes image data from both sides of the original document, and prints to only one side of each copy. The images are rotated so that if the media is rotated along the axis of the long edge of the media, both images would appear as in the original. eDuplexToSimplexShortEdgeBinding: takes image data from both sides of the original document, and prints to only one side of each copy. The images are rotated so that if the media is rotated along the axis of the short edge of the media, both images would appear as in the original. If duplex print has been disabled the object will return an error for pmlsets on eSimplexToDuplexLongEdgeBinding(2) and eDuplexToDuplex(4). If duplex scan has been disabled it will return an error for pmlsets on eDuplexToDuplex(4) and eDuplexToSimplexLongEdgeBinding(5).If the device has both disabled or the features is are present, such as on a kiwi, both pmlsets and pmlgets will return an error for all enumerations.