Duplex Batch Printing

I frequently get requests for large numbers of .pdf files to be printed double-sided.

It's easy enough to open each document and print it double sided, but if I want to send a batch of documents to a printer, there's a problem. The most efficient way for us to print a long run of documents is to use Acrobat's batch processing feature, which allows me to have Acrobat run a command or series of commands (the print command, in this case) on all the documents in a given directory. So what I would do is open the "set printer properties" menu for the appropriate printer from the "Start" menu, set the printer to duplex, and then run the batch in Acrobat. The problem is that, when using the batch processing feature, the printer properties appear to reset after the first document is printed, returning to single-sided printing. If I check the printer properties, the duplex option is still selected (there's a check in the appropriate checkbox), but only the first document is printed double-sided.

Is there a way around this? I’d like to use Acrobat’s batch processing feature to send a large number of documents to a printer and have them print double-sided (i.e., duplex), but I can’t figure out how to do it.

Thanks for your help.