Maybe i dont understand correctly but couldnt you put a Link next to each entry that holds that orders OrderID(Unique DB identifier) and when clicked it goes to a Print page that calls that orders data from the DB based on that unique ID and then dsiplays this data and prints out that data using some javascript.
example:
Print 1st Name Last name Address Etc...
----------|------------|---------------|---------------|--------------|
Print John Doe Blah Street
----------|------------|---------------|---------------|--------------|
Print Jack Butler 123 sdfsdff
----------|------------|---------------|---------------|--------------|
Then when the user clicks the print link it passes the OrderID or whatever to the next page that then pulls that orders data from the DB...
You may be already dong that and i just dont understand the question... But i use that alot and my clients seem to like it.