In ExtendScript

Example
var pp = app.printerPresets.itemByName("printer_number1");
var doc = app.open("D:\pub\sample.indd");
doc.printPreferences.pageRange = "1-3,5";
doc.printPreferences.copies = 3;
doc.print(false, pp);

Don't work printPreferences.copies, as a result, only one copy is printed out.