<script defer>
　　function SetPrintSettings() {
　　// -- advanced features
　　factory.printing.SetMarginMeasure(2) // measure margins in inches
　　factory.SetPageRange(false, 1, 3) // need pages from 1 to 3
　　factory.printing.printer = "HP DeskJet 870C"
　　factory.printing.copies = 2
　　factory.printing.collate = true
　　factory.printing.paperSize = "A4"
　　factory.printing.paperSource = "Manual feed"

　　// -- basic features
　　factory.printing.header = "This is MeadCo"
　　factory.printing.footer = "Advanced Printing by ScriptX"
　　factory.printing.portrait = false
　　factory.printing.leftMargin = 1.0
　　factory.printing.topMargin = 1.0
　　factory.printing.rightMargin = 1.0
　　factory.printing.bottomMargin = 1.0
　　}
　　</script>
以上代码在我的程序中找不到“factory”对象，请问大虾是怎么回事？