Javascript for printing form fields only

Howdy everyone!

I am making a PDF form that will allow us to print onto an already printed cardstock form. I need to have the form fields visible while we are filling in the form, but then I only want the form fields to print. I know there is an option to do this in the print menu, but I would like to be able to have a button on the PDF page that allows one click send to the printer. I currently have the below Javascript added to a button that allows the one-click-print, but need to figure out how to add the "print form fields only" as a Javascript...any ideas? Is this possible?

var pp = this.getPrintParams();pp.interactive = pp.constants.interactionLevel.automatic;pp.printerName = "THIS IS THE PRINTER NAME";this.print(pp);