My printer was already hooked up to the router and worked with my PC. I ran the Printers/Scanners preferences on my iMac and it found the printer...so it should be all sinked up. However, if I open up a document and select it to print, the "Printing - Copying print data" with the blue/white moving hatch line shows on the screen but nothing prints out. If I go into the "Show Printer Webpage" within the Printers/Scanners window, I can print a self-test page. Any idea as to what I'm missing? Thanks.