See it at ... http://www.rawstory.com/rs/2010/11/federal-reserve-print-billions-dollars-massive-shadow-stimulus/
That article is using some economic slang. “Printing money” is shorthand for what the Fed does. The author either assumes that you are familiar with Open Market operations or he doesn’t know himself.
When the Fed buys or sells Treasuries it is all done by electronic entry. There is no currency involved. What the Fed is doing is replacing illiquid T-bills on a bank’s books with liquid money. The plan is to get banks to make loans. Banks can’t loan the T-bills, they can loan the money. Critics of quantitative easing don’t think the plan is going to work, that it’s going to cause more asset bubbles, devalue the dollar, and make interest rates rise.