Printing services firm RR Donnelley & Sons Co has agreed to acquire Bowne & Co Inc, which helps companies print regulatory filings, for $481 million.

RR Donnelley, which prints everything from magazines and catalogs to financial reports and newspaper inserts, offered $11.50 a share -- 65 percent more than Bowne's closing price on Tuesday.

The deal would help expand RR Donnelly's product portfolio and add Bowne's customers to the fold, the companies said in a joint statement late Tuesday.

The acquisition is expected to add to RR Donnelley's earnings in the first year after its completion, which is likely in the second half of 2010.

New York-based Bowne helps businesses produce and manage their shareholder, investor, marketing and business communications.

In May 2209, RR Donnelley had offered to buy the assets and properties of Quebecor World IQW.TO for about $1.5 billion but was rebuffed by the Canadian company. Last month, privately held U.S. commercial printing company Quad/Graphics Inc acquired Quebecor World, which is now known as World Color Press (WC.TO) after emerging from bankruptcy protection in mid-2009.