Xerox Profit Rises on Printer Sales  NEW YORK (Reuters) - Xerox Corp. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=XRX.N target=/stocks/quickinfo/fullquote"&gt;XRX.N&lt;/A&gt; on Thursday said  third-quarter net income rose 39 percent as it cut costs and  the sales of its more-profitable color digital printers  improved.