While this problem occurs when the PDF document is displayed in Preview, it does not seem to occur when the same document is viewed through Adobe Reader or any application that does not use the built-in PDF rendering in OS X. From the 'PDF' menu, save the document as a PDF to a desired location and open it in 'Preview' to see the improperly rendered text. Then ensure the font is 'Times New Roman' and italicized then press 'command-P' to bring up the print dialogue. In order to replicate this problem, open a text editor such as 'TextEdit' and type some text.