Don't neglect to check your toner as well, as when it runs low, this could also be a reason for your printer to start printing blank pages. Toner is not the same as ink, so check both.

What Causes a Printer to Print Blank Copies?. Running a profitable business takes careful cost containment. When you examine a printed presentation, reference document or other business content ...

However, some Word users have reported that the printer prints blank pages whenever they try to print a mail merge document (envelope, letter, etc.).