Spreadsheet Printing

I have several spreadsheets that I use in my business. Up until last week, no problems. I have not changed anything. Now it will print 4 or 5 columns, then the ink will gradually taper off and it will not print the rest of the ten. Printer prints everything else ok. Columns are not hidden. Any ideas. I am using MS Works 8.0 and Windows XP 5.1