I have tab in a workbook which I imported from a workbook a colleague sent me. It contains a lot of formulas etc linked to other sheets within my workbook. The problem with it is any negative numbers (which appear in red on this tab) and some cells highlighted in darker colors print with very poor quality – the negative numbers are fuzzy and unreadable - some of the darker colors print out very pixelly and make the numbers very difficult or impossible to read. I remember when this used to be an issue with previous versions of Excel. However, while the rest of the tabs in my workbook do not have this problem, this one sheet continues to be a problem and it contains a multitude of numbers which I need to analyze and present on paper. I think this has something to do with formatting in the previous excel version that my friend was using being saved.

Any tips to reformat or update this sheet, in order to eliminate this problem would be much appreciated. Thanks.