how can I get my printer to print in grayscale ?

[FRUSTRATED]

My printer used to print in grayscale when I ticked that option now it always
prints in pink and black.

 

[David McRitchie]

I think you will have to have black ink only in your printer, or tell the printer
to use Excel. You do not want to use the B&W setting in page setup, sheet

http://www.mvps.org/dmcritchie/excel/colors_print.htm