When I print a chart, some of the horizontal grid lines are missing. I am using an Epson Stylus CX4800. The lines that are missing are fairly consistent from page to page on a multi-page chart -- lines 6, 13, 22, etc. Any suggestions? Thanks!
That sounds like a printer problem. I suggest you clean your print heads or replace your printer cartridge and try again. Check the pattern in a print preview. If you see the grid lines there, they are being sent to the printer.