Hmm, I know you posted here with some CSS that worked for you when looking at the form https://answers.laserfiche.com/questions/223661/Modern-designer-table-width-wider-than-screen#223665

I unfortunately don't think there will be a good way to print this because you are purposely overflowing the maximum width of the page. Have you tried adjusting the width of the form to support the table size you need? 150% would be 1200px in your case. The only adverse affect here is that the entire form will be this wide instead of just the table, but you should be able to fit more fields side by side to accommodate the wider form.