Hi Debra

Thanks for posting in the community! Unfortunately you cannot currently print the document with the gridlines showing. If you'd like to potentially see the ability to print gridlines added to Lucidchart in the future please submit a idea in our Product Feedback section Our team uses this form to combine like requests from users and pass them to our Product team for consideration. I hope this helps! 

You could just screen shot it and then print the screen shot.

Hi Micah thanks for sharing that workaround! That's a great idea. Please feel free to continue to share your questions and ideas in the Community!