Print a Record Page
Where: This change applies to Lightning Experience in Group, Professional, Enterprise, Performance, and Unlimited editions.
The printable view opens with the record details expanded or collapsed, based on visibility on the record home page. You can change visibility for all record details or for individual detail sections. Related lists are visible in printable view, and you can’t modify their visibility for printing.
Admins can remove the Printable View button from the record page layout in the Page Layout Editor to disable the feature.