From Graphene Theme Documentation
This option allows you to use Graphene's built-in
print.css stylesheet to produce printed pages which focus on content.
Specifically, the following items will not be included in the printed page when this function is enabled:
- Top bar
- Navigation menu
- Comment form
- Enable print CSS for single posts and pages?
- Turns the feature on. All printed pages will use the Graphene's built-in print stylesheet.
- Show print button
- Displays a tiny printer icon in the upper-right hand corner of single posts and pages that users can use to bring up the print dialogue.