You need to do a little planning to make it possible for your users to print topics containing toggles. Of course, this is only necessary in the formats where toggles are "active" – toggle printing is not a problem in formats like PDF and Word DOCX because the toggles are always static in these formats, so their entire contents are always printed (provided you have configured the toggles to be displayed expanded in print mode).
In all formats where dynamic toggles are supported (WebHelp, HTML Help, MS Help 2.0) the toggles are always printed exactly as they are currently displayed. Expanded toggles are printed expanded, collapsed toggles are printed collapsed.
Generally, your users will want to print out the entire contents of the topic, including the contents of all toggles.