You might consider using an Alert for this. Once you set up an alert, a window will pop up when you run the report stating that an alert has been triggered. If you choose to view those records, they will be isolated in the report, and you can print them. If you don't choose to print them, you will see everything.
I don't think you can set it up to show all records when your viewing, but only certain records when you print.
Anyway, if your interested in Alerts, you can find them under Report, Alerts.
Click New, give it a name, add a message that will be displayed telling you what the alert means, and then set up the condition in the editor.
~Brian