iCopy Free Photocopier is a free and open source application that lets you combine your scanner and printer into a powerful, easy to use photocopier by only pressing a button. You can use Automatic Document Feeders (ADF) too!
You can run iCopy by just pressing the button of your scanner!! Its simple user interface lets you manage scanner and printer options, like brightness, contrast, number of copies in a couple of seconds.
As it’s small and no installation is required, iCopy is also suitable for USB pen drives.