The Printscreen button is found on most computers to the left of the top function keys. By simply depressing the Printscreen key a copy of the computer screen is saved to the computer's clipboard, which can then be pasted into applications such as Paint or other image editing programs. This is the simplest method of capturing images and often overlooked by those silly enough to pay  for "screen capture" programs.
Regardless of what method is used in an attempt to capture CopySafe content, the result will be blank.