When doing a print screen on a reservation, you may get a print out where some of the sections display as black as seen below.
This issue occurs in the latest version of Chrome. Chrome recently updated from version 49 to version 50 which is causing this issue. Until Google updates Chrome again, you will need to print that screen in another browser such as Internet Explorer, Firefox, or Safari.
Steps to Duplicate
From a reservation right-click the screen and select print or do ctrl-p.