As of September 11th 2017 the Library and Sherwood Room use the University-wide "DS-Print" system. This brings the benefits of single "common balance" between all participating institutions, and allows you to add credit via a web-portal.
University staff and students - DS-Print uses your UIS "Desktop Services" credentials - usually this is synchronized with your Raven password. If it is not working, try resetting your password at https://password.raven.cam.ac.uk/
NHS Staff and others - A DS-Print account using your card number (Vxxxx) is created for you when you register with the library, set to the same as your login for the Library computers.
If your card number begins with an N, or you did not receive and email, please speak to the Library Staff, who can update your account.