high precision coating for hard disk media

[joe]

Hi evreyone, I am an industrial engi. student. I got this project in a
mechanical eng course, and I have to describe the process of high
precision coating for hard disk media, and I can't find any decent
literature on the web and the deadline is next week.. so I am getting
desperate.. can someone help me please.. any suggestions on the
process or some links or literature that would help me.. Thank you
kindely