I want to buy a few bitcoins and keep them in an Armory offline wallet but there are some things I don't quite understand.

My plan is:

I will get a computer that has never touched the internet and I don't plan for it to.  I will install the Armory offline client on this computer and create a new wallet.

Here is what I don't quite get (sorry if its confusing):

Once I create the wallet, if I understand correctly, I can then print out a paper wallet, even before I add any bitcoins to the wallet, which has the private keys on it. 

What I don't understand is this: Once I print out that paper wallet, will that paper wallet always let me access my bitcoins regardless of how many bitcoins I send to and from this offline wallet?  Basically, does the paper wallet or private keys change every time I send bitcoins in or out of my wallet?  Or do the private keys on the paper wallet stay the same no matter how many times I move coins in or out, as long as the wallet and addresses are the same?

Thanks.