Here is the title and a synopsis of the episode.
4. OFFICER RIMMER
After a scandalous piece of good fortune Rimmer saves the life of a bio-printed Captain and is promoted, fulfilling his life-long dream of becoming an Officer. He immediately opens an Officer's club, which is out of bounds to the lower orders, and uses the bio-printer to fill it with versions of himself.
Copies of Rimmer??? It's M2 again!
And Rimmer had enough trouble with just one copy!
Of course, Rimmer would not learn from his past mistake.
Here's a couple of questions- what is a bio-printer, and why haven't they used it before??
Perhaps they just acquired it.
The Dwarfers were always salvaging stuff from wrecked ships.