Found in 1 comment on Hacker News
Cieplak · 2012-02-20 · Original thread
How to build your own laser printer:

http://www.amazon.com/Build-Postscript-Laser-Printer-Bundle/...

Has anyone here built a printer before? I'd like to build one for Richard Stallman and his Lemote YeeLoong, and send it to him with the source code.