HP LaserJet 3055 All-in-One is an HP solution for printing, faxing, scanning and copying in a single device. The device is fast and high quality output and it supports TCP/IP configuration. So you can print from any computers inside your LAN via IP address.
This video shows you how to install / add the HP LaserJet 3055 All-in-One Printer to Mac OS X Lion 10.7.4 on my MacBook Pro. It should be also applicable for the previous version of Mac without many differences.
See the video tutorial below!