The Hewlett Packard LaserJet 3030 uses the Q2612A cartridge for laser toner refill. 

 I just found a fantastic cheap deal on this at InkJetSuperstore.com and would like to pass it on.

Q2612A-10 Detailed Description

HP Q2612A LJ 1010/1012/1015/3015/3020/3030 Compatible Toner Cartridge, New Drum. InkjetSuperstore offers low prices on HEWLETT PACKARD Compatible Laser Cartridges. Our high-quality HEWLETT PACKARD Q2612A, 12A, Q2612A-C Compatible Laser Cartridges are fully guaranteed and environmentally friendly - giving you crisper- sharper printouts every time. These are designed for everyday business and home printing.

We stock HEWLETT PACKARD Laser Cartridges in our warehouse for immediate shipping. Compare our cheap prices on HEWLETT PACKARD Q2612A, 12A, Q2612A-C Laser Cartridge and you will not shop anywhere else again. We offer a 100% Quality Satisfaction Guarantee on our HEWLETT PACKARD Q2612A, 12A, Q2612A-C Laser Cartridge.