Overview HP 78 Laser Jet Toner Cartridges offer great value for everyday business printing. HP Laser Jet toner cartridges help you print professional quality reports, letters & invoices with ease. Features Avoid downtime with the legendary quality & reliability of Original HP Laser Jet print cartridges. Produce bold, crisp text & sharp black-&-white images. Use HP Laser Jet printers together with Original HP toner cartridges to achieve consistent, professional results. Simplify your printing experience with reliable, easy-to-use printing & supplies management, plus convenient, free recycling.