- Get the best results from your HP printing system
- Accurate color, precise image reproduction and crisp, sharp text every time you print
- Save time with all-in-one HP 645A LaserJet supplies
- Enjoy low maintenance, trouble-free printing
HP Smart technology and chemically-grown toner formulas in HP 645A LaserJet Toner Cartridges work with your printer to deliver accurate, consistent color and reliable, cost-effective performance.
HP Smart technology makes automatic adjustments to optimize print quality and enhance reliability. Minimal user intervention saves time, improves productivity and lowers overall printing costs.