Get the best results from your HP printing system. HP Smart technology[1]
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.
Outstanding color
Consistently accurate color and precise images with HP chemically-grown tonerOptimal print quality with new image mode feature[3]
Reliable, cost-effective
Cost-effective operation with all-in-one HP toner cartridgesHP Smart technology[1]
tunes particle charge for reliable resultsRated A+ for service and reliability, PC Magazine August 2003
Easy to use
Easy to use automatic alerts, on-line ordering with HP Smart printing technology[1]
When a color cartridge runs out, continue printing with the black cartridge[2]
Easy to use and install with HP Smart printing technology[1]
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