HP 645A Black Original LaserJet Toner Cartridge
Get the best results from your HP printing system. HP Smart technology1 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.
Accurate color, precise image reproduction and crisp, sharp text every time you print. Chemically-grown toner and HP Smart printing system technology1 deliver consistent results and reliable performance throughout the life of the cartridge.
Save time with all-in-one HP 645A LaserJet supplies. HP Smart technology1 makes automatic adjustments to optimize print quality and enhance reliability. Minimal user intervention saves time, improves productivity and lowers overall printing costs.
Enjoy low maintenance, trouble-free printing. HP Smart technology1 in the toner cartridge and your printer makes HP supplies easy to install and maintain. Receive automatic alerts when a cartridge is low or out. Enjoy convenient, on-line ordering.
Color(s) of printing supplies
Page yield (black and white)
Page yield footnote
Approximate yield based on 5% average coverage. Actual yields vary considerably based on content of printed pages and other factors.
Operating temperature range
15 to 25°C
Storage temperature range
-20 to 40°C
Non-Operating Humidity Range
10 to 90% RH
Dimensions and weight
Package dimensions (W x D x H)
500 x 160 x 265 mm