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HP 42A Black LaserJet Toner Cartridge (Q5942A)

  • Black
  • single pack
  • Standard Yield
  • Laser printer toner cartridge
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
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Get great results every time from Hewlett-Packard's advanced toner formula, which features micro-sized particles that produce sharp text, smooth grayscales and deep blacks. The consistent particle size enables accurate placement while maximizing efficiency. Receive alerts when a print cartridge is running low, monitor its remaining life, and enjoy convenient online ordering or check stock and prices near you with HP SureSupply. Designed for use with HP LaserJet 4250 and 4350 Printers. Yields 10,000 pages.

Learn more about the Hewlett-Packard 42A (Q5942A)


42A (Q5942A)


Cartridge Quantity
Single Pack
Cartridge Color
Compatible Products
HP LaserJet 4250 Series (4250n, 4250tn, 4250dtn, 4250dtnsl)
HP LaserJet 4350 Series (4350dtnsl, 4350n, 4350tn, 4350dtn)
HP LaserJet 4240n
Approximate Page Yield
10,000 standard pages Declared yield value in accordance with ISO/IEC 19752


Get true HP LaserJet print quality with advanced toner formula and print cartridge technology in the HP LaserJet Q5942A/X Black Print Cartridges with Smart printing technology. HP delivers sharp black text and consistent, professional results for as long as the cartridge lasts.
Work smart. HP Smart printing technology makes automatic adjustments to optimize print quality and enhance reliability. The cost-effective HP Q5942A/X Black Print Cartridges with Smart printing technology provide reliable operation to minimize user intervention and improve productivity.
Enjoy low maintenance, trouble-free printing. HP Smart technology in the print 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.

Manufacturer Warranty

1 year limited
1 year limited

Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year

Customer Reviews of the Hewlett-Packard 42A (Q5942A)

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  • Joey A.
  • 7/31/2012 2:05:05 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsWorks Perfect

Pros: Works Perfect. I use these in 3 of our HP Laserjet 4240's
I have purchased at least 10 of these over the last few years. The chip in them has always worked.
I will only buy HP toners. I have been burned too many times with OEM brands that say they work. Then they have problems with the Chip on the toner.

Cons: None

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