LaserJet 4345

HP's LaserJet 4345, launched in 2004, brought workgroup multifunction printing into the mainstream — a monochrome MFP that printed, copied, and scanned from a single A4 box. Small and midsize offices finally had an affordable all-in-one without compromises.

It runs on the HP 45A cartridge (Q5945A). We stock compatible 45A toner and genuine OEM Q5945A cartridges for the 4345.

Toner Cartridges for LaserJet 4345

This printer works with the following toner cartridges:

HP Q5945A

More HP Printers

Frequently Asked Questions

Which toner cartridge does the LaserJet 4345 use?

The LaserJet 4345 uses the Q5945A toner cartridge. Confirm the code printed on your current cartridge matches before ordering a replacement.

When should I replace the toner cartridge in the LaserJet 4345?

Replace the cartridge in the LaserJet 4345 when prints stay faded after redistributing the toner, or when the printer reports it empty. Running the LaserJet 4345 on a fully depleted cartridge risks blank pages mid-job.

How do I replace the toner cartridge in the LaserJet 4345?

Open the toner-access door on the LaserJet 4345, pull the spent cartridge out by its handle, and slide the new Q5945A straight in until it clicks. The LaserJet 4345 recognizes the new cartridge automatically — print a test page to confirm clean output.