HP LaserJet 4345mfp Ink & Toner

Cartridge prices starting at $49.95

If you want a multifunction printer that delivers rocking speed and quality whether for printing or copying, then the HP Laserjet 4345MFP is the ideal option for you. Designed with small businesses and workgroups of 3 to 15 users in mind, the 4345MFP offers laser printer and copier speeds of up to 45 ppm black at 1200 x 1200 dpi resolution. It is also made flexible as it supports multiple paper trays, stapling and stacking document-finishing options, a 3-bin mailbox, and digital sending. So, what else would you need? If you're worried about the cost of replacement toner cartridges, then choose Inkjets.com's affordable alternatives. Our HP 45A (Q5945A) Remanufactured Black Jumbo Toner Cartridge is rebuilt following OE-quality standards but priced as much as 40% off than its original counterpart. Contact us to place your order today.

How To Replace Cartridge(s)

Here's how to replace the toner cartridge on the HP Laserjet 4345MFP:


  1. Lift the scanner assembly, and then lift the toner cover until it is locked in place.
  2. Hold the middle hand of the used toner cartridge and pull it along the tracks to remove it from the printer.
  3. Unpack the new toner cartridge and remove the sealing tape completely.
  4. Hold the middle hand of the new cartridge and align it with the tracks inside the printer.
  5. Push the new cartridge in firmly until you hear it click into place.
  6. Close the toner cover, and then lower the scanner assembly.


Frequently Asked Questions


What to do—I got a totally blank page even if I just installed a new toner cartridge on my HP Laserjet 4345MFP?

When you tried printing and got a totally blank page even with a newly installed toner cartridge on your Laserjet 4345MFP, simply remove the new cartridge from the printer and check if the sealing tape was removed from the cartridge. If not, then remove it completely before you reinstall it inside the printer.


I am wondering what's causing the very light prints. Any idea?

Light prints are caused by one of two reasons: the toner cartridge is not fully installed (if you recently installed a new cartridge) and the toner level in the cartridge might be low.


The printouts have vertical lines. What could be the problem?

Vertical lines in the printouts may indicate low toner level. Replace the toner cartridge if this is the case.

Cartridges compatible with your HP LaserJet 4345mfp Printer

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