LaserJet 4345XM

The LaserJet 4345XM takes HP's 4345 multifunction platform and adds features aimed at demanding small offices: print, copy and scan run through one 2004 all-in-one, and every one of those jobs draws on the same toner. The cartridge is the 45A (Q5945A), the standard black for this family. Where the XM's heavier document flow empties a standard cartridge quickly, the maximum-yield 45X (Q5945X) keeps the same fit and simply holds more toner, so changes come less often.

An XM configuration usually sits where paperwork piles up — invoices to scan, contracts to copy, reports to print before a meeting. Because scanning and copying share the engine with printing, toner use on this model climbs faster than on a print-only machine doing the same page count of office documents. Planning a spare around that combined workload, rather than around print volume alone, is what keeps a multifunction like this one from stalling mid-job.

Toner Cartridges for LaserJet 4345XM

Which cartridge should you buy?

Start with how the machine is actually used. If the 4345XM mostly prints and the cartridge lasts a comfortable stretch, the standard Q5945A is the straightforward replacement, and the Premium Quality listing is the same code in a premium build. Offices that find themselves swapping cartridges at awkward moments — mid-scan-batch, mid-copy-run — are the ones that gain from the Q5945X: the maximum fill stretches the interval between changes and lowers how often the machine sits open. The Q5945A MICR listing exists for one job only, printing checks with magnetic toner, and is not a general-purpose substitute. Every compatible cartridge here is covered by a 1-year warranty and 1-year returns.

Chip, toner and everyday use

The chip on the cartridge reports toner level to the machine, and on a multifunction that estimate feeds every function — copying and scanning-to-print stop for an empty cartridge just as printing does. When the low warning appears, order the replacement then rather than waiting for faded pages. Seat a new cartridge firmly until it clicks; a half-seated cartridge is the usual cause of a not-recognized message. Keep the spare sealed, flat and away from heat, and set it next to the machine: on a shared all-in-one, the person who hits empty is rarely the person who ordered the spare.

Frequently Asked Questions

Which toner cartridge does the LaserJet 4345XM use?

It uses the Q5945A black cartridge, also sold as the HP 45A. The maximum-yield Q5945X fits the same slot for offices that want longer runs between changes. Check the code on the cartridge you remove if you are ever unsure.

Does copying and scanning use the same cartridge as printing?

Yes. The 4345XM has one toner cartridge for the whole machine, so copies and scanned documents printed back out draw on the same Q5945A supply as ordinary print jobs.

When would I choose the MICR listing?

Only for printing checks. The Q5945A MICR cartridge uses magnetic toner that check readers can scan; for letters, invoices and reports, the standard or maximum-yield listings are the right choice.

My office empties a cartridge fast. What helps most?

Move to the Q5945X maximum-yield cartridge. It fits exactly like the standard cartridge and holds a deeper fill, which suits a multifunction whose copy and scan work adds to its print load.

The same cartridges also serve these related models: HP Q5945A, LaserJet 4345, LaserJet 4345MFP, LaserJet 4345X, LaserJet 4345XMFP, LaserJet 4345XMMFP, LaserJet 4345XS, LaserJet 4345XSMFP, LaserJet M4345, LaserJet M4345MFP, LaserJet M4345X, LaserJet M4345XM, LaserJet M4345XMFP, LaserJet M4345XMMFP, LaserJet M4345XS, LaserJet M4345XSMFP.