LaserJet 2420DTN

Duplex, network and a second paper tray: the LaserJet 2420DTN was the configuration of the 2420 series that left nothing off the list, a mid-2000s departmental monochrome LaserJet built to minimize refills and interruptions. Its cartridge bay takes the Q6511A standard cartridge (the HP 11A), the high-yield Q6511X (the HP 11X) and the maximum-yield Q6511XX for the longest intervals between swaps.

Departments chose this exact build for a reason. A second tray means mixed paper stocks stay loaded and letterhead never has to be swapped in by hand; the duplex unit turns long reports into two-sided documents without anyone standing at the output tray; and the network port lets the whole floor print to one machine. Every one of those features raises the monthly page count, which is why the buying decision on this page matters more than it does for a personal printer.

Toner Cartridges for LaserJet 2420DTN

Which cartridge should you buy?

Three yields share one bay. The standard cartridge is the right start for a 2420DTN that has settled into light duty, and the sensible spare to keep in the tray cabinet. The high-yield cartridge is where most departments land: it stretches the interval between swaps and lowers the cost per page, and its 2, 3 and 5 packs keep a busy floor stocked without constant reordering. The maximum-yield build exists for exactly this configuration — high volume, no appetite for interruptions — and stretches intervals further still. The Premium 5 pack offers the upgraded build in a bundle; the MICR versions, in either standard or high yield, are reserved for check printing. Every compatible cartridge on this page is backed by a 1-year warranty and 1-year returns.

Chip, toner and everyday use

The cartridge chip tracks toner level and reports it to the printer, so whoever manages the department's supplies can see a swap coming instead of hearing about it from a colleague holding a faded report. When the low warning appears, rock the cartridge gently to redistribute the remaining toner — it buys time, but on a machine with a second tray eating paper this fast, order the same day. Pull the seal fully before seating a new cartridge, push it home firmly, and run a test page through both trays to confirm the whole paper path is printing cleanly.

Frequently Asked Questions

Does the LaserJet 2420DTN print on both sides automatically?

Yes. The built-in duplexer prints the second side without anyone flipping pages; select two-sided printing in the driver when you send the job.

What is the difference between the Q6511A and Q6511X?

Capacity. Both are the same cartridge family in two sizes — standard and high-yield — and they install in exactly the same way. Choose by how much the department prints, not by fit; either one drops straight in.

What is the Q6511XX for?

It is the maximum-yield build of the same cartridge, made for departments that want the longest possible interval between changes. On a fully loaded configuration like this one — two trays, networked, duplexing — it is the option that matches the machine's appetite.

Can I use a compatible cartridge in the 2420DTN?

Yes. The bay, contacts and toner formulation follow the original design, so a compatible cartridge installs exactly like the original and the printer recognizes it the same way.

More printers that use the same cartridges

The whole 2400 family shares these cartridges:

HP Q6511A, LaserJet 2400, LaserJet 2400, LaserJet 2400D, LaserJet 2400DN, LaserJet 2410, LaserJet 2410XI, LaserJet 2420, LaserJet 2420D, LaserJet 2420DN, LaserJet 2420N, LaserJet 2420TN, LaserJet 2430, LaserJet 2430DTN, LaserJet 2430N, LaserJet 2430T, LaserJet 2430TN.