Color 3750DTN
The HP Color 3750DTN combined everything a high-volume office wanted: duplexing, networking and extra paper capacity, churning through color jobs with minimal supervision. It uses the Q2670A (HP 308A) black, sold here under the listing name Compatible HP 309A (Q2670A) Toner Cartridge Black, and 311A color cartridges Q2681A, Q2682A and Q2683A. One of the two listings below is an exact fit for this machine; the other is not, and the difference matters.
Minimal supervision was the design brief, and it extends to supplies: a DTN is bought so that nobody thinks about it for weeks at a time. The offices that ran them learned to pair that freedom with a stocked shelf — the machine's independence lasts exactly as long as its cartridges do.
Toner Cartridges for Color 3750DTN
The table lists everything stocked on this page for the family; read the note before choosing color.
| Cartridge | Color | Page Yield |
|---|---|---|
| Q2671A / Q2672A / Q2673A — 3 Color Set | Cyan, Magenta, Yellow | See product page |
| Q2670A | Black | See product page |
The honest position on color: the set stocked here, the Compatible HP 3550 (Q2671A Q2672A Q2673A) Toner Cartridge 3 Color Set, carries the 309A colors of the 3550 family and sits on this page as an also-stocked item. A 3750DTN cannot print with it. This model's colors are the 311A cartridges Q2681A, Q2682A and Q2683A, and they are not stocked on this page.
Which cartridge should you buy?
For a machine bought to run untouched, the black supply chain is the whole plan: the Q2670A is the exact-fit cartridge stocked here, long runs consume it steadily, and the correct stocking level is one in the machine plus one on the shelf. Color requires the opposite instinct — slow down and read codes. The 3750DTN takes the 311A color cartridges Q2681A, Q2682A and Q2683A, fitted individually as each empties. The 309A set on this page, however convenient it looks, belongs to the 3550. If your department runs both generations, a labeled shelf prevents the one expensive mistake this family makes easy. Compatible black carries a 1-year warranty and 1-year returns.
Chip, toner and everyday use
Unattended machines get their maintenance in batches: when you refill the big trays, glance at the four toner levels the chips report and stage whatever is running low. Fit replacements with the seal pulled fully and the cartridge seated until it clicks; then let the machine run its calibration before the next long job. Fading mid-run means the named cartridge is done — rocking it may finish the current job, but swap in the spare at the next break. Keep spares boxed and upright near the machine, oldest stock first.
Frequently Asked Questions
How should a high-volume office stock toner for the 3750DTN?
One Q2670A in the machine and one sealed spare beside it covers black. For color, stock the 311A codes this printer actually uses — Q2681A, Q2682A, Q2683A — rather than any set bought on family resemblance.
Will the 3550 color set work if I am stuck?
No — being stuck does not change the cartridge geometry. The set's 309A colors fit the 3550 family; the 3750DTN needs its 311A cartridges.
Does the DTN's extra paper capacity affect toner use?
Only indirectly: bigger trays mean longer uninterrupted runs, so a cartridge can go from low to empty inside one big job. The chips warn ahead of that point — act on the warning.
Is there a separate drum or maintenance cartridge to stock?
None is listed for this model on this page. The stocked decision here is the Q2670A black; everything else this printer consumes is paper.
More printers that use the same cartridges
The models below sit in the same cartridge family — useful if you run more than one of them or are comparing a sibling machine:
COLOR LASERJET 3700DN, COLOR LASERJET 3700DTN, COLOR LASERJET 3700N, Color 3500, Color 3500N, Color 3500dn, Color 3500dtn, Color 3550, Color 3550N, Color 3700, Color 3700DN, Color 3700DTN, Color 3700N, Color 3750, Color 3750DN, Color 3750N, Color LaserJet 3500, Color LaserJet 3500N, Color LaserJet 3500dn, Color LaserJet 3500dtn, Color LaserJet 3550, Color LaserJet 3550N, Color LaserJet 3700, Color LaserJet 3750, Color LaserJet 3750DN, Color LaserJet 3750DTN, Color LaserJet 3750N, HP 308A-309A, HP 308A-311A