What Ink Does the Epson WorkForce WF-3730 Use?
Last Updated:Shopping for this printer? See all Epson 220 Ink Cartridges – 220 & 220XL → Ships same day by 4 PM ET, 1-year guarantee.
Correction: an earlier version of this article said the WF-3730 uses Epson 220 cartridges. It uses Epson 702/702XL.
CastleScore · October 2026
81/100 — Highly Recommended
Epson WorkForce WF-3730
| Pillar (weight) | Score | What it is based on |
|---|---|---|
| Owner ratings (28%) | 83 | 4.24★ average across 2,245 ratings at Amazon (4.2), Best Buy (4.3) |
| Expert reviews (18%) | 70 | PCMag (WF-3733) 3.5/5 |
| Cost per page (24%) | 83 | About 2.6¢ per page blended (black + color) with our remanufactured 702XL (1,100 black / 950 color pages). Docked because the printer can reject cartridges without the maker's chip. |
| Reliability (13%) | 78 | Most-reported problems: third-party 702/702XL cartridges rejected after Epson's October 2019 firmware update; epson's official answer to post-update 'ink not recognized' errors is to replace non-Epson cartridges with genuine Epson ink; printhead clogging/failure causing streaky, smudged or blank prints |
| Features (12%) | 92 | Print, copy, scan, document feeder, auto two-sided printing, fax, Wi-Fi, Ethernet, touchscreen, fast (20+ ppm). |
| Value (5%) | 83 | Running cost and owner satisfaction |
Discontinued. Epson's U.S. product page lists the WF-3730 as discontinued and names no successor.
CastleScore is Castle Ink’s own editorial rating, built from retailer star ratings, expert reviews, real cost per page and owner complaint patterns, checked October 10, 2026. It is not a customer review. See every ranked printer or how the score works.
The cartridges, pictured
702XL 4-packBlack + Cyan/Magenta/Yellow
702XL BlackT702XL120 · ~1,100 pages
702XL CyanT702XL220 · ~950 pages
702XL MagentaT702XL320 · ~950 pages
702XL 4-pack
702XL Black
702XL Cyan
702XL MagentaOur own remanufactured cartridges, photographed in-house.
Quick answer: what ink does the Epson WorkForce Pro WF-3730 use?
The Epson WorkForce Pro WF-3730 uses 4 Epson 702 DURABrite Ultra cartridges: black, cyan, magenta, and yellow. High-capacity 702XL cartridges fit the same slots. 702XL is rated for about 1,100 black and 950 color pages, roughly three times the standard size, so it's the better value for regular office printing. The pigment ink dries fast and resists smudging, which suits documents.
Cartridge options at a glance
| Cartridge | Part numbers | Approx. yield* |
|---|---|---|
| Epson 702 black | T702120 | ~350 pages |
| Epson 702 color (C/M/Y) | T702220 / T702320 / T702420 | ~300 pages each |
| Epson 702XL black | T702XL120 | ~1,100 pages |
| Epson 702XL color (C/M/Y) | T702XL220 / T702XL320 / T702XL420 | ~950 pages each |
*Approximate ISO yields from published cartridge specifications. Real-world results depend on coverage, photo printing, and cleaning cycles.
Common questions about Epson WorkForce Pro WF-3730 ink
Should I buy 702 or 702XL for the WF-3730?
702XL for most people. 702XL is rated for about 1,100 black and 950 color pages, roughly three times the standard size, so it's the better value for regular office printing. See Is XL ink actually worth it? Standard vs. XL with real numbers.
Can I mix standard and high-yield cartridges?
Yes. Each cartridge is read separately, so any mix of 702 and 702XL works.
What other printers use Epson 702 ink?
702/702XL also fits the WorkForce Pro WF-3720, and WF-3733. If you own more than one, a single stock of cartridges covers them all.
Will other Epson cartridges fit the WF-3730?
No. Epson 252 (WF-3640, WF-7710, WF-7720) and Epson 220 are different cartridges, even though the printer names are close. Always match the number on your current cartridge.
Are remanufactured or compatible 702XL cartridges safe for the WF-3730?
With a caveat. Using non-Epson cartridges doesn't by itself void your warranty under U.S. law, but Epson says the WF-3730 is designed for Epson cartridges only. It was one of the models named when an October 2019 Epson firmware update was reported to block third-party 702XL cartridges, and Epson's own FAQ tells owners in that situation to switch to genuine Epson ink; it offers no rollback. If you use remanufactured cartridges, turn off automatic firmware updates and decline update prompts. More: Compatible vs. remanufactured vs. OEM ink and Does compatible ink void your printer warranty?.
How do I replace the ink in the WF-3730?
Turn the printer on and lift the scanner unit. When the carriage stops, squeeze the tab on the empty cartridge and lift it out. Shake the new cartridge gently, remove only the yellow tape, and press it into its slot until it clicks. Close the scanner unit and let the printer charge the ink. Step-by-step: How to install an ink cartridge in an Epson printer.
Why won't the WF-3730 recognize a cartridge?
Reseat it firmly until it clicks, make sure the yellow tape is fully removed, and wipe the chip with a dry lint-free cloth. Turn the printer off for a minute. If a compatible cartridge stops working right after a firmware update, contact the seller for a replacement. More fixes: Printer says ink cartridge not recognized: how to fix it.
Why are prints from my WF-3730 faded, streaky, or blurry?
Run a nozzle check from the Maintenance menu first. Gaps mean a clog: run a head cleaning (up to two or three cycles). If the check is complete but lines look jagged or doubled, align the print head instead; see our print head alignment guide. More fixes: Why is my printer printing streaks?.
Why did the first set of cartridges run out so fast?
New printers use part of the first set to fill the ink system. It's a one-time cost. See why the first cartridges run out fast.
Does the WF-3730 print double-sided and fax?
Yes. It's an office all-in-one with automatic 2-sided printing, a 35-sheet automatic document feeder, and color fax. The feeder scans one side only, so two-sided originals have to be flipped and fed again.
Is the WF-3730 the same as the WF-3720?
They're closely related WorkForce Pro models and use the same 702 cartridges. See the WF-3720 ink guide.
What WF-3730 owners ask
These are the questions that come up most for this printer on retailer Q&A pages, Epson's support pages and owner reviews, answered in our words.
How much paper does it hold?
Up to 500 sheets. Epson's U.S. page lists two 250-sheet front cassettes.
Can it print banners or extra-long pages?
Yes. Using a user-defined paper size, it prints up to 8.5 × 47.2 in.
Can faxes go straight to my email?
Yes. PC-Fax can send and receive from a computer, and received faxes can be forwarded to an email address or a folder.
Can my phone print without my Wi-Fi network?
Yes. It supports Wi-Fi Direct, and NFC lets a compatible phone connect with a tap. It also has Ethernet and USB.
Does Epson sell a set with an XL black?
Yes. Epson's T702XL-BCS combo pairs a 702XL black with standard 702 cyan, magenta and yellow ($93.95 at Epson when we checked). The standard 4-pack, T702120-BCS, was $70.95.
WF-3730 quirks worth knowing
- Two-sided printing roughly halves the speed: Epson rates it at 20 pages a minute black and 10 color one-sided (ISO), but 10 and 7 two-sided.
- Epson rates it for up to 15,000 pages a month but recommends no more than 1,500.
- The PrecisionCore print head is part of the printer, not the cartridge. Streaky or blank prints that survive several cleanings usually point to a clogged or failing head, and third-party sellers offer replacement heads for the WF-3720 and WF-3730.
- The fax is color-capable, stores up to 180 pages and holds 100 speed dials.
Other printers that use Epson 702
More Epson ink guides: Epson WorkForce Pro WF-4830 · Epson WorkForce WF-2950 · Epson Expression Premium XP-7100 · find any printer
Replacing it? Our highest-rated alternatives
- Epson EcoTank ET-2980 — CastleScore 90
- Epson EcoTank ET-2850 — CastleScore 86
- Epson WorkForce Pro WF-3820 — CastleScore 80
Sources
Ratings and prices were checked on October 10, 2026 and will change over time.
Need replacement Epson 220 Ink Cartridges – 220 & 220XL? Shop Epson 220 Ink Cartridges – 220 & 220XL at Castle Ink. Remanufactured, up to 70% less than OEM, and shipped the same day when you order by 4 PM ET.