WF-3730
Ink for the WorkForce Pro WF-3730 is the Epson 702 family in four individual pigment cartridges. Below are Clever Supplies compatible 702XL cartridges — black (T702XL120) up to 1,100 pages, colours up to 950 pages each — with a chip included, backed by a lifetime warranty, and with this family's firmware note stated openly in the long text below.
| Cartridge | Type | Color | Approx. Yield |
|---|---|---|---|
| Epson T702XL120 (compatible) | High-capacity ink cartridge | Black | 1,100 pages |
| Epson T702XL220 (compatible) | High-capacity ink cartridge | Cyan | 950 pages |
| Epson T702XL320 (compatible) | High-capacity ink cartridge | Magenta | 950 pages |
| Epson T702XL420 (compatible) | High-capacity ink cartridge | Yellow | 950 pages |
| Epson 702XL Set of 4 (compatible) | Full cartridge set, all XL | Black / Cyan / Magenta / Yellow | 1,100 black, 950 per color |
| Epson 702XL Set of 9 (compatible) | Bulk set: 3 black + 2 of each color, all XL | Black / Cyan / Magenta / Yellow | 1,100 per black, 950 per color |
WF-3730 Ink Cartridges — 702XL, All Four Colours
Epson's cartridge FAQ is titled for the WF-3720 / WF-3730 series jointly, and the table is the same for both machines: standard 702 codes at 350 pages for black and 300 per colour, and 702XL codes at up to 1,100 for black and up to 950 per colour (ISO/IEC 24711), DURABrite Ultra pigment ink in every position. We stock the XL tier — T702XL120 black and T702XL220 / T702XL320 / T702XL420 colours — as singles, a Set of 4 and a Set of 9.
Do not let the model numbers blur: the WF-4730 is an 802 printer, not a 702 printer, despite sitting one digit away in Epson's catalogue. Badge first — WF-3730 means this page, and the standard tier exists only as Epson's own cartridges, not on this shelf.
The same 702XL shelf serves the whole family roster — WF-3720, WF-3733 — so one cartridge list covers every model on it, and a spare bought for any of them fits the rest. Pigment ink is the everyday half of this family's story: dry-to-the-touch pages and smudge-resistant text, with spares that keep best sealed — away from air and light — until the day they are installed.
Which 702XL should you buy?
- One colour ran out: replace just that slot — black is $22.49; cyan, magenta and yellow are $16.49 each.
- Full refresh: the Set of 4 ($64.44) replaces all four positions in one box.
- Stocked office shelf: the Set of 9 ($133.38) carries three blacks and two of each colour, all XL.
Chip, ink and everyday use
The WF-3730 shares this family's documented firmware sensitivity: updates have, on this platform, changed how third-party cartridges are treated. A chip is included with every cartridge, and printer firmware updates can affect recognition — turning off automatic updates until a new cartridge is recognised is the precaution sellers of this family commonly recommend. If a cartridge is ever questioned after an update, reseat it, restart, and then lean on the lifetime warranty, with 1-year free returns, if the warning persists.