Which ink does the Epson WorkForce Pro WF-7840 use?
The Epson WorkForce Pro WF-7840 (inkjet, 2020) uses Epson 812XL, Epson 812.
Third-party cartridge risk: Low no firmware lockout is on record for this printer, so compatible and remanufactured cartridges should work.
The Epson WorkForce Pro WF-7840 printer uses Epson 812XL and 812 ink cartridges which come in four colors: black, cyan, magenta, and yellow. When choosing between standard and high yield cartridges, consider that the XL versions print more pages - about 1100 per cartridge - compared to the standard versions which print around 300 pages each. For those looking for cost-effective options, third-party compatible ink cartridges are available as there is no firmware DRM on record.
Compatible cartridges
| Cartridge | Color | Yield | Pages | OEM price | Cost/page | |
|---|---|---|---|---|---|---|
| Epson 812XL | black | XL | 1100 | $42.00 | 3.8¢ | OEM · AmazonCompatible |
| Epson 812XL | cyan | XL | 1100 | $32.00 | 2.9¢ | OEM · AmazonCompatible |
| Epson 812XL | magenta | XL | 1100 | $32.00 | 2.9¢ | OEM · AmazonCompatible |
| Epson 812XL | yellow | XL | 1100 | $32.00 | 2.9¢ | OEM · AmazonCompatible |
| Epson 812 | black | standard | 300 | $25.00 | 8.3¢ | OEM · AmazonCompatible |
| Epson 812 | cyan | standard | 300 | $22.00 | 7.3¢ | OEM · AmazonCompatible |
| Epson 812 | magenta | standard | 300 | $22.00 | 7.3¢ | OEM · AmazonCompatible |
| Epson 812 | yellow | standard | 300 | $22.00 | 7.3¢ | OEM · AmazonCompatible |
XL (high-yield) cartridges cost more upfront but lower the cost per page, which is better if you print a lot.
The Epson WorkForce Pro WF-7840 is not on our firmware-lockout list, so third-party ink should work. By list price its high-yield Epson 812XL works out to about 2.9 cents per page, roughly 60% less than the 7.3 cents of the standard Epson 812. If you print often the high-yield cartridge is the better value, and a well-reviewed compatible version lowers the cost further.
Frequently asked questions
Which ink does the Epson WorkForce Pro WF-7840 use?
The Epson WorkForce Pro WF-7840 uses Epson 812 and Epson 812XL.
Does the Epson WorkForce Pro WF-7840 take XL cartridges?
Yes. Besides the standard cartridges it accepts Epson 812XL. A high-yield XL holds more ink and costs less per page, which is worth it if you print often.
Will third-party ink work in the Epson WorkForce Pro WF-7840, or will firmware block it?
The Epson WorkForce Pro WF-7840 is not on our firmware-lockout list, so compatible and remanufactured cartridges should work. Firmware can change with an update, so it is worth checking before buying a large supply.
How many pages do the Epson WorkForce Pro WF-7840 cartridges print?
Rated yields are the Epson 812 at about 300 pages and the Epson 812XL at about 1100 pages. Real-world yield depends on how much you print and how much ink each page uses.
What is the cheapest ink for the Epson WorkForce Pro WF-7840?
By list price the lowest cost per page here is the Epson 812XL at about 2.9 cents per page. A reliable compatible or remanufactured cartridge can lower that further.
Related Epson WorkForce Pro printers
- Epson WorkForce Pro WF-3820
- Epson WorkForce Pro WF-4720
- Epson WorkForce Pro WF-4740
- Epson WorkForce Pro WF-7820
Last reviewed . Compiled by MyCartridgeFinder from manufacturer cartridge finders and retailer cross reference tables, then checked against this printer's database record. Cartridge numbers and yields come from that record, never from guesswork. See our methodology and data sources.