Epson WorkForce Pro WF-3820 Ink Cartridges
Your Epson WorkForce Pro WF-3820 uses the 812 / 812XL / 812XXL ink cartridge series, operating on an individual four-colour DURABrite Ultra ink system. Having supplied consumables for this printer since Sep 2020, we observe that small office environments heavily drain the black channel first while maintaining steady colour usage. Switching to high-capacity options dramatically cuts intervention frequency. Our 4.8 Google rating reflects a long-standing track record of premium cartridge performance.
Expected page output and replacement cycles
Standard 812 cartridges yield approximately 350 pages for black and 300 pages for colour, while high-yield 812XL capacity steps up to 1,100 pages per cartridge based on ISO/IEC 24711 testing standards. High-volume business users usually migrate straight to XL or XXL capacities to lower cost-per-page on heavy document runs.
| Cartridge Number | Type | Colour | Page Yield | Cost Per Page |
|---|---|---|---|---|
| 812 | Standard | Black | 350 | $0.089 |
| 812 | Standard | Cyan | 300 | $0.098 |
| 812 | Standard | Magenta | 300 | $0.098 |
| 812 | Standard | Yellow | 300 | $0.098 |
| 812XL | High Yield | Black | 1,100 | $0.046 |
| 812XL | High Yield | Cyan | 1,100 | $0.044 |
| 812XL | High Yield | Magenta | 1,100 | $0.044 |
| 812XL | High Yield | Yellow | 1,100 | $0.044 |
Cost Per Page = Total Cartridge Price ÷ Page Yield (at 5% coverage). Prices based on Genuine cartridges.
Choosing between genuine and compatible cartridges
For offices looking to stretch their printing budgets, compatible 812XL cartridges deliver identical page yields and colour quality at a significantly lower purchase point. Under Australian Consumer Law, using compatible cartridges does not void your printer warranty. Learn more about performance differences in our genuine vs compatible cartridges guide.
Choosing the right cartridge setup
If your daily workflow consists mainly of text documents and invoices, ordering individual 812XL or 812XXL black cartridges alongside a standard colour set keeps your initial spend balanced. For mixed office environments printing reports with heavy graphics, multi-packs offer the best overall economy. All compatible units come backed by our money-back guarantee. Standard orders ship directly from local warehouses in Perth, Brisbane, Sydney, Melbourne, and Adelaide. Free delivery applies on all orders over $99. Explore our full range of Epson ink cartridges or review our returns policy for complete peace of mind.
Pro Tip
Replacing cartridges as individual colours run out prevents ink waste, but always ensure printhead alignment is performed via the printer menu after installing mixed genuine and compatible cartridges.
Frequently Asked Questions
Can I mix standard 812 and high-yield 812XL cartridges in the printer at the same time?
Yes, the Epson WorkForce Pro WF-3820 accepts any mix of standard 812, 812XL, and 812XXL cartridges across the four individual slots without causing recognition errors or print quality issues.
Why does my colour ink drain even when I print mostly in black and white?
The printer uses small amounts of colour ink during automatic printhead maintenance cycles and routine priming to prevent nozzle clogs. Selecting 'Greyscale' in your print driver settings minimises, but does not completely eliminate, colour depletion.
What is the functional difference between 812XL and 812XXL cartridges?
Both cartridge sizes share the exact same physical housing dimensions to fit the printhead carriage, but the XXL variant holds a significantly larger volume of ink, specifically designed to reduce cost-per-page for heavy office printing.
