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What Ink Does the Epson WF-7840 Use?
What Ink Does the Epson WF-7840 Use?
September 23, 2026 —
Quick answer: The Epson WorkForce Pro WF-7840 uses four individual Epson 812 DURABrite Ultra pigment cartridges: Black, Cyan, Magenta and Yellow. The high-capacity Epson 812XL cartridges fit the sa...
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Epson Maintenance Box: Where It Is, When to Replace It, and Which One You Need (T04D1, C9345, C9344)
Epson Maintenance Box: Where It Is, When to Replace It, and Which One You Need (T04D1, C9345, C9344)
September 27, 2026 —
Published September 27, 2026. Written by William Elward, founder of Castle Ink.
Quick answer
An Epson maintenance box is a replaceable waste-ink container. It collects the ink the printer flushes d...
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Find Ink by Printer
Find Ink by Printer
May 21, 2026 —
Castle Ink Cartridge Finder
Find the exact ink or toner cartridge for your printer in seconds, organized by brand and series below.
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September 27, 2026 — Published September 27, 2026. Written by William Elward, founder of Castle Ink. Quick answer An Epson maintenance box is a replaceable waste-ink container. It collects the ink the printer flushes d...