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What Toner Does the HP LaserJet Pro MFP 3101fdw Use?
What Toner Does the HP LaserJet Pro MFP 3101fdw Use?
October 9, 2026 —
Quick answer: The HP LaserJet Pro MFP 3101fdw uses HP 138A (W1380A, about 1,500 pages) or high-yield HP 138X (W1380X, about 4,000 pages) black toner. Castle Ink stocks compatible 138A and 138X cart...
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HP 67 vs HP 67XL: Which Ink Cartridge Should You Buy?
HP 67 vs HP 67XL: Which Ink Cartridge Should You Buy?
September 16, 2026 —
Quick answer: the HP 67XL holds roughly twice the ink of the standard HP 67 — about 240 pages vs 120 for black and 200 vs 100 for tri-color, according to HP's rated yields — and fits the exact same...
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What Ink Does the Brother MFC-J4345DW Use?
What Ink Does the Brother MFC-J4345DW Use?
September 3, 2026 —
Quick answer: the Brother MFC-J4345DW uses LC406 ink — four individual cartridges — with LC406XL as the high-yield version. There is no LC406XXL, whatever a listing tells you.
Two things to get ri...
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What Toner Does the HP LaserJet Pro M1536dnf Use?
What Toner Does the HP LaserJet Pro M1536dnf Use?
September 2, 2026 —
Quick answer: The HP LaserJet Pro M1536dnf MFP uses HP 78A black toner, part number CE278A, rated for about 2,100 pages. There is no high-yield "78X" — 78A is the only cartridge made for this machi...
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What Toner Does the Brother DCP-L2540DW Use?
What Toner Does the Brother DCP-L2540DW Use?
August 23, 2026 —
Quick answer: The Brother DCP-L2540DW uses TN630 (standard) or TN660 (high-yield) black toner, plus a separate DR630 drum unit. We sell compatible TN660 toner and compatible DR630 drums. U.S. order...
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What Ink Does the HP DeskJet 4133e Use?
What Ink Does the HP DeskJet 4133e Use?
October 14, 2026 —
Quick answer: The HP DeskJet 4133e all-in-one uses two HP 67 cartridges: one black and one tri-color. The high-yield HP 67XL versions fit too. Castle Ink stocks remanufactured 67XL Black, 67XL Tri-...
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Why Is Printer Ink So Expensive? (And How to Spend Less)
Why Is Printer Ink So Expensive? (And How to Spend Less)
August 9, 2026 —
If you've ever priced out a replacement ink cartridge and wondered how a few ounces of liquid can cost nearly as much as the printer itself, you're not imagining it. Printer ink is genuinely one of...
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What Ink Does the HP ENVY Photo 7975 Use?
What Ink Does the HP ENVY Photo 7975 Use?
September 3, 2026 —
Correction (October 2026): an earlier version of this guide described the ENVY Photo 7975 as a discontinued model with fax and an SD card slot. It is a current model, launched in October 2025, and ...
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How to Print a Poster on Multiple Pages (Free, Any Printer)
How to Print a Poster on Multiple Pages (Free, Any Printer)
September 23, 2026 —
Quick answer: save your image or design as a PDF, open it in the free Adobe Acrobat Reader, press Ctrl + P (Cmd + P on a Mac), and click Poster under Page Sizing & Handling. Raise the Tile Scal...
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September 30, 2026 — Published September 30, 2026. Written by William Elward, founder of Castle Ink. Quick answer A laser printer works with static electricity, powdered toner, and heat instead of liquid ink. A laser ...