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Brother Fuser Unit: Signs It's Failing and How to Replace It
Brother Fuser Unit: Signs It's Failing and How to Replace It
August 10, 2026 —
If your Brother laser printer is producing smudged, streaky, or wrinkled pages, the fuser unit is usually the part to blame. Here's what triggers Brother fuser problems, the part numbers to look fo...
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How the CastleScore Works — Methodology
How the CastleScore Works — Methodology
August 13, 2026 —
Castle Ink · Methodology
How the CastleScore works
An independent 0–100 rating for every printer we cover — blended from six weighted pillars, refreshed every month, ...
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What Ink Does the Canon PIXMA G2200 Use?
What Ink Does the Canon PIXMA G2200 Use?
September 6, 2026 —
Quick answer: the Canon PIXMA G2200 MegaTank uses GI-290 ink bottles. Four bottles, one per tank, and there is no XL tier — one size per colour.
Said plainly before you order: replacement print he...
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What Ink Does the HP OfficeJet 4500 Use?
What Ink Does the HP OfficeJet 4500 Use?
October 3, 2026 —
Quick answer: The HP OfficeJet 4500 uses HP 901 ink: one black and one tri-color cartridge. For more pages per cartridge choose the high-yield HP 901XL Black (about 700 pages) with the standard HP ...
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How to Stop HP Firmware Updates From Blocking Your Ink
How to Stop HP Firmware Updates From Blocking Your Ink
June 20, 2026 —
If you've bought an HP printer in the last few years, you may have run into this: you install a compatible ink cartridge, and suddenly your printer won't print. It shows an error like "cartridge pr...
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What Is a Waste Toner Box? When (and How) to Replace It
What Is a Waste Toner Box? When (and How) to Replace It
August 10, 2026 —
Color laser printers and copiers eventually show a "waste toner box full" message even when the toner cartridges themselves are fine. Here's what that box actually is, what happens if you ignore th...
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What Toner Does the HP LaserJet Pro M402dn Use?
What Toner Does the HP LaserJet Pro M402dn Use?
May 24, 2026 —
Quick answer: The HP LaserJet Pro M402dn uses HP 26A (CF226A) (~3,100 pages) or HP 26X (CF226X) high-yield (~9,000 pages) black toner cartridges. They are the same cartridge in two capacities, and ...
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Xerox Fuser Unit: Signs It's Failing and How to Replace It
Xerox Fuser Unit: Signs It's Failing and How to Replace It
August 10, 2026 —
If your Xerox printouts are coming out smudged, streaked, or wrinkled, a worn fuser unit is often the cause. This guide covers the warning signs specific to Xerox printers, common replacement part ...
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How to Replace the Ink in a Canon Printer (PIXMA, MAXIFY & TS Series)
How to Replace the Ink in a Canon Printer (PIXMA, MAXIFY & TS Series)
May 5, 2026 —
Last updated: September 16, 2026.
Quick answer: On most Canon PIXMA and MAXIFY printers you replace ink by powering the printer on, opening the cover so the carriage slides to the center, pressing ...
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