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Cartridge HP Ink 3YL78AE 912 Magenta
The HP Ink 3YL78AE / 912 Magenta cartridge delivers vibrant colour prints and reliable performance for everyday and professional printing. This Original HP cartridge is designed for easy installation and provides consistent colour output and page yields suitable for offices and workgroups. Compatible with several HP OfficeJet and OfficeJet Pro models, the cartridge supports printing of documents and images with magenta ink.
Original HP 912 ink cartridges offer consistent, factory-tested print quality and are designed specifically for compatible HP printers to ensure reliable operation. The magenta cartridge yields approximately 315 pages and comes as a single cartridge in the box. Tested Original HP cartridges printed, on average, more than twice the pages of non-HP cartridges in controlled tests. The cartridges are available in individual inks and high-yield options and are compatible with HP Instant Ink subscription for simplified ink replacement.
Turn on the printer and open the cartridge access door. Remove the used cartridge if present, then unpack the new HP 912 Magenta cartridge and remove any protective tape or packaging. Insert the cartridge into the magenta slot until it clicks into place, then close the access door. Follow on-screen prompts on the printer to align or prepare the cartridge if required. Use the printer driver or control panel to check ink levels and perform a test print.
Store unused cartridges in a cool, dry place and install them before the stated expiry date. For best results, use Original HP cartridges and follow printer maintenance guidelines. Consider HP Instant Ink for automated replacement if you want predictable supply and simplified ordering.
Be assured that Original HP Cartridges will consistently deliver quality results and premium performance.[6]

Experience premium print quality with Original HP Cartridges designed for vibrant colour, crisp text, and rich blacks for big impact.

Print with confidence – Original HP Cartridges designed with the planet in mind for easy recycling and less waste.[7]

Original HP Cartridges are the only cartridges precisely developed with HP printers for reliable quality, results, and consistent performance.

Original HP ink cartridges are offered in different page yield sizes to match your printing volume and ease of use. Choose among standard and high yield cartridges.

Achieve outstanding performance and high-quality prints at fast speeds with HP proprietary inks.

Impress with professional-quality business documents featuring brilliant, vivid colour. Print vibrant graphics and images, using pigment inks designed for the office.

Print colour reports, emails, proposals, and other business documents on a variety of papers.

Count on HP prints on plain papers using HP pigment inks for HP OfficeJet and HP OfficeJet Pro printers to stay legible and useful for many years.[1]

Print 2x more pages and replace cartridges less often, using optional Original HP high-yield ink cartridges.[2]

Save time with HP Smart app. Know when you are running low and easily order ink from your smartphone.[8]

Easily replace cartridges in a snap and tackle high-volume print jobs without interruptions. Original HP ink cartridges make it simple to keep printing.

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| Warehouse | Stock | Delivery to the store | Store Price | |
| EU4 | 13 | 13.07.2026 | 13.49 € | |
| EU9 | 68 | 29.06.2026 | 13.99 € | |
| EU9 | 159 | 29.06.2026 | 13.99 € | |
| WH15 | 161 | 29.06.2026 | 14.99 € |
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