The HP CF244A (44A) toner cartridge is used in the ultra-compact HP LaserJet Pro M15 and MFP M28 series. Due to its small size, this cartridge has a limited toner capacity, making refilling a highly cost-effective solution. To maintain crisp print quality, you must follow a clean disassembly process and use high-grade chemical toner.
Technical Video Walkthrough
Required Tools for the Repair
To ensure a successful refill without damaging the cartridge casing, prepare the following:
- Small Flat-head Screwdriver – To release the side clips and separate the halves.
- Precision Phillips Screwdriver – For removing the doctor blade and wiper blade screws.
- Needle-nose Pliers – To remove the side springs carefully.
- Toner Vacuum – Essential for removing all old waste toner.
- Replacement Toner Cartridges – For optimal results, you can use ready-to-use toner cartridges.
Step-by-Step Module Replacement & Maintenance
1. Separating the Cartridge Sections
The HP CF244A is a split-design cartridge. You need to remove the side tension springs and unclip the plastic housing to separate the waste toner hopper from the supply section. This design is very similar to other modern HP compact models, such as the one described in our HP 106A/105A toner refill guide.
2. Servicing the Waste Toner Hopper
Emptying the waste hopper is mandatory. A full waste section will cause gray background shading or vertical streaks on your pages. While the hopper is open, inspect the Wiper Blade for nicks or wear. For a similar maintenance approach on slightly larger cartridges, refer to our guide on refilling HP 85A and Canon 725 cartridges.
3. Cleaning the Magnetic Roller and Doctor Blade
Toner buildup on the Doctor Blade is the primary cause of faint prints. Clean the edge of the blade with a cotton swab and isopropyl alcohol. Ensure the Magnetic Roller is free of old toner crust to maintain even distribution.
4. Refilling and Chip Considerations
Fill the supply hopper with the correct amount of toner (do not overfill). The HP 44A cartridge uses a chip to monitor levels. In most cases, the printer will continue to print with the “Low Toner” message even if you don’t replace the chip, but for professional results and full functionality, a new chip is recommended.
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Professional Advice: Always apply a small amount of lubricating powder to the Wiper Blade before reassembling the OPC Drum. This prevents the blade from sticking and damaging the drum surface during the first rotation.