First-to-market with-chip replacements for HP W1620A (3,000 pages) and W1620X (10,000 pages), built for the HP LaserJet Pro 4007 / MFP 4113 family in EMEA. An own-patent OPC gear design, fine chemical toner and a permanent-memory chip — engineered for distributors who need to sell without patent risk and without comebacks.
HP launched its new desktop A4 mono range in 2026, and the W1620 family is the EMEA cartridge line behind it. It replaces the previous W1490 generation on a new platform: a developer-roller (DR) architecture with non-magnetic toner and optical toner-level sensing, instead of the old magnetic-roller design. Two things follow for distributors — the installed base is only just starting to build, and the cartridges are structurally different from what most generic suppliers are still shipping.
The second driving tooth on the OPC gear uses a dot-style profile — full OEM-equivalent function, without copying OEM patent claims.
✓ Sell online and offline without takedown risk
✓ Defends your margin instead of racing to the bottom
Fine chemical toner with high-grade OPC and developer roller: smaller particles, less DR wear, low-temperature fusing that holds on both 110V and 220V.
✓ Sharp text, no black edges or vertical streaks
✓ 30% grey scale stays cleanly visible
Permanent-memory serial-number chip: recognised on install, no error codes across the whole cartridge life. Serial numbers refreshed regularly, chip stock maintained.
✓ Fast delivery on a first-to-market platform
✓ Fewer returns and support tickets
Full OEM-equivalent page yield with no density fade over cartridge life, and about 11% more printed pages per gram of toner than the previous generation.
✓ Fewer cartridge changes, less downtime
✓ Better cost per page over the contract
Supply is region-locked: each model is built for the printers sold in its own region, so please buy by printer model and market rather than by number pattern.
Because the structure and the materials both changed. The platform moved from a magnetic-roller design with physical toner to a developer-roller design with chemical toner, which fuses at a lower temperature and uses less energy, and the OPC drive head uses a new patented structure rather than the old universal-tooth design. You pay more per unit and get it back in full OEM-equivalent yield, no fade over cartridge life, and roughly 11% more pages per gram of toner.
That is exactly what the own-patent OPC gear design is for: the driving-tooth profile is our own, so the cartridge keeps full function without resting on OEM patent claims. It is the reason distributors can list these online as well as sell them through offline channels.
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