T644
At the top of the T64x line, the Lexmark T644 delivered the fastest mono printing of the family for departments with serious daily volume. Its engine was built for sustained duty cycles that would have overwhelmed lesser machines. Everything about it was scaled up, except toner complexity — it uses the same 640H high-yield cartridge as its smaller siblings. Compatible 640H toner keeps even this top-tier printer cheap to run.
| Cartridge | Color | Page yield |
|---|---|---|
| 640H (64015HA / 64035HA) | Black | ~21,000 pages |
Frequently asked questions
Which toner does the Lexmark T644 use?
The Lexmark T644 uses the Lexmark 640H high-yield black toner cartridge (OEM 64015HA or 64035HA).
How many pages will one 640H cartridge print in the T644?
About 21,000 pages at 5% coverage (ISO/IEC 19752).
Will a compatible 640H cartridge damage my T644 or void its warranty?
No. Compatible cartridges are built to OEM specifications and do not void your printer’s warranty.
Can I use a 640H cartridge bought for a T640 in my T644?
Yes. The 640H family is shared across the Lexmark T640, T642, T644, X642, X644 and X646 series, so any 640H cartridge fits your T644.