T640
The Lexmark T640 is the workhorse that launched the whole 640-class family, a mono laser printer that offices ran for years without giving it a second thought. Legendary reliability and a straightforward paper path made it a fixture in countless supply closets and back offices. It feeds on the 640H high-yield cartridge, so replacement intervals stay generous and stocking stays simple. If your T640 still runs — and most do — compatible 640H toner keeps it printing like the day it arrived.
| Cartridge | Color | Page yield |
|---|---|---|
| 640H (64015HA / 64035HA) | Black | ~21,000 pages |
Frequently asked questions
Which toner does the Lexmark T640 use?
The Lexmark T640 uses the Lexmark 640H high-yield black toner cartridge (OEM 64015HA or 64035HA).
How many pages will one 640H cartridge print in the T640?
About 21,000 pages at 5% coverage (ISO/IEC 19752).
Will a compatible 640H cartridge damage my T640 or void its warranty?
No. Compatible cartridges are built to OEM specifications and do not void your printer’s warranty.
What is the difference between the 64015HA and 64035HA cartridges for the T640?
The 64015HA is a Lexmark Return Program cartridge — sold at a lower price in exchange for returning the empty cartridge to Lexmark for recycling. The 64035HA is the regular version. Both print about 21,000 pages in the T640.