| Print speed: | 35 ppm |
| Print resolution: | 1200x1200 dpi |
| Recommended monthly volume: | 200,000 pages |
| Memory: | 64 MB, up to 576 MB |
| Duplex printing: | No |
| Paper handling: |
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| Interface: |
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| OS compatibility: |
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| Dimensions: | 13.6 x 16.6 x 19.6 in. |
Toner Cartridges, Maintenance Kits and Parts

33 Items
Genuine Toner Cartridge High Yield, 21,000 pages
Black Genuine Toner Cartridge High Yield, 21,000 pages, Return Program
Black Genuine Toner Cartridge High Yield, 21,000 pages
Black Genuine Toner Cartridge High Yield, 21,000 pages
Black Genuine Toner Cartridge For Labels High Yield, 21,000 pages, Return Program
Black Genuine Toner Cartridge High Yield, 21,000 pages
Black Genuine Toner Cartridge High Yield, 21,000 pages
Black Genuine Toner Cartridge Standard Yield, 6,000 pages, Return Program
Black Genuine Toner Cartridge Standard Yield, 6,000 pages
Black Genuine Toner Cartridge Standard Yield, 6,000 pages, Return Program
Genuine Printhead Assembly
Genuine Exit Sensor Assembly
Genuine Redrive Door Assembly
Genuine Input Sensor
Genuine Toner Sensor Assembly
Genuine Maintenance Kit 300,000 pages, 220 volt
Genuine Pick Arm Assembly
Genuine Redrive Assembly
Genuine Lower Front Cover Assembly
Genuine Pick Roll Assembly
Genuine Operator Panel Board Assembly
Genuine Fuser Cover Assembly Kit
Gray Genuine Fuser
Genuine Fuser Assembly Standard Yield, 110 volt
Genuine Maintenance Kit Standard Yield, 300,000 pages, 110 volt
Genuine Tray 2 Pick ARM Assembly Standard Yield
Black Genuine Toner Cartridge High Yield, 21,000 pages
Black Remanufactured Toner Cartridge High Yield, 21,000 pages
Black Remanufactured Toner Cartridge Standard Yield, 21,000 pages
The T640n uses 11 toner cartridges, including LEX 64015SA, LEX 64015HA and LEX 64035HA.
LEX 64015SA prints 6000 pages, LEX 64015HA prints 21000 pages. Choose LEX 64015HA for high-volume printing (lower cost per page); LEX 64015SA costs less upfront for occasional use.
The LEX 64015HA cartridge has an approximate yield of 21000 pages.
For LEX 64015HA you can choose Genuine Lexmark (LEX 64015HA) or a Remanufactured option (CTC 64015HA) at a lower price per page, same 21000 page yield. For LEX 64035HA you can choose Genuine Lexmark (LEX 64035HA) or a Remanufactured option (CTC 64035HA) at a lower price per page, same 21000 page yield.
Yes — the replacement fuser for the T640n is: LEX 40X2592, LEX 40X2665, LEX 40X0121, LEX 40X2666.
The T640n uses these maintenance parts: LEX 40X0100, LEX 40X0101.
If your T640n displays a "Supply Problem" alert, it's almost always the cartridge chip not being read correctly — not a faulty cartridge. Switch the printer off for about 30 seconds, take the cartridge out and slot it back in firmly, then wipe the small metal chip contacts with a dry, lint-free cloth. Still showing the alert? Install a fresh LEX 64015HA or reach out to our support team.