| Print speed: | 50 ppm |
| Print resolution: | up to 2400 dpi |
| Recommended monthly volume: | 250,000 pages |
| Memory: | 128 MB, up to 640 MB |
| Duplex printing: | No |
| Paper handling: |
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| Interface: |
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| OS compatibility: |
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| Dimensions: | 21 x 17.2 x 20.6 in. |
Toner Cartridges, Maintenance Kits and Parts

35 Items
Black Genuine Toner Cartridge Extra High Yield, 32,000 pages
Black Genuine Toner Cartridge Extra High Yield, 32,000 pages
Black Genuine Toner Cartridge Extra High Yield, 32,000 pages
Black Genuine Toner Cartridge For Labels Extra High Yield, 32,000 pages, Return Program
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 High Yield, 32,000 pages
Black Genuine Toner Cartridge High Yield, 21,000 pages
Black Genuine Toner Cartridge High Yield, 21,000 pages
Black Genuine Toner Cartridge High Yield, 21,000 pages, Return Program
Black Genuine Toner Cartridge For Labels High Yield, 21,000 pages, Return Program
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 Lower Front Cover Assembly
Genuine Exit Sensor Assembly
Genuine Input Sensor
Genuine Toner Sensor Assembly
Genuine Maintenance Kit 300,000 pages, 220 volt
Genuine Printhead Assembly
Genuine Redrive Assembly
Genuine Operator Panel Board Assembly
Genuine Fuser Cover Assembly Kit
Genuine Tray 2 Pick ARM Assembly Standard Yield
Genuine Maintenance Kit Standard Yield, 300,000 pages, 110 volt
Genuine Fuser Assembly Standard Yield, 110 volt
Remanufactured Toner Cartridge
Black Remanufactured Toner Cartridge High Yield, 21,000 pages
Black Remanufactured Toner Cartridge Standard Yield, 21,000 pages
The T644tn uses LEX 64015SA, LEX 64015HA, LEX 64035HA, LEX 64415XA, LEX 64004HA, LEX 64435XA, LEX 64404XA, LEX 64075HA, LEX 64080XW, LEX 64475XA, LEX 64035SA, LEX 64075SW, CTC 64404XA, LEX 64080HW, LEX 64084HW, LEX 64419XG, LEX 64440XW toner cartridges. LEX 64015SA yields 6000 pages; LEX 64015HA yields 21000 pages; LEX 64035HA yields 21000 pages; LEX 64415XA yields 21000 pages; LEX 64004HA yields 21000 pages; LEX 64435XA yields 32000 pages; LEX 64404XA yields 32000 pages; LEX 64075HA yields 21000 pages; LEX 64080XW yields 21000 pages; LEX 64475XA yields 32000 pages; LEX 64035SA yields 6000 pages; LEX 64075SW yields 6000 pages; LEX 64080HW yields 21000 pages; LEX 64084HW yields 21000 pages; LEX 64419XG yields 32000 pages; LEX 64440XW yields 32000 pages.
LEX 64015SA prints 6000 pages, LEX 64435XA prints 32000 pages. Choose LEX 64435XA for high-volume printing (lower cost per page); LEX 64015SA costs less upfront for occasional use.
The LEX 64404XA cartridge has an approximate yield of 32000 pages.
Yes — the replacement fuser for the T644tn is: LEX 40X2592, LEX 40X2665, LEX 40X0121.
The T644tn uses these maintenance parts: LEX 40X0100, LEX 40X0101.
The "Supply Problem" notice on the T644tn is typically a recognition fault, not a defective cartridge. Start by turning the printer off for 30 seconds. Reseat the cartridge, clean its chip contacts with a dry cloth, then power back on. If nothing changes, the fix is a fresh LEX 64404XA.