| 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: | Standard |
| Paper handling: |
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| Interface: |
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| OS compatibility: |
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| Dimensions: | 23.1 x 17.2 x 20.6 in. |
Toner Cartridges, Maintenance Kits and Parts

36 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 Maintenance Kit 300,000 pages, 220 volt
Genuine Exit Sensor Assembly
Genuine Input Sensor
Genuine Toner Sensor Assembly
Genuine Lower Front Cover Assembly
Genuine Printhead Assembly
Genuine Redrive Assembly
Genuine Operator Panel Board Assembly
Genuine Fuser Cover Assembly Kit
Gray Genuine Fuser
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 T644dtn uses 16 toner cartridges, including LEX 64015SA, LEX 64015HA and LEX 64035HA.
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 T644dtn is: LEX 40X2592, LEX 40X2665, LEX 40X0121, LEX 40X2666.
The T644dtn uses these maintenance parts: LEX 40X0100, LEX 40X0101.
A "Supply Problem" message on the T644dtn usually points to a chip-communication hiccup rather than an empty cartridge. Power-cycle the printer (off for 30 seconds, then on), reseat the cartridge until it clicks into place, and gently clean the gold chip contacts with a dry cloth. If the message returns, a replacement LEX 64404XA will clear it.