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Lexmark T640, T642, T644: Overview of card stock and label support
Grain
Paper source
direction
Integrated tray
(grain long)
(grain short)
Optional 250-
(grain long)
sheet drawer
(grain short)
Optional 500-
(grain long)
sheet drawer
(grain short)
Multipurpose
(grain long)
2
feeder
(grain short)
1
Printing labels on the T640, T642, and T644 require a special label fuser cleaner that prevents duplexing.
It is recommended that when you run vinyl labels, you install a special oil fuser cleaner, P/N 40X2665. When you order
a new cartridge, be sure to order the cartridge that will include the correct fuser cleaner.
It is possible to duplex certain labels that have been specifically designed for this application. To duplex labels, consult
the Lexmark "Converter Lists" to see which converters have successfully developed this type of label, and you must
install a special fuser wiper. The wax wiper that is used with the T640, T642, and T644 is P/N 40X2666 (Cartridges
designed for duplex label printing contain two wax wipers. Change the wax wiper at the halfway point of your normal
cartridge usage to provide additional cleaning and optimize performance.)
2
Due to label design characteristics, unacceptable feeding may be experienced from the multipurpose feeder.
Media specifications
Labels
Thickness:
Smoothness:
* 150—250 Sheffield is optimal. Using media higher than 300 Sheffield could result in printing degradation.
Card stock
Weight:
Lexmark T640, T642, T644
Lexmark T640, T642, T644
The Lexmark T640, T642, and T644 print on many labels designed for use with laser
printers.
The following table lists the maximum basis weights supported by the trays and the
multipurpose feeder. More detailed specifications appear on the following pages.
Card stock
Index
Bristol
Tag
2
2
163 g/m
163 g/m
176 g/m
2
2
199 g/m
203 g/m
216 g/m
2
2
120 g/m
120 g/m
135 g/m
2
2
163 g/m
163 g/m
176 g/m
2
2
163 g/m
163 g/m
176 g/m
2
2
199 g/m
203 g/m
216 g/m
2
2
120 g/m
120 g/m
135 g/m
2
2
163 g/m
163 g/m
176 g/m
0.102 to 0.305 mm (0.004 to 0.012 in.)
100 to 400* Sheffield
Up to 199 g/m
Up to 203 g/m
56
Dual-web
Cover
Paper
paper
2
2
180 g/m
180 g/m
2
2
2
163 g/m
163 g/m
2
2
2
180 g/m
180 g/m
2
2
2
163 g/m
163 g/m
2
2
Index Bristol (90 lb)
2
Tag (100 lb)
1
Labels
Polyester
Vinyl
2
2
2
220 g/m
300 g/m
2
2
2
220 g/m
260 g/m
2
2
2
220 g/m
300 g/m
2
2
2
220 g/m
260 g/m
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