Fujitsu DL3750+/3850+ User Manual page 245

Tractor feed
Unidirectional printing
USB interface
User's Manual
A method for feeding continuous forms forward for printing.
Holes on the sides of the forms fit over sprockets on two tractors
located inside the printer. The forms are pushed for rear feeding.
Printing is performed in one direction only, left to right.
Unidirectional printing is slower than bidirectional printing, but
the vertical alignment is more accurate. Unidirectional printing is
useful when precise vertical alignment is required, as in ruled
tables.
A serial bus standard. An abbreviation of Universal Serial
Bus.HotSwap using Plug&Play is available. The maximum cable
length is five meters.
The transmission mode is 12 Mbps + 0.25% at full speed.
GLOSSARY OF TERMS
GL-7