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Interfaces
Type:
Logic Levels:
Transfer Rates:
Printing Speed
The printing speed of text is measured in lines per minute (lpm) and is a function of the selected font and
the vertical dot density. Printing speed is independent of the number of characters configured in the
character set repertoire. Print rates for lines containing attributes such as bold or emphasized printing,
superscripts, subscripts, or elongated attributes will decrease to not less than half the rates of the font
without such attributes. The exact print rate of lines containing these attributes depends on the specific
print job, but software maximizes the throughput by dynamically determining which dot rows contain
adjacent dots and must be printed in two strokes.
The reverse paper feed capability allows the printing of multiple densities on a single line. This is useful in
printing forms and text together or in mixing different fonts on a print line. Use of multiple densities and
reverse paper feed also affects throughput.
290
Standard:
USB 2.0 Universal Serial Bus
RS-232 serial
Ethernet 10/100Base-T
Optional:
IEEE 1284 Parallel
Centronics Parallel
TTL/EIA
Up to 200 Kilobytes on parallel interface.
Up to 115.2K baud on RS-232 serial interface.
®
-232E/EIA-422B
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