Duplex Printing; Resolution Improvement Technology (Ritech) - Epson AcuLaser C1900 Reference Manual

For Windows, see "Using the predefined settings" on page 51. For
Macintosh, see "Using the predefined settings" on page 111.

Duplex printing

EPSON provides optional Duplex Unit, allowing you to easily
print on both sides of the page. You can produce professional
quality double-sided documents. Use this feature with any print
job to cut costs and save resources.

Resolution Improvement Technology (RITech)

Resolution Improvement Technology (RITech) is an original
EPSON printer technology that improves the appearance of
printed lines, text, and graphics. RITech is also applied to color
printing.
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Printer Parts