Epson AcuLaser C9100 Reference Manual page 349

Orientation
Specifies whether the page is printed in portrait or landscape
orientation.
Resolution
Specifies the printing resolution.
RITech
Turning RITech on produces smoother and crisper lines, text, and
graphics.
Toner Save
When this setting is selected, the printer saves toner by
substituting a gray shade for the black inside of characters. The
characters are outlined in full black on the right and lower edges.
Image Optimum
When this mode is on, the quality of graphics is reduced. It
reduces the amount of graphics data when the data reaches the
memory limit, allowing complex documents to be printed.
Top Offset
Makes fine adjustments to the vertical printing position of the
page.
Caution:
c
Make sure that the printed image does not extend beyond the edge
of the paper. Otherwise, you may damage the printer.
Functions of the Control Panel
B
B
B
B
B
B
B
B
B
B
B
B
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