HP 2425 - Manual (Page 52)

3ULQWLQJ'XSOH[
406785%23ULQW6\VWHP2SHUDWLRQ 
+LJK5HVROXWLRQDQG'XSOH[3ULQWLQJ
If your printer has the optional duplexer, duplexing option, you can
print on any of the media sizes at 300x300 dpi. However, printing
duplex via the cassettes at 600x600 dpi resolutions may require addi-
tional memory. (See the memory table in the previous section for
each resolution/media size memory requirement).
'XSOH[3ULQWLQJ7LSV
„
Select paper with high opacity for duplex printing. Opacity refers
to how much paper blocks out what is written on the opposite side
of the page. Paper with high opacity has low transparency. If
paper has low opacity (high transparency), then the printed data
from one side of the page will show through to the other side. For
best results, test a small quantity to make sure the opacity is
acceptable.
„ For duplex printing on pre-printed letterheads, place the sheet
face-down with the bottom of the page inserted first. In the duplex
mode, the printer prints side two first, then side one.