HP Laserjet 1200 - Manual (Page 73)

EN Printing on both sides of the paper (manual duplexing) 71
Printing on both sides of the paper (manual
duplexing)
To print on both sides of the paper (manual duplexing), you must
run the paper through the printer twice. You can print using the
media output bin or the straight-through output path.
Hewlett-Packard recommends that you use the media output bin
for lightweight paper and use the straight-through output path for
any heavy media or media that curls when printed.
See the following topics for more information:
● Manual duplex using the output bin
● Manual duplex on heavy media or card stock
Note Manual duplexing is only supported in Windows.
Note Manual duplexing can cause the printer to become dirty, reducing print
quality. See
Cleaning the printer for instructions if the printer becomes
dirty.