HP LaserJet 1100 All-in-One Printer series - Manual (Page 46)

36 Chapter 4 Printing tasks EN
Printing with manual feed
Use manual feed when printing mixed media; for example, an
envelope, then a letter, then an envelope, and so forth. Load an
envelope in the single sheet paper input tray and load letterhead in
the multiple-page paper input tray. Also, use manual feed to protect
your privacy when printing to a network printer.
To print using manual feed, you must access the printer properties or
printer setup in your software application and select Manual Feed
from the Source drop down list. See “Printer properties (driver).” After
the setting has been enabled, you must press the Go button (blinking)
each time to print.