Question about HP LaserJet 4100 Printer
To automatically duplex, you need the optional duplexing mechanism.
If you don't have this, your only option is to print the odd pages first, put the papers back in the tray, then print the even pages.
When you put the pages back into the paper tray, make sure they are print side up.
Try with a 5 or 6 page document first to be sure you get the orientation right.
If you HAVE the optional duplexing unit (which sticks out the front just above the main paper tray) then post a reply here and I'll try to help you further.
99% of the people that own this unit do NOT have the optional duplexer!
Posted on Mar 12, 2011
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Posted on Jan 02, 2017
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