HP LaserJet Enterprise 700 color MFP M775 series - Manual (Page 49)

Table 3-3 Tray 1 paper orientation (continued)
Paper type Image orientation Duplex mode How to load paper
Preprinted or letterhead Landscape 1-sided printing Face down
Top edge toward the back of the product
Automatic 2-sided printing Face up
Top edge toward the back of the product
Envelopes Short edge of the envelope
feeding into the product 1-sided printing Face down
Top edge toward the back of the product
ENWW Tray 1 35