HP Color LaserJet Enterprise Flow M776z All-In-One Laser Printer - Manual (Page 36)

3. Use the blue adjustment latch to spread the paper
guides to the correct size, and then load paper in
the tray. For information about how to orient the
paper, see Tray 1 paper orientation on page 22 .
Make sure that the paper fits under the fill line on
the paper guides.
NOTE: The maximum stack height is 10 mm (0.4
in), or approximately 100 sheets of 75 g/m2 (20 lb)
paper.
4. Using the blue adjustment latch, adjust the side
guides so that they lightly touch the paper stack,
but do not bend it.
Tray 1 paper orientation
Position paper correctly in Tray 1 to ensure the best print quality.
Table 2-1 Letterhead or preprinted—portrait
Duplex mode Paper size How to load paper
1-sided printing 12x18, 11x17, RA3, SRA3, A3, 8K
(273x394 mm), 8K (270x390 mm), 8K
(260x368 mm), B4 (JIS), Legal, Oficio
(8.5x13), Oficio (216x340 mm), SRA4, RA4,
A4, Letter
Face-down
Bottom edge leading into the printer
22 Chapter 2 Paper trays ENWW