Lexmark X422 User Reference Manual page 77

Media specifications and guidelines
3
Locate the stack height limiter. Do not exceed the maximum stack height by forcing print
media under the stack height limiter. The maximum stack height for any print media is 10 mm
(0.4 in.). Overfilling the multipurpose feeder could cause jams.
Stack height limiter
Note: See Print media source specifications
4
Load the print media.
• Load paper and card stock with the recommended print side face up and the top edge
entering first.
Print media specifications and guidelines
77
for more information.