Sharp MX-3610N User Manual page 1147

Information Printing
Disable Direct Entry
Contrast
Set a character contrast. The black, magenta, and cyan can be set in any of 9 levels.
Store Print Characters
Stores the user-created print characters. Up to 30 characters can be stored.
Index
Serial number, account job ID, login name/user number,
number of copy control, date and time
Directly enters the user name.
This setting is ignored if [Pre-set Text] is enabled.
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