Konica Minolta Bizhub C252 Operation Manual page 211

Setting up the PostScript driver (Windows)
Note
If this machine has been set to permit public users, the machine can be
used without a user name and password.
If printing is not allowed, printing cannot be performed even when used
by a registered user.
For user authentication settings, consult the administrator of this
machine.
bizhub C252
7
7-17