If you enter this username for the first time:
Click the Keychain button to ask Keychain for this username.
Keychain shows a red warning mark indicating this username is unknown.
Enter the password into the password field.
To submit the password to Keychain hit TAB or click the blue Submit button.
MacOS 9 Printing • 79
Konica Minolta bizhub PRO 1050 Printer Driver