Canon imageRUNNER C3489 Reference Manual page 267

If you set <Allow Black Copy/Inbox Print Jobs> to 'On', [Black Copy/Black Inbox
Print] appears on the screen for entering the Department ID and password.
To copy or print in black-and-white, press [Allow Black Copy/Black Inbox Print].
NOTE
•
If you set <Allow Printer Jobs with Unknown IDs> to 'On', all print jobs are
accepted. Therefore, the Allow Black Printer Jobs setting is ignored.
•
To copy or print in the Auto-Color Select or Single Color mode, store an original in
an inbox, send a document, or use any other function except black-and-white
copying and printing, you must enter a Department ID and password.
•
If you selected [On] in step 2, pressing [OK] activates Department ID Management.
Department ID Management
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