Print jobs from an HP DesignJet or PageWide XL device appear with "unknown" username.
Enable logging of user name in HP job accounting.
- In a web browser, enter the IP address of the HP large format device.
- In the web UI, click on the Setup tab.
- Under the Configuration section, click Security.
- On the Security page, scroll down to the Accounting section, check the box next to Show user name in job accounting. Click Modify to save the change.