Hibernate Timeout lets you set the amount of time the printer waits after a print job is processed before it goes into a reduced power state.
Using the Embedded Web Server
Open a Web browser, and then type the printer IP address in the address field.
> General Settings
From the Hibernate Timeout menu, select the number of hours, days, weeks, or months you want for the printer to wait before it goes into a reduced power state.
Using the printer settings on the computer