You can use
the printer software to change the time period before the product
enters sleep mode.
Do one of the following:
Mac OS X 10.6/10.7/10.8: In the Apple menu or
the Dock, select System
Preferences. Select Print &
Fax or Print & Scan,
select your product, and select Options
& Supplies. Select Utility and select Open Printer Utility.
Mac OS X 10.5: In the Apple menu or the Dock,
select System Preferences. Select
Print & Fax, select your
product, and select Open Print
Queue. Select Utility.
Click Printer
Settings. You see this window:
Select the time period you want as the Sleep Timer
setting.