Canon Bulk / Flatbed Sleep Setting
Canon Scanner is Powering off / Sleeping.
1: Locate and open the Canon Driver Settings tool
Canon Driver Settings Tool
2: Navigate to the "Control" Tab:
Control Tab - Canon Driver Setings
3: Click "Hardware" -> "Setting..." :
Hardware Setting
4: Within the "Control" Tab toggle "Turn off automatically after 4 hours" :
Control - Power Management
5: Click "Ok"