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Hint
In Windows 8.1, it is registered at the following location.
2
Click [Canon DR-M140 USB] and click [Properties].
Scanner properties are displayed.
3
Click the [Maintenance] tab and then clear the [Turn off
automatically after 4 hours] check box.
4
Click [OK] to close the scanner properties.
(The [Event] tab may not
be displayed, depending
on the model.)