Canon Pixma MG2500 Series Online Manual page 106

Auto Power On
Specifying Enable from the list will turn the machine on upon receipt of print data.
Auto Power Off
Specify the time from the list. When this time lapses without any operations from the
printer driver or the machine, the machine is turned off automatically.
4. Apply the settings
The setting is enabled after this. When you want to disable this function, select
Disable from the list according to the same procedure.
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