Canon PIXMA MG2525 All-in-One Inkjet Printer (Black) - Manual (Page 158)

Scanner Driver Does Not Start
Check 1: Make sure that the scanner driver is installed.
If not installed, install the scanner driver from the web page.
Check 2: Select your scanner or printer on the application's
menu.
Note
The operation may differ depending on the application.
Check 3: Make sure that the application supports the ICA
(Image Capture Architecture) driver.
You cannot start the scanner driver from applications not supporting the ICA driver.
Check 4: Scan and save images with IJ Scan Utility and open
the files in your application.
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