Using Scanner Buttons in Mac OS X 10.3/10.2.8
 
In order to start CanoScan Toolbox automatically in Mac OS X 10.3 or 10.2.8 when a scanner button is pressed, you need to set the scanner buttons to work with CanoScan Toolbox first.
 
Before performing this procedure, make sure that CanoScan Toolbox is installed, and that the scanner is connected to your computer.

- Mac OS X 10.3
1. Open the [Applications] folder in the hard disk and double-click Image Capture. The preview scan automatically starts.
2. Click [Options].
3. Select [CanoScan Toolbox] in [When a scanner button is pressed, open:] on the [Settings] screen.
4. Click [OK] and quit [Image Capture].
CanoScan Toolbox starts automatically the next time you press a scanner button.
 
If you see a TWAIN screen when [Image Capture] is started, do the following to deselect TWAIN software.
1. Select [Preferences] from the [Image Capture] menu.
2.

Remove the checkmark from [Use TWAIN software when possible.] on the [Scanner] screen.

3. Click [OK] and quit [Image Capture]. If you restart [Image Capture], the preview scan starts.

- Mac OS X 10.2.8
1. Open the [Applications] folder in the hard disk and double-click [Image Capture]. The preview scan automatically starts.
2. Select [Preferences] from the [Image Capture] menu.
3. Select [Other] in [When a scanner button is pressed, open:].
4. Select CanoScan Toolbox in the file selection dialog box.
5. Click [Open] and quit [Image Capture].
CanoScan Toolbox starts automatically the next time you press a scanner button.