You can scan by starting the scanner driver from various applications.
Refer to Help of Mac OS for how to scan.
When scanning with the scanner driver in Mac OS X v10.6.8, select JPEG or TIFF in Format. Scanned images are saved in the format set in Data Format in the Settings (Driver) dialog of IJ Scan Utility.
Refer to "Image Corrections and Color Adjustments" for details on the setting procedures for image correction and color adjustment.
Refer to "General Notes (Scanner Driver)" for the scanner driver.
Refer to "Updating the Scanner Driver" for the scanner driver.
In the Settings (Driver) dialog of IJ Scan Utility, you can also make advanced settings for scanning with the scanner driver.