Canon 9900f scanner not recognized by Adobe Photoshop

According to Canon it is not supported.
Issue: Does my product support Mac OS X 10.5 (Leopard)?
but here is a link to try.
http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&tabact=SupportDetailTabAct&fcategoryid=235&modelid=8743#DownloadDetailAct
Solution: Mac OS X 10.5 (Leopard) Compatibility information (Non-Compatible Scanners)

Mac OS X 10.5 (Leopard) Compatibility information (Non-Compatible Scanners) Unfortunately, the chosen scanner model is not supported with Mac OS X 10.5 (Leopard). For models that are supported, please see the information below.
Compatible Scanner Models Drivers to support Mac OS X 10.5 will be available for the below models. Visit the Canon download site for the most up to date versions of the product's drivers and software.
4400F
9950F
LiDE 70
8400F
LiDE 25
LiDE 90
8600F
LiDE 35
LiDE 500F
8800F
LiDE 60
LiDE 600F

• Scanner models released after 2007 will be compatible unless otherwise noted.
• For scanners missing from the list above, if it was released prior to 2007, then it will not be supported in Mac OS X 10.5 Leopard.