Hello... I have a Canoscan 1240U and I want to know if I can make it work with my Mac OS and how, please.

Guide to installing Canon CanoScan LiDE 35, 50 and 60 on Mac OS X 10.8. Mountain Lion:

FIRST PART: DELETING OLD LiDE DRIVERS AND SOFTWARE

• If this is the first attempt to install the scanner, skip this part

• Trash the following files/folders from these folders:

HD:/Library/Image Capture/Twain Data Sources

delete the CanoScan CanoScan XXXX.ds file

(Make note of any other files that may be in this folder. If other files are present, move them to the desktop for now. Then place them back after successfully using the scanner.)

HD:/Library/Preferences

delete the 'CanoScan XXXX' folder

HD:/Users/Shared

delete the folders containing the name CanoScan, or starting with CNQL.

HD:/Applications

delete the CanoScan Toolbox Application

HD:/Users/YOUR-MAC-USERNAME/Library/Preferences

delete any items named "CanoScan Toolbox"

• Restart your computer, then empty the trash

SECOND PART: MAKING YOUR SCANNER WORK

• Make sure your scanner is well connected

• Download the right driver depending on your Model. Also download the Scanner Software. Copy the filenames and search them via Google. Make sure you download the Canon files from an official Canon domain.

CanoScan LiDE 50 and LiDE 35 work both with the 35 driver:

lide35osx7721en.dmg

CanoScan LiDE 60 driver:

lide60osx11131en.dmg

VueScan Software:

http://www.hamrick.com/#download

VueScan 9.2 (or later) x32 for Mac OS X

Alternative to VueScan: CanoScan Toolbox. I prefer VueScan.

Try your luck with Version 4 or Version 5.

CanoScan Toolbox 4: cstbosx4934ej4.dmg

CanoScan Toolbox 5: cstbosx5014ej4.dmg

• Open the downloaded driver file (lide35osx7721en.dmg or lide60osx11131en.dmg)

• and Double-click the ScanGear file, install and restart when prompted

• Open the downloaded VueScan file (vuex3292.dmg) and drag the VueScan application to the Mac Applications folder

• Open the VueScan application. The scanner should be recognized automatically.

(Alternatively try and install CanoScan Toolbox 4 or 5)

Seems like it should work with your OS. For drivers/information, go here:

https://www.usa.canon.com/internet/portal/us/home/support/details/scanners/support-scanners-canoscan-series/canoscan-5000f#a72cde65-eaa8-479e-94a4-0e78ce832ebb_tab

Pls check if you have loaded the right 'device driver' suitable for your MAC OS X.
S. Mohan

make sure you have an installer compatible for mac os if not you can download on the internet. :)

Canon has indicated that N1220U will not be supported under Mac OS X 10.6.x (Snow Leopard). The only practical way to continue using the scanner under Snow Leopard is to buy the third party scanner software, VueScan (US$39.99).

Have a look at this site.
They are discussing scanners and Macs here>

http://macosx.com/forums/mac-os-x-system-mac-software/275856-driver-my-canoscan-4200f.html

I find the drivers by my self and installed them succefull

Try Vuescan from www.hamrick.com, works on my iMac with OX 10.5

needle3000:  The Epson "Perfection" 1240U Scanner won't work with Mac OS X 10.4.11 possibly due to the program it is being run from. Like you, I had the same problem: it wasn't being recognized. Epson's drivers installed and ran correctly. Scanner even appeared under Bus in USB Device Tree in System Profile. Finally, I discovered that the Scanner runs if opened directly from EPSON Scan.app under Applications. The problem, in my case, was my ancient version of Photoshop (5.5.) from which I was running it.
 Hope that helps!

http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&tabact=DownloadDetailTabAct&fcategoryid=351&modelid=6623 on the downloads and drivers tab ==
select an OS (Operating System)

and start downloading