I had a hard time finding the right drivers for a Canon PIXMA iX 4000 printer for Windows 7. The drivers available on the european website are old and missing 64-bit support. After googling around, I found the drivers on the asian website. Because I lost quite some time searching for them, I thought I just post the direct links here:

• For 32-bit: http://support-sg.canon-asia.com/contents/SG/EN/0900409101.html
• For 64-bit: http://support-sg.canon-asia.com/contents/SG/EN/0900468001.html